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mcd10004 rev. 1.3, 19-oct-09 page 1 of 70 www.power-one.com asq24 dc-dc converter series data sheet 18 to 36 vdc input; 1.0 to 12 vdc output applications ? telecommunications ? data communications ? wireless communications ? servers, workstations benefits ? high efficiency ? no heat sink required ? can replace two single output quarter-bricks features ? rohs lead-solder-exemption compliant ? delivers up to 15a (50 w) ? operates from ? 55 ? c to 85 ? c ambient ? survives 1000 g mechanical shock, mil-std-883e ? industry-standard quarter-brick pinout ? available in through-hole and surface-mount packages ? outputs available in 12.0, 8.0, 6.0, 5.0, 3.3, 2.5, 2.0, 1.8, 1.5, 1.2, and 1.0 v ? low profile: 0.274? (6.96 mm) ? low weight: 0.53 oz [15 g] typical ? extremely small footprint: 0.896" x 2.30" (2.06 in 2 ) ? on-board input differential lc-filter ? extremely low output and input ripple ? start-up into pre-biased load ? no minimum load required ? 2000 vdc i/o isolation ? meets basic insulation requirements of en60950 ? fixed-frequency operation ? fully protected ? remote output sense ? positive or negative logic on/off option ? output voltage trim range: +10%/-20% (except 1.2 and 1.0v outputs with a trim range of 10%) with industry-standard trim equations ? high reliability: mtbf 3.4 million hours, calculated per telcordia tr-332, method i case 1 ? ul60950 recognized in us and canada and demko certified per iec/en60950 ? meets conducted emissions requirements per fcc class b and en55022 class b when used with an external filter ? all materials meet ul94, v-0 flammability rating description the asq24 eighth-brick dc-dc converters are ideally suited for aerospace applications where high reliability, low profile, and low weight are critical. they are designed fo r reliable operation in harsh thermal and mechanical environments. in high-ambient temperature applications, the asq24 series converters provide thermal performance that exceeds competing dc-dc converters that have a hi gher nominal rating and much larger package size. this performance is accomplished through the use of patented/patent-pending circui ts, packaging, and processing techniques to achieve ultra-high efficiency, excellent t hermal management, and a low-body profile. coupled with the use of 100% automation for assembly, this results in a product with extremely high quality and reliability. available in through-hole and surface-mount packages, the asq24 series converters are also ideal for environments with little or no airflow. contact power-o ne for more information on using these converters in conduction cooled applications. operating from an 18 to 36 vdc input, the asq24 series converters provide any standard output voltage from 12 vdc down to 1.0 vdc. outputs can be trimmed fr om ?20% to +10% of the nominal output voltage ( 10% for output voltages 1.2 vdc and 1.0 vdc), thus providing out standing design flexibility.
mcd10004 rev. 1.3, 19-oct-09 page 2 of 70 www.power-one.com asq24 dc-dc converter series data sheet 18 to 36 vdc input; 1.0 to 12 vdc output electrical specifications (common to all versions) conditions: t a = 25 oc, airflow = 300 lfm (1.5 m/s), vin = 24 vdc, all output voltages, unle ss otherwise specified. parameter notes min typ max units absolute maximum ratings input voltage continuous 0 40 vdc operating ambient temperature -55 85 c storage temperature -55 125 c input characteristics operating input voltage range 18 24 36 vdc input under voltage lockout non-latching turn-on threshold 16 17 17.5 vdc turn-off threshold 15 16 16.5 vdc isolation characteristics i/o isolation 2000 vdc isolation capacitance: 1.0 - 3.3v 160 pf 5.0 - 6.0v 260 pf 8.0v, 12v 230 pf isolation resistance 10 m ? feature characteristics switching frequency 415 khz output voltage trim range 1 industry-std. equations (1.5 - 12v) -20 +10 % industry-std. equations (1.0 - 1.2v) -10 +10 % remote sense compensation 1 percent of v out ( nom ) +10 % output over-voltage protection non-latching (1.5 - 12v) 117 125 140 % non-latching (1.0 - 1.2v) 124 132 140 % auto-restart period applies to all protection features 100 ms turn-on time 4 ms on/off control (positive logic) converter off -20 0.8 vdc converter on 2.4 20 vdc on/off control (negative logic) converter off 2.4 20 vdc converter on -20 0.8 vdc additional notes: 1. vout can be increased up to 10% via the sense leads or up to 10% via the trim function, however total output voltage trim fr om all sources should not exceed 10% of v out ( nom ), in order to insure specified operation of over-voltage protection circuitry. see ?out put voltage adjust/trim? for detailed information.
mcd10004 rev. 1.3, 19-oct-09 page 3 of 70 www.power-one.com asq24 dc-dc converter series data sheet 18 to 36 vdc input; 1.0 to 12 vdc output operation input and output impedance these power converters have been designed to be stable with no external capacitors when used in low inductance in- put and output circuits. however, in many applications , the inductance associated with the distribution from the pow er source to the input of the converter can affect the stabilit y of the converter. the addi- tion of a 100 f electrolytic capacitor with an esr < 1 ? across the input helps ensure st ability of the converter. in many applications, the user has to use decoupling capaci- tance at the load. the power converter will exhibit stable op- eration with external load capacitance up to 1000 f on 12 v, 2,200 f on 8.0 v, 10,000 f on 5.0 v ? 6.0 v, and 15,000 f on 3.3 v ? 1.0 v outputs. on/off (pin 2) the on/off pin is used to turn the power converter on or off remotely via a system signal. there are two remote con- trol options available, positive logic and negative logic and both are referenced to vin(-). typical connections are shown in fig. a. rload vin control input vin (+) vin (-) on/off vout (+) vout (-) trim sense (+) sense (-) (top view) converter semi q tm family fig. a: circuit configuration for on/off function. the positive logic version turns on when the on/off pin is at logic high and turns off when at logic low. the converter is on when the on/off pin is left open . the negative logic version turns on when the pin is at logic low and turns off when the pin is at logic high. the on/off pin can be hard wired directly to vin(-) to enable automatic power up of the converter without the need of an external control signal. on/off pin is internally pulled-up to 5 v through a resistor. a mechanical switch, open collector transistor, or fet can be used to drive the input of the on/off pin. the device must be capable of sinking up to 0.2 ma at a low level volt- age of ? 0.8 v. an external voltage source ( 20 v maximum) may be connected directly to the on/off input, in which case it must be capable of sourcing or sinking up to 1 ma depending on the signal polarity. see the start-up informa- tion section for system timing waveforms associated with use of the on/off pin. remote sense (pins 5 and 7) the remote sense feature of the converter compensates for voltage drops occurring between the output pins of the con- verter and the load. the sense(-) (pin 5) and sense(+) (pin 7) pins should be connecte d at the load or at the point where regulation is required (see fig. b). 100 10 rw rw rload vin vin (+) vin (-) on/off vout (+) vout (-) trim sense (+) sense (-) (top view) converter semi q tm family fig. b: remote sense circuit configuration. if remote sensing is not required, the sense(-) pin must be connected to the vout(-) pin (pin 4), and the sense(+) pin must be connected to the vout(+) pin (pin 8) to ensure the converter will regulate at t he specified output voltage. if these connections are not made, the converter will deliver an output voltage that is slightly higher than the specified value. because the sense leads carry minimal current, large traces on the end-user board are not required. however, sense traces should be located close to a ground plane to minimize system noise and insure optimum performance. when wiring discretely, twisted pair wires should be used to connect the sense lines to the load to reduce susceptibility to noise. the converter?s output overvoltage protection (ovp) senses the voltage across vout(+) and vout(-), and not across the sense lines, so the resistance (and resulting voltage drop) between the output pins of the converter and the load should be minimized to prevent unwanted triggering of the ovp. when utilizing the remote sense feature, care must be taken not to exceed the maximum allowable output power capabil- ity of the converter, equal to the product of the nominal out- put voltage and the allowable ou tput current for the given conditions. when using remote sense, the output voltage at the con- verter can be increased by as much as 10% above the nominal rating in order to maintain the required voltage across the load. therefore, the designer must, if necessary,
mcd10004 rev. 1.3, 19-oct-09 page 4 of 70 www.power-one.com asq24 dc-dc converter series data sheet 18 to 36 vdc input; 1.0 to 12 vdc output decrease the maximum current (originally obtained from the derating curves) by the same percentage to ensure the con- verter?s actual output power remains at or below the maxi- mum allowable output power. output voltage adjust /trim (pin 6) the converter?s output voltage can be adjusted up 10% or down 20% for vout 1.5 v, and 10% for vout = 1.2 v and 1.0 v, relative to the rated output voltage by the addition of an externally connected resistor. for output voltages 3.3 v, trim up to 10% is guaranteed only at vin 20 v, and it is marginal (8% to 10%) at vin = 18 v depending on load cur- rent. the trim pin should be left open if trimming is not being used. to minimize noise pickup, a 0.1 f capacitor is con- nected internally between the trim and sense(-) pins. to increase the output voltage, refer to fig. c. a trim resis- tor, r t-incr , should be connected between the trim (pin 6) and sense(+) (pin 7), with a value of: 10.22 1.225 626 )v 5.11(100 r nom o incr t ? ? ? ? ? ? [k ? ] (1.5 ?12v) 485 r incr t ? ? [k ? ] (1.2v) 2 323 r incr t ? ? ? [k ? ] (1.0v) where, ? ? incr t r required value of trim-up resistor k ? ] ? ? nom o v nominal value of output voltage [v] 100 x v ) v (v nom - o nom - o req - o ? ? [%] ? ? req o v desired (trimmed) output voltage [v]. when trimming up, care must be taken not to exceed the converter?s maximum allowable output power. see previous section for a complete discussion of this requirement. rload vin vin (+) vin (-) on/off vout (+) vout (-) trim sense (+) sense (-) r t-incr (top view) converter semi q tm family fig. c: configuration for incr easing output voltage . to decrease the output voltage (fig. d), a trim resistor, r t- decr , should be connected between the trim (pin 6) and sense(-) (pin 5), with a value of: 10.22 | | 511 r decr t ? ? ? [k ? ] (1.0 ? 12v) where, ? ? decr t r required value of trim-down resistor [k ? ] and converter semi q tm family fig. d: configuration for decr easing output voltage. trimming/sensing beyond 110% of the rated output voltage is not an acceptable design practice, as this condition could cause unwanted triggering of the output overvoltage protec- tion (ovp) circuit. the designer should ensure that the dif- ference between the voltages ac ross the converter?s output pins and its sense pins does not exceed 10% of v out ( nom ) , or: x nom - o sense sense out out 10% v )] ( v ) ( [v )] ( v ) ( [v ? ? ? ? ? ? ? ? [v] this equation is applicable for any condition of output sens- ing and/or output trim.
mcd10004 rev. 1.3, 19-oct-09 page 5 of 70 www.power-one.com asq24 dc-dc converter series data sheet 18 to 36 vdc input; 1.0 to 12 vdc output protection features input undervoltage lockout input undervoltage lockout is standard with this converter. the converter will shut down when the input voltage drops below a pre-determined voltage. the input voltage must be at least 17.5v for the converter to turn on. once the converter has been turned on, it will shut off when the input voltage drops below 15v. this feature is beneficial in preventing deep discharging of batteries used in telecom applications. output overcurrent protection (ocp) the converter is protected against overcurrent or short cir- cuit conditions. upon sensing an overcurrent condition, the converter will switch to cons tant current operation and thereby begin to reduce output voltage. when the output voltage drops below 50% of the nominal value of output volt- age, the converter will shut down. once the converter ha s shut down, it will attempt to restart nominally every 100 ms with a typical 1-2% duty cycle. the attempted restart will continue indefinitely until the overload or short circuit conditions are removed or the output voltage rises above 50% of its nominal value. output overvoltage protection (ovp) the converter will shut down if the output voltage across vout(+) (pin 8) and vout(-) (pin 4) exceeds the threshold of the ovp circuitry. the ovp circuitry contains its own refer- ence, independent of the output voltage regulation loop. once the converter ha s shut down, it will attempt to restart every 100 ms until the ovp condition is removed. overtemperature protection (otp) the converter will shut down under an overte mperature con- dition to protect itself from overheating caused by operation outside the thermal derating curves, or operation in abnor- mal conditions such as system fan failure. after the con- verter has cooled to a safe operating temperature, it will automatically restart. safety requirements the converters meet north american and international safety regulatory requirements per ul60950 and en60950. basic insulation is provided between input and output. to comply with safety agencies requirements, an input line fuse must be used external to the converter. the table below provides the recommended fuse rating for use with this fam- ily of products. output voltage fuse rating 3.3v 8 a 12v - 5.0v , 2.5v 6 a 2.0v - 1.0v 4 a if one input fuse is used for a group of modules, the maxi- mum fuse rating should not exceed 15-a (asq modules are ul approved with up to a 15-a fuse). electromagnetic compatibility (emc) emc requirements must be met at the end-product system level, as no specific standards dedicated to emc character- istics of board mounted component dc-dc converters exist. however, power-one tests its converters to several system level standards, primary of which is the more stringent en55022, information technology equipment - radio distur- bance characteristics - limits and methods of measurement. with the addition of a simple external filter (see application notes), all versions of the asq24 series of converters pass the requirements of class b conducted emissions per en55022 and fcc, and meet at a minimum, class a radi- ated emissions per en 55022 and class b per fcc title 47cfr, part 15-j. please contact di/dt applications engi- neering for details of this testing. characterization general information the converter has been characterized for many operational aspects, to include thermal derating (maximum load current as a function of ambient temperature and airflow) for vertical and horizontal mounting, effici ency, start-up and shutdown parameters, output ripple and no ise, transient response to load step-change, overload and short circuit. the figures are numbered as fig. x.y, where x indicates the different output voltages, and y is associated with a specific plot (y = 1 for the vertical thermal derating, ?). for example, fig. x.1 will refer to the vertical thermal derating for all the output voltages in general. the following pages contain specific plots or waveforms as- sociated with the converter. a dditional comments for specific data are provided below. test conditions all data presented were taken with the converter soldered to a test board, specifically a 0. 060? thick printed wiring board (pwb) with four layers. the top and bottom layers were not metalized. the two inner layers, comprising two-ounce cop- per, were used to provide traces for connectivity to the con- verter.
mcd10004 rev. 1.3, 19-oct-09 page 6 of 70 www.power-one.com asq24 dc-dc converter series data sheet 18 to 36 vdc input; 1.0 to 12 vdc output the lack of metalization on the outer layers as well as the limited thermal connection ensured that heat transfer from the converter to the pwb was minimized. this provides a worst-case but consistent scenario for thermal derating pur- poses. all measurements requiring airflow were made in vertical and horizontal wind tunnel facilitie s using infrared (ir) ther- mography and thermocouples for thermometry. ensuring components on the converter do not exceed their ratings is important to maintaining high reliability. if one an- ticipates operating the converter at or close to the maximum loads specified in the derating curves, it is prudent to check actual operating temperatures in the application. thermo- graphic imaging is preferable; if this capability is not avail- able, then thermocouples may be used. power-one recom- mends the use of awg #40 gauge thermocouples to ensure measurement accuracy. careful routing of the thermocouple leads will further minimize meas urement error. refer to fig- ure h for optimum measuring thermocouple location. thermal derating load current vs. ambient temperature and airflow rates are given in fig. x.1 for through-hole version. ambient tempera- ture was varied between 25c and 85c, with airflow rates from 30 to 500 lfm (0.15 to 2.5m/s), and vertical and hori- zontal converter mounting. for each set of conditions, the maximum load current was defined as the lowest of: (i) the output current at which any fet junction temperature does not exceed a maximum specified temperature (120 c) as indicated by the thermographic image, or (ii) the nominal rating of the converter (4 a on 12 v, 5.3 a on 8.0 v, 8 a on 6.0 v, 10 a on 5.0 v, and 15 a on 3.3 ? 1.0v). during normal operation, derati ng curves with maximum fet temperature less than or equal to 120 c should not be ex- ceeded. temperature on the pcb at the thermocouple loca- tion shown in fig. h should not exceed 118 c in order to operate inside the derating curves. fig. h: location of the thermocouple for thermal testing. efficiency fig. x.5 shows the efficiency vs . load current plot for ambient temperature of 25 oc, airflow rate of 300 lfm (1.5 m/s) with vertical mounting and input voltages of 18 v, 24 v and 36 v. also, a plot of efficiency vs. load current, as a function of ambient temperature with vin = 24 v, airflow rate of 200 lfm (1 m/s) with vertical mounting is shown in fig. x.6. power dissipation fig. x.7 shows the power dissi pation vs. load current plot for ta = 25 oc, airflow rate of 300 lfm (1.5 m/s) with vertical mounting and input voltages of 18 v, 24 v and 36 v. also, a plot of power dissipation vs. load current, as a function of ambient temperature with vin = 24 v, airflow rate of 200 lfm (1 m/s) with vertical mounting is shown in fig. x.8. start-up output voltage waveforms, during the turn-on transient using the on/off pin for full rated load currents (resistive load) are shown without and with external load capacitance in fig. x.9 and fig. x.10, respectively. ripple and noise fig. x.13 shows the output voltage ripple waveform, meas- ured at full rated load current with a 10 f tantalum and 1 f ceramic capacitor across the output. note that all output voltage waveforms are measured across a 1 ? f ceramic ca- pacitor. the input reflected ripple current waveforms are obtained using the test setup shown in fig x.14. the corresponding waveforms are shown in fig. x.15 and fig. x.16.
mcd10004 rev. 1.3, 19-oct-09 page 7 of 70 www.power-one.com asq24 dc-dc converter series data sheet 18 to 36 vdc input; 1.0 to 12 vdc output start-up information (using negative on/off) scenario #1: initial start-up from bulk supply on/off function enabled, converte r started via application of v in . see figure e. time comments t 0 on/off pin is on; system front end power is toggled on, v in to converter begins to rise. t 1 v in crosses under-voltage lockout protection circuit threshold; converter enabled. t 2 converter begins to respond to turn-on command (con- verter turn-on delay). t 3 converter v out reaches 100% of nominal value. for this example, the total converter start-up time (t 3 - t 1 ) is typically 4 ms. scenario #2: initial start-up using on/off pin with v in previously powered, converter started via on/off pin. see figure f. time comments t 0 v input at nominal value. t 1 arbitrary time when on/off pin is enabled (converter enabled). t 2 end of converter turn-on delay. t 3 converter v out reaches 100% of nominal value. for this example, the total converter start-up time (t 3 - t 1 ) is typically 4 ms. scenario #3: turn-off and restart using on/off pin with v in previously powered, converter is disabled and then en- abled via on/off pin. see figure g. time comments t 0 v in and v out are at nominal values; on/off pin on. t 1 on/off pin arbitrarily disabled; converter output falls to zero; turn-on inhibit delay period (100 ms typical) is initiated, and on/off pin action is internally inhibited. t 2 on/off pin is externally re-enabled. if (t 2 - t 1 ) 100 ms , external action of on/off pin is locked out by start-up inhibit timer. if (t 2 - t 1 ) > 100 ms , on/off pin action is internally enabled. t 3 turn-on inhibit delay period ends. if on/off pin is on, converter begins turn-on; if off, converter awaits on/off pin on signal; see figure f. t 4 end of converter turn-on delay. t 5 converter v out reaches 100% of nominal value. for the condition, (t 2 - t 1 ) 100 ms , the total converter start-up time (t 5 - t 2 ) is typically 104 ms. for (t 2 - t 1 ) > 100 ms , start-up will be typically 4 ms after release of on/off pin. fig. e: start-up scenario #1 on/off state v out t 0 t 1 t 2 t 3 on off v in t fig. f: start-up scenario #2. on/off state off on v out t 0 t 2 t 1 t 5 v in t t 4 t 3 100 ms fig. g: start-up scenario #3. v in on/off state v out t t 0 t 1 t 2 t 3 on off
mcd10004 rev. 1.3, 19-oct-09 page 8 of 70 www.power-one.com asq24 dc-dc converter series data sheet 18 to 36 vdc input; 1.0 to 12 vdc output electrical specifications: asq24t/s04120 (12 volts out) conditions: t a =25oc, airflow=300 lfm (1.5 m/s), vin=24vdc, vout=12 vdc unless otherwise specified. parameter notes min typ max units input characteristics maximum input current 4 adc, 12 vdc out @ 18 vdc in 3.1 adc input stand-by current vin = 24v, converter disabled 3 madc input no load current (0 load on the output) vin = 24v, converter enabled 100 madc input reflected-ripple current 25mhz bandwidth 6 ma pk-pk input voltage ripple rejection 120hz tbd db output characteristics output voltage set point (no load) 11.880 12.000 12.120 vdc output regulation over line 4 10 mv over load 4 10 mv output voltage range over line, load and temperature 2 11.820 12.180 vdc output ripple and noise - 25mhz bandwidth full load + 10 f tantalum + 1 f ceramic 90 120 mv pk-pk external load capacitance plus full load (resistive) 1000 f output current range 0 4 adc current limit inception non-latching 5 5.5 adc peak short-circuit current non-latching. short=10m ? . 7.5 10 a rms short-circuit current non-latching 1 arms dynamic response load change 25% of iout max, di/dt = 0.1 a/ s co = 1 f ceramic 150 mv di/dt = 5 a/ s 1 f ceramic 200 mv setting time to 1% 20 s efficiency 100% load 87 % 50% load 87 % additional notes: 2. -40oc to 85oc
mcd10004 rev. 1.3, 19-oct-09 page 9 of 70 www.power-one.com asq24 dc-dc converter series data sheet 18 to 36 vdc input; 1.0 to 12 vdc output asq24t/s04120 (12 volts out) ambient temperature [c] 20 30 40 50 60 70 80 90 load current [adc] 0 1 2 3 4 5 500 lfm (2.5 m/s) 400 lfm (2.0 m/s) 300 lfm (1.5 m/s) 200 lfm (1.0 m/s) 100 lfm (0.5 m/s) 30 lfm (0.15 m/s) fig. 12v.1: available load current vs. ambient air temperature and airflow rates for asq24t04120 converter with b height pins mounted vertically with vin = 24v, air flowing from pin 3 to pin 1 and maximum fet temperature ? 120 ? c. ambient temperature [c] 20 30 40 50 60 70 80 90 load current [adc] 0 1 2 3 4 5 500 lfm (2.5 m/s) 400 lfm (2.0 m/s) 300 lfm (1.5 m/s) 200 lfm (1.0 m/s) 100 lfm (0.5 m/s) 30 lfm (0.15 m/s) fig. 12v.3: available load current vs. ambient temperature and airflow rates for asq24s04120 converter mounted vertically with vin = 24v, air flowing from pin 3 to pin 1 and maximum fet temperature ? 120 ? c. ambient temperature [c] 20 30 40 50 60 70 80 90 load current [adc] 0 1 2 3 4 5 500 lfm (2.5 m/s) 400 lfm (2.0 m/s) 300 lfm (1.5 m/s) 200 lfm (1.0 m/s) 100 lfm (0.5 m/s) 30 lfm (0.15 m/s) fig. 12v.2: available load current vs. ambient air temperature and airflow rates for asq24t04120 converter with b height pins mounted horizontally with vin = 24v, air flowing from pin 3 to pin 1 and maximum fet temperature ? 120 ? c. ambient temperature [c] 20 30 40 50 60 70 80 90 load current [adc] 0 1 2 3 4 5 500 lfm (2.5 m/s) 400 lfm (2.0 m/s) 300 lfm (1.5 m/s) 200 lfm (1.0 m/s) 100 lfm (0.5 m/s) 30 lfm (0.15 m/s) fig. 12v.4: available load current vs. ambient temperature and airflow rates for asq24s04120 converter mounted horizontally with vin = 24v, air flowing from pin 3 to pin 1 and maximum fet temperature ? 120 ? c.
mcd10004 rev. 1.3, 19-oct-09 page 10 of 70 www.power-one.com asq24 dc-dc converter series data sheet 18 to 36 vdc input; 1.0 to 12 vdc output asq24t/s04120 (12 volts out) load current [adc] 012345 efficiency 0.65 0.70 0.75 0.80 0.85 0.90 0.95 36 v 24 v 18 v fig. 12v.5: efficiency vs. load current and input voltage for asq24t/s04120 converter mounted vertically with air flowing from pin 3 to pin 1 at a rate of 300 lfm (1.5 m/s) and ta = 25 ? c. load current [adc] 012345 p ower di ss i pa ti on [w] 0.00 2.00 4.00 6.00 8.00 10.00 36 v 24 v 18 v fig. 12v.7: power dissipation vs. load current and input volt- age for asq24t/s04120 converter mounted vertically with air flowing from pin 3 to pin 1 at a rate of 300 lfm (1.5 m/s) and ta = 25 ? c. load current [adc] 012345 efficiency 0.65 0.70 0.75 0.80 0.85 0.90 0.95 70 c 55 c 40 c fig. 12v.6: efficiency vs. load current and ambient tempera- ture for asq24t/s04120 converter mounted vertically with vin = 24v and air flowing from pin 3 to pin 1 at a rate of 200 lfm (1.0 m/s). load current [adc] 012345 p ower di ss i pa ti on [w] 0.00 2.00 4.00 6.00 8.00 10.00 70 c 55 c 40 c fig. 12v.8: power dissipation vs. load current and ambient temperature for asq24t/s04120 converter mounted vertically with vin = 24v and air flowing from pin 3 to pin 1 at a rate of 200 lfm (1.0 m/s).
mcd10004 rev. 1.3, 19-oct-09 page 11 of 70 www.power-one.com asq24 dc-dc converter series data sheet 18 to 36 vdc input; 1.0 to 12 vdc output asq24t/s04120 (12 volts out) fig. 12v.9: turn-on transient at full rated load current (resis- tive) with no output capacitor at vin = 24v, triggered via on/off pin. top trace: on/off signal (5 v/div.). bottom trace: output voltage (5 v/div.). time scale: 1 ms/div. fig. 12v.11: output voltage response to load current step- change (1a ? 2a ? 1a) at vin = 24v. top trace: output voltage (200 mv/div.). bottom trace: load current (1 a/div.). current slew rate: 0.1 a/ ? s. co = 1 ? f ceramic. time scale: 0.5 ms/div. fig. 12v.10: turn-on transient at full rated load current (resis- tive) plus 1,000 ? f at vin = 24v, triggered via on/off pin. top trace: on/off signal (5 v/div.). bottom trace: output voltage (5 v/div.). time scale: 2 ms/div. fig. 12v.12: output voltage response to load current step- change (1a ? 2a ? 1a) at vin = 24v. top trace: output voltage (200 mv/div.). bottom trace: load current (1 a/div.). current slew rate: 5 a/ ? s. co = 1 ? f ceramic. time scale: 0.5 ms/div.
mcd10004 rev. 1.3, 19-oct-09 page 12 of 70 www.power-one.com asq24 dc-dc converter series data sheet 18 to 36 vdc input; 1.0 to 12 vdc output asq24t/s04120 (12 volts out) fig. 12v.13: output voltage ripple (50 mv/div.) at full rated load current into a resistive load with co = 10 ? f tantalum + 1uf ceramic and vin = 24v. time scale: 1 ? s/div. fig. 12v.15: input reflected ripple current, i c (100 ma/div.), measured at input terminals at full rated load current and vin = 24v. refer to fig. 12v.14 for test setup. time scale: 1 ? s/div. vout v source i s i c 1 ? f ceramic capacitor 10 ? h source inductance semi q tm family dc/dc converter 33 ? f esr <1 electrolytic capacitor fig. 12v.14: test setup for measuring input reflected ripple currents, i c and i s . fig. 12v.16: input reflected ripple current, i s (10 ma/div.), measured through 10 ? h at the source at full rated load current and vin = 24v. refer to fig. 12v.14 for test setup. time scale: 1 ? s/div.
mcd10004 rev. 1.3, 19-oct-09 page 13 of 70 www.power-one.com asq24 dc-dc converter series data sheet 18 to 36 vdc input; 1.0 to 12 vdc output asq24t/s04120 (12 volts out) 14 6 15 iout [adc] vout [vdc] 0 0 10 5 23 5 fig. 12v.17: output voltage vs. load current showing current limit point and converter shutdown point. input voltage has al- most no effect on current limit characteristic. fig. 12v.18: load current (top trace, 5 a/div., 20 ms/div.) into a 10 m ? short circuit during restart, at vin = 24v. bottom trace (5 a/div., 1 ms/div.) is an expansion of the on-time portion of the top trace.
mcd10004 rev. 1.3, 19-oct-09 page 14 of 70 www.power-one.com asq24 dc-dc converter series data sheet 18 to 36 vdc input; 1.0 to 12 vdc output electrical specifications: asq24t/s05080 (8.0 volts out) conditions: t a =25oc, airflow=300 lfm (1.5 m/s), vin=24 vdc, vout=8.0 vdc unless otherwise specified. parameter notes min typ max units input characteristics maximum input current 5.3 adc, 8.0 vdc out @ 18 vdc in 2.8 adc input stand-by current vin = 24 v, converter disabled 2.6 madc input no load current (0 load on the output) vin = 24 v, converter enabled 68 madc input reflected-ripple current 25mhz bandwidth 6 ma pk-pk input voltage ripple rejection 120hz tbd db output characteristics output voltage set point (no load) 7.920 8.000 8.080 vdc output regulation over line 4 10 mv over load 4 10 mv output voltage range over line, load and temperature 2 7.880 8.120 vdc output ripple and noise - 25mhz bandwidth full load + 10 f tantalum + 1 f ceramic 70 100 mv pk-pk external load capacitance plus full load (resistive) 2200 f output current range 0 5.3 adc current limit inception non-latching 6.25 6.75 adc peak short-circuit current non-latching. short=10m ? . 10 12 a rms short-circuit current non-latching 1 arms dynamic response load change 25% of iout max, di/dt = 0.1 a/ s co = 1 f ceramic 160 mv di/dt = 5 a/ s co = 94 f tant. + 1 f ceramic 160 mv setting time to 1% 400 s efficiency 100% load 85.5 % 50% load 87 % additional notes: 2. -40oc to 85oc ambient temperature [c] 20 30 40 50 60 70 80 90 load current [adc] 0 1 2 3 4 5 6 500 lfm (2.5 m/s) 400 lfm (2.0 m/s) 300 lfm (1.5 m/s) 200 lfm (1.0 m/s) 100 lfm (0.5 m/s) 30 lfm (0.15 m/s) fig. 8.0v.1: available load current vs. ambient air temperature and airflow rates for asq24t05080 converter with d height pins mounted vertically with vin = 24 v, air flowing from pin 3 to pin 1 and maximum fet temperature ? 120 ? c. load current [adc] 0123456 efficiency 0.65 0.70 0.75 0.80 0.85 0.90 0.95 36 v 24 v 18 v fig. 8.0v.2: efficiency vs. load current and input voltage for asq24t/s05080 converter mounted vertically with air flowing from pin 3 to pin 1 at a rate of 300 lfm (1.5 m/s) and ta = 25 ? c.
mcd10004 rev. 1.3, 19-oct-09 page 15 of 70 www.power-one.com asq24 dc-dc converter series data sheet 18 to 36 vdc input; 1.0 to 12 vdc output electrical specifications: asq24t/s08060 (6.0 volts out) conditions: t a =25oc, airflow=300 lfm (1.5 m/s), vin=24vdc, vout=6.0 vdc unless otherwise specified. parameter notes min typ max units input characteristics maximum input current 8 adc, 6.0 vdc out @ 18 vdc in 3.1 adc input stand-by current vin = 24v, converter disabled 2.6 madc input no load current (0 load on the output) vin = 24v, converter enabled 88 madc input reflected-ripple current 25mhz bandwidth 6 ma pk-pk input voltage ripple rejection 120hz tbd db output characteristics output voltage set point (no load) 5.940 6.000 6.060 vdc output regulation over line 2 5 mv over load 2 5 mv output voltage range over line, load and temperature 2 5.910 6.090 vdc output ripple and noise - 25mhz bandwidth full load + 10 f tantalum + 1 f ceramic 45 60 mv pk-pk external load capacitance plus full load (resistive) 10,000 f output current range 0 8 adc current limit inception non-latching 10 11.5 adc peak short-circuit current non-latching. short=10m ? . 15 25 a rms short-circuit current non-latching 2.5 arms dynamic response load change 25% of iout max, di/dt = 0.1 a/ s co = 1 f ceramic 100 mv di/dt = 5 a/ s co = 450 f tant. + 1 f ceramic 80 mv setting time to 1% 100 s efficiency 100% load 89 % 50% load 89 % additional notes: 2. -40oc to 85oc
mcd10004 rev. 1.3, 19-oct-09 page 16 of 70 www.power-one.com asq24 dc-dc converter series data sheet 18 to 36 vdc input; 1.0 to 12 vdc output asq24t/s08060 (6.0 volts out) ambient temperature [c] 20 30 40 50 60 70 80 90 load current [adc] 0 2 4 6 8 10 500 lfm (2.5 m/s) 400 lfm (2.0 m/s) 300 lfm (1.5 m/s) 200 lfm (1.0 m/s) 100 lfm (0.5 m/s) 30 lfm (0.15 m/s) fig. 6.0v.1: available load current vs. ambient air temperature and airflow rates for asq24t08060 converter with b height pins mounted vertically with vin = 24v, air flowing from pin 3 to pin 1 and maximum fet temperature ? 120 ? c. ambient temperature [c] 20 30 40 50 60 70 80 90 load current [adc] 0 2 4 6 8 10 500 lfm (2.5 m/s) 400 lfm (2.0 m/s) 300 lfm (1.5 m/s) 200 lfm (1.0 m/s) 100 lfm (0.5 m/s) 30 lfm (0.15 m/s) fig. 6.0v.3: available load current vs. ambient temperature and airflow rates for asq24s08060 converter mounted verti- cally with vin = 24v, air flowing from pin 3 to pin 1 and maxi- mum fet temperature ? 120 ? c. ambient temperature [c] 20 30 40 50 60 70 80 90 load current [adc] 0 2 4 6 8 10 500 lfm (2.5 m/s) 400 lfm (2.0 m/s) 300 lfm (1.5 m/s) 200 lfm (1.0 m/s) 100 lfm (0.5 m/s) 30 lfm (0.15 m/s) fig. 6.0v.2: available load current vs. ambient air temperature and airflow rates for asq24t08060 converter with b height pins mounted horizontally with vin = 24v, air flowing from pin 3 to pin 1 and maximum fet temperature ? 120 ? c. ambient temperature [c] 20 30 40 50 60 70 80 90 load current [adc] 0 2 4 6 8 10 500 lfm (2.5 m/s) 400 lfm (2.0 m/s) 300 lfm (1.5 m/s) 200 lfm (1.0 m/s) 100 lfm (0.5 m/s) 30 lfm (0.15 m/s) fig. 6.0v.4: available load current vs. ambient temperature and airflow rates for asq24s08060 converter mounted hori- zontally with vin = 24v, air flowing from pin 3 to pin 1 and maximum fet temperature ? 120 ? c.
mcd10004 rev. 1.3, 19-oct-09 page 17 of 70 www.power-one.com asq24 dc-dc converter series data sheet 18 to 36 vdc input; 1.0 to 12 vdc output asq24t/s08060 (6.0 volts out) load current [adc] 0246810 efficiency 0.65 0.70 0.75 0.80 0.85 0.90 0.95 36 v 24 v 18 v fig. 6.0v.5: efficiency vs. load current and input voltage for asq24t/s08060 converter mounted vertically with air flowing from pin 3 to pin 1 at a rate of 300 lfm (1.5 m/s) and ta = 25 ? c. load current [adc] 0246810 p ower di ss i pa ti on [w] 0.00 2.00 4.00 6.00 8.00 10.00 72 v 48 v 36 v fig. 6.0v.7: power dissipation vs. load current and ambient temperature for asq24t/s08060 converter mounted vertically with air flowing from pin 3 to pin 1 at a rate of 300 lfm (1.5 m/s) and ta = 25 ? c. load current [adc] 0246810 efficiency 0.65 0.70 0.75 0.80 0.85 0.90 0.95 70 c 55 c 40 c fig. 6.0v.6: efficiency vs. load current and ambient tempera- ture for asq24t/s08060 converter mounted vertically with vin = 24v and air flowing from pin 3 to pin 1 at a rate of 200 lfm (1.0 m/s). load current [adc] 0246810 p ower di ss i pa ti on [w] 0.00 2.00 4.00 6.00 8.00 10.00 70 c 55 c 40 c fig. 6.0v.8: power dissipation vs. load current and ambient temperature for asq24t/s08060 converter mounted vertically with vin = 24v and air flowing from pin 3 to pin 1 at a rate of 200 lfm (1.0 m/s).
mcd10004 rev. 1.3, 19-oct-09 page 18 of 70 www.power-one.com asq24 dc-dc converter series data sheet 18 to 36 vdc input; 1.0 to 12 vdc output asq24t/s08060 (6.0 volts out) fig. 6.0v.9: turn-on transient at full rated load current (resis- tive) with no output capacitor at vin = 24v, triggered via on/off pin. top trace: on/off signal (5 v/div.). bottom trace: output voltage (2 v/div.). time scale: 1 ms/div. fig. 6.0v.11: output voltage response to load current step- change (2a ? 4a ? 2a) at vin = 24v. top trace: output voltage (100mv/div.). bottom trace: load cu rrent (2a/div.). current slew rate: 0.1 a/ ? s. co = 1 ? f ceramic. time scale: 0.2 ms/div. fig. 6.0v.10: turn-on transient at full rated load current (resis- tive) plus 10,000 ? f at vin = 24v, triggered via on/off pin. top trace: on/off signal (5 v/di v.). bottom trace: output volt- age (2 v/div.). time scale: 2 ms/div. fig. 6.0v.12: output voltage response to load current step- change (2a ? 4a ? 2a) at vin = 24v. top trace: output voltage (100mv/div.). bottom trace: load cu rrent (2a/div.). current slew rate: 5 a/ ? s. co = 450 ? f tantalum + 1 ? f ceramic. time scale: 0.2 ms/div.
mcd10004 rev. 1.3, 19-oct-09 page 19 of 70 www.power-one.com asq24 dc-dc converter series data sheet 18 to 36 vdc input; 1.0 to 12 vdc output asq24t/s08060 (6.0 volts out) fig. 6.0v.13: output voltage ripple (50 mv/div.) at full rated load current into a resistive load with co = 10 ? f tantalum + 1uf ceramic and vin = 24v. time scale: 1 ? s/div. fig. 6.0v.15: input reflected ripple current, i c (100 ma/div.), measured at input terminals at full rated load current and vin = 24v. refer to fig. 6.0v.14 fo r test setup. time scale: 1 ? s/div. vout v source i s i c 1 ? f ceramic capacitor 10 ? h source inductance semi q tm family dc/dc converter 33 ? f esr <1 electrolytic capacitor fig. 6.0v.14: test setup for measuring input reflected ripple currents, i c and i s . fig. 6.0v.16: input reflected ripple current, i s (10 ma/div.), measured through 10 ? h at the source at full rated load current and vin = 24v. refer to fig. 6.0v.14 for test setup. time scale: 1 ? s/div.
mcd10004 rev. 1.3, 19-oct-09 page 20 of 70 www.power-one.com asq24 dc-dc converter series data sheet 18 to 36 vdc input; 1.0 to 12 vdc output asq24t/s08060 (6.0 volts out) 3 12 8 iout [adc] vout [vdc] 0 0 4 2 69 6 fig. 6.0v.17: output voltage vs. load current showing current limit point and converter shutdown point. input voltage has al- most no effect on current limit characteristic. fig. 6.0v.18: load current (top trace, 20 a/div., 20 ms/div.) into a 10 m ? short circuit during restart, at vin = 24v. bottom trace (20 a/div., 2 ms/div.) is an expansion of the on-time por- tion of the top trace.
mcd10004 rev. 1.3, 19-oct-09 page 21 of 70 www.power-one.com asq24 dc-dc converter series data sheet 18 to 36 vdc input; 1.0 to 12 vdc output electrical specifications: asq24t/s10050 (5.0 volts out) conditions: t a =25oc, airflow=300 lfm (1.5 m/s), vin=24vdc, vout=5.0 vdc unless otherwise specified. parameter notes min typ max units input characteristics maximum input current 10 adc, 5.0 vdc out @ 18 vdc in 3.3 adc input stand-by current vin = 24v, converter disabled 3 madc input no load current (0 load on the output) vin = 24v, converter enabled 93 madc input reflected-ripple current 25mhz bandwidth 6 ma pk-pk input voltage ripple rejection 120hz tbd db output characteristics output voltage set point (no load) 4.950 5.000 5.050 vdc output regulation over line 2 5 mv over load 2 5 mv output voltage range over line, load and temperature 2 4.925 5.075 vdc output ripple and noise - 25mhz bandwidth full load + 10 f tantalum + 1 f ceramic 45 80 mv pk-pk external load capacitance plus full load (resistive) 10,000 f output current range 0 10 adc current limit inception non-latching 12.5 14 adc peak short-circuit current non-latching. short=10m ? . 20 30 a rms short-circuit current non-latching 3 arms dynamic response load change 25% of iout max, di/dt = 0.1 a/ s co = 1 f ceramic 140 mv di/dt = 5 a/ s co = 450 f tant. + 1 f ceramic 90 mv setting time to 1% 200 s efficiency 100% load 86 % 50% load 87 % additional notes: 2. -40oc to 85oc
mcd10004 rev. 1.3, 19-oct-09 page 22 of 70 www.power-one.com asq24 dc-dc converter series data sheet 18 to 36 vdc input; 1.0 to 12 vdc output asq24t/s10050 (5.0 volts out) ambient temperature [c] 20 30 40 50 60 70 80 90 load current [adc] 0 2 4 6 8 10 12 500 lfm (2.5 m/s) 400 lfm (2.0 m/s) 300 lfm (1.5 m/s) 200 lfm (1.0 m/s) 100 lfm (0.5 m/s) 30 lfm (0.15 m/s) fig. 5.0v.1: available load current vs. ambient air temperature and airflow rates for asq24t10050 converter with b height pins mounted vertically with vin = 24v, air flowing from pin 3 to pin 1 and maximum fet temperature ? 120 ? c. ambient temperature [c] 20 30 40 50 60 70 80 90 load current [adc] 0 2 4 6 8 10 12 500 lfm (2.5 m/s) 400 lfm (2.0 m/s) 300 lfm (1.5 m/s) 200 lfm (1.0 m/s) 100 lfm (0.5 m/s) 30 lfm (0.15 m/s) fig. 5.0v.3: available load current vs. ambient temperature and airflow rates for asq24s10050 converter mounted verti- cally with vin = 24v, air flowing from pin 3 to pin 1 and maxi- mum fet temperature ? 120 ? c. ambient temperature [c] 20 30 40 50 60 70 80 90 load current [adc] 0 2 4 6 8 10 12 500 lfm (2.5 m/s) 400 lfm (2.0 m/s) 300 lfm (1.5 m/s) 200 lfm (1.0 m/s) 100 lfm (0.5 m/s) 30 lfm (0.15 m/s) fig. 5.0v.2: available load current vs. ambient air temperature and airflow rates for asq24t10050 converter with b height pins mounted horizontally with vin = 24v, air flowing from pin 3 to pin 1 and maximum fet temperature ? 120 ? c. ambient temperature [c] 20 30 40 50 60 70 80 90 load current [adc] 0 2 4 6 8 10 12 500 lfm (2.5 m/s) 400 lfm (2.0 m/s) 300 lfm (1.5 m/s) 200 lfm (1.0 m/s) 100 lfm (0.5 m/s) 30 lfm (0.15 m/s) fig. 5.0v.4: available load current vs. ambient temperature and airflow rates for asq24s10050 converter mounted hori- zontally with vin = 24v, air flowing from pin 3 to pin 1 and maximum fet temperature ? 120 ? c.
mcd10004 rev. 1.3, 19-oct-09 page 23 of 70 www.power-one.com asq24 dc-dc converter series data sheet 18 to 36 vdc input; 1.0 to 12 vdc output asq24t/s10050 (5.0 volts out) load current [adc] 024681012 efficiency 0.65 0.70 0.75 0.80 0.85 0.90 0.95 36 v 24 v 18 v fig. 5.0v.5: efficiency vs. load current and input voltage for asq24t/s10050 converter mounted vertically with air flowing from pin 3 to pin 1 at a rate of 300 lfm (1.5 m/s) and ta = 25 ? c. load current [adc] 024681012 p ower di ss i pa ti on [w] 0.00 2.00 4.00 6.00 8.00 10.00 36 v 24 v 18 v fig. 5.0v.7: power dissipation vs. load current and input volt- age for asq24t/s10050 converter mounted vertically with air flowing from pin 3 to pin 1 at a rate of 300 lfm (1.5 m/s) and ta = 25 ? c. load current [adc] 024681012 efficiency 0.65 0.70 0.75 0.80 0.85 0.90 0.95 70 c 55 c 40 c fig. 5.0v.6: efficiency vs. load current and ambient tempera- ture for asq24t/s10050 converter mounted vertically with vin = 24v and air flowing from pin 3 to pin 1 at a rate of 200 lfm (1.0 m/s). load current [adc] 024681012 p ower di ss i pa ti on [w] 0.00 2.00 4.00 6.00 8.00 10.00 70 c 55 c 40 c fig. 5.0v.8: power dissipation vs. load current and ambient temperature for asq24t/s10050 converter mounted vertically with vin = 24v and air flowing from pin 3 to pin 1 at a rate of 200 lfm (1.0 m/s).
mcd10004 rev. 1.3, 19-oct-09 page 24 of 70 www.power-one.com asq24 dc-dc converter series data sheet 18 to 36 vdc input; 1.0 to 12 vdc output asq24t/s10050 (5.0 volts out) fig. 5.0v.9: turn-on transient at full rated load current (resis- tive) with no output capacitor at vin = 24v, triggered via on/off pin. top trace: on/off signal (5 v/div.). bottom trace: output voltage (2 v/div.). time scale: 2 ms/div. fig. 5.0v.11: output voltage response to load current step- change (2.5a ? 5a ? 2.5a) at vin = 24v. top trace: output voltage (100 mv/div.). bottom trac e: load current (2 a/div.). current slew rate: 0.1 a/ ? s. co = 1 ? f ceramic. time scale: 0.2 ms/div. fig. 5.0v.10: turn-on transient at full rated load current (resis- tive) plus 10,000 ? f at vin = 24v, triggered via on/off pin. top trace: on/off signal (5 v/di v.). bottom trace: output volt- age (2 v/div.). time scale: 2 ms/div. fig. 5.0v.12: output voltage response to load current step- change (2.5a ? 5a ? 2.5a) at vin = 24v. top trace: output voltage (100 mv/div.). bottom trac e: load current (2 a/div.). current slew rate: 5 a/ ? s. co = 450 ? f tantalum + 1 ? f ce- ramic. time scale: 0.2 ms/div.
mcd10004 rev. 1.3, 19-oct-09 page 25 of 70 www.power-one.com asq24 dc-dc converter series data sheet 18 to 36 vdc input; 1.0 to 12 vdc output asq24t/s10050 (5.0 volts out) fig. 5.0v.13: output voltage ripple (20 mv/div.) at full rated load current into a resistive load with co = 10 ? f tantalum + 1uf ceramic and vin = 24v. time scale: 1 ? s/div. fig. 5.0v.15: input reflected ripple current, i c (100 ma/div.), measured at input terminals at full rated load current and vin = 24v. refer to fig. 5.0v.14 fo r test setup. time scale: 1 ? s/div. vout v source i s i c 1 ? f ceramic capacitor 10 ? h source inductance semi q tm family dc/dc converter 33 ? f esr <1 electrolytic capacitor fig. 5.0v.14: test setup for measuring input reflected ripple currents, i c and i s . fig. 5.0v.16: input reflected ripple current, i s (10 ma/div.), measured through 10 ? h at the source at full rated load current and vin = 24v. refer to fig. 5.0v.14 for test setup. time scale: 1 ? s/div.
mcd10004 rev. 1.3, 19-oct-09 page 26 of 70 www.power-one.com asq24 dc-dc converter series data sheet 18 to 36 vdc input; 1.0 to 12 vdc output asq24t/s10050 (5.0 volts out) 515 6.0 iout [adc] vout [vdc] 0 0 5.0 2.0 1.0 10 4.0 3.0 fig. 5.0v.17: output voltage vs. load current showing current limit point and converter shutdown point. input voltage has al- most no effect on current limit characteristic. fig. 5.0v.18: load current (top trace, 10 a/div., 20 ms/div.) into a 10 m ? short circuit during restart, at vin = 24v. bottom trace (10 a/div., 1 ms/div.) is an expansion of the on-time por- tion of the top trace.
mcd10004 rev. 1.3, 19-oct-09 page 27 of 70 www.power-one.com asq24 dc-dc converter series data sheet 18 to 36 vdc input; 1.0 to 12 vdc output electrical specifications: asq24t/s15033 (3.3 volts out) conditions: t a =25oc, airflow=300 lfm (1.5 m/s), vin=24vdc, vout=3.3 vdc unless otherwise specified. parameter notes min typ max units input characteristics maximum input current 15 adc, 3.3 vdc out @ 18 vdc in 3.2 adc input stand-by current vin = 24v, converter disabled 3 madc input no load current (0 load on the output) vin = 24v, converter enabled 100 madc input reflected-ripple current 25mhz bandwidth 6 ma pk-pk input voltage ripple rejection 120hz tbd db output characteristics output voltage set point (no load) 3.267 3.300 3.333 vdc output regulation over line 2 5 mv over load 2 5 mv output voltage range over line, load and temperature 2 3.250 3.350 vdc output ripple and noise - 25mhz bandwidth full load + 10 f tantalum + 1 f ceramic 30 50 mv pk-pk external load capacitance plus full load (resistive) 15,000 f output current range 0 15 adc current limit inception non-latching 18 20 adc peak short-circuit current non-latching. short=10m ? . 30 40 a rms short-circuit current non-latching 5.3 arms dynamic response load change 25% of iout max, di/dt = 0.1 a/ s co = 1 f ceramic 100 mv di/dt = 5 a/ s co = 450 f tant. + 1 f ceramic 100 mv setting time to 1% 100 s efficiency 100% load 88 % 50% load 88 % additional notes: 2. -40oc to 85oc
mcd10004 rev. 1.3, 19-oct-09 page 28 of 70 www.power-one.com asq24 dc-dc converter series data sheet 18 to 36 vdc input; 1.0 to 12 vdc output asq24t/s15033 (3.3 volts out) ambient temperature [c] 20 30 40 50 60 70 80 90 load current [adc] 0 5 10 15 20 500 lfm (2.5 m/s) 400 lfm (2.0 m/s) 300 lfm (1.5 m/s) 200 lfm (1.0 m/s) 100 lfm (0.5 m/s) 30 lfm (0.15 m/s) fig. 3.3v.1: available load current vs. ambient air temperature and airflow rates for asq24t15033 converter with b height pins mounted vertically with vin = 24v, air flowing from pin 3 to pin 1 and maximum fet temperature ? 120 ? c. ambient temperature [c] 20 30 40 50 60 70 80 90 load current [adc] 0 5 10 15 20 500 lfm (2.5 m/s) 400 lfm (2.0 m/s) 300 lfm (1.5 m/s) 200 lfm (1.0 m/s) 100 lfm (0.5 m/s) 30 lfm (0.15 m/s) fig. 3.3v.3: available load current vs. ambient temperature and airflow rates for asq24s15033 converter mounted verti- cally with vin = 24v, air flowing from pin 3 to pin 1 and maxi- mum fet temperature ? 120 ? c. ambient temperature [c] 20 30 40 50 60 70 80 90 load current [adc] 0 5 10 15 20 500 lfm (2.5 m/s) 400 lfm (2.0 m/s) 300 lfm (1.5 m/s) 200 lfm (1.0 m/s) 100 lfm (0.5 m/s) 30 lfm (0.15 m/s) fig. 3.3v.2: available load current vs. ambient air temperature and airflow rates for asq24t15033 converter with b height pins mounted horizontally with vin = 24v, air flowing from pin 3 to pin 1 and maximum fet temperature ? 120 ? c. ambient temperature [c] 20 30 40 50 60 70 80 90 load current [adc] 0 5 10 15 20 500 lfm (2.5 m/s) 400 lfm (2.0 m/s) 300 lfm (1.5 m/s) 200 lfm (1.0 m/s) 100 lfm (0.5 m/s) 30 lfm (0.15 m/s) fig. 3.3v.4: available load current vs. ambient temperature and airflow rates for asq24s15033 converter mounted hori- zontally with vin = 24v, air flowing from pin 3 to pin 1 and maximum fet temperature ? 120 ? c.
mcd10004 rev. 1.3, 19-oct-09 page 29 of 70 www.power-one.com asq24 dc-dc converter series data sheet 18 to 36 vdc input; 1.0 to 12 vdc output asq24t/s15033 (3.3 volts out) load current [adc] 0246810121416 efficiency 0.65 0.70 0.75 0.80 0.85 0.90 0.95 36 v 24 v 18 v fig. 3.3v.5: efficiency vs. load current and input voltage for asq24t/s15033 converter mounted vertically with air flowing from pin 3 to pin 1 at a rate of 300 lfm (1.5 m/s) and ta = 25 ? c. load current [adc] 0246810121416 power dissipation [w] 0.00 2.00 4.00 6.00 8.00 36 v 24 v 18 v fig. 3.3v.7: power dissipation vs. load current and input volt- age for asq24t/s15033 converter mounted vertically with air flowing from pin 3 to pin 1 at a rate of 300 lfm (1.5 m/s) and ta = 25 ? c. load current [adc] 0246810121416 efficiency 0.65 0.70 0.75 0.80 0.85 0.90 0.95 70 c 55 c 40 c fig. 3.3v.6: efficiency vs. load current and ambient tempera- ture for asq24t/s15033 converter mounted vertically with vin = 24v and air flowing from pin 3 to pin 1 at a rate of 200 lfm (1.0 m/s). load current [adc] 0246810121416 power dissipation [w] 0.00 2.00 4.00 6.00 8.00 70 c 55 c 40 c fig. 3.3v.8: power dissipation vs. load current and ambient temperature for asq24t/s15033 converter mounted vertically with vin = 24v and air flowing from pin 3 to pin 1 at a rate of 200 lfm (1.0 m/s).
mcd10004 rev. 1.3, 19-oct-09 page 30 of 70 www.power-one.com asq24 dc-dc converter series data sheet 18 to 36 vdc input; 1.0 to 12 vdc output asq24t/s15033 (3.3 volts out) fig. 3.3v.9: turn-on transient at full rated load current (resis- tive) with no output capacitor at vin = 24v, triggered via on/off pin. top trace: on/off signal (5 v/div.). bottom trace: output voltage (1 v/div.). time scale: 2 ms/div. fig. 3.3v.11: output voltage response to load current step- change (3.75a ? 7.5a ? 3.75a) at vin = 24v. top trace: output voltage (100 mv/div.). bottom trac e: load current (5 a/div.). current slew rate: 0.1 a/ ? s. co = 1 ? f ceramic. time scale: 0.2 ms/div. fig. 3.3v.10: turn-on transient at full rated load current (resis- tive) plus 10,000 ? f at vin = 24v, triggered via on/off pin. top trace: on/off signal (5 v/di v.). bottom trace: output volt- age (1 v/div.). time scale: 2 ms/div. fig. 3.3v.12: output voltage response to load current step- change (3.75a ? 7.5a ? 3.75a) at vin = 24v. top trace: output voltage (100 mv/div.). bottom trac e: load current (5 a/div.). current slew rate: 5 a/ ? s. co = 450 ? f tantalum + 1 ? f ce- ramic. time scale: 0.2 ms/div.
mcd10004 rev. 1.3, 19-oct-09 page 31 of 70 www.power-one.com asq24 dc-dc converter series data sheet 18 to 36 vdc input; 1.0 to 12 vdc output asq24t/s15033 (3.3 volts out) fig. 3.3v.13: output voltage ripple (20 mv/div.) at full rated load current into a resistive load with co = 10 ? f tantalum + 1uf ceramic and vin = 24v. time scale: 1 ? s/div. fig. 3.3v.15: input reflected ripple current, i c (100 ma/div.), measured at input terminals at full rated load current and vin = 24v. refer to fig. 3.3v.14 fo r test setup. time scale: 1 ? s/div. vout v source i s i c 1 ? f ceramic capacitor 10 ? h source inductance semi q tm family dc/dc converter 33 ? f esr <1 electrolytic capacitor fig. 3.3v.14: test setup for measuring input reflected ripple currents, i c and i s . fig. 3.3v.16: input reflected ripple current, i s (10 ma/div.), measured through 10 ? h at the source at full rated load current and vin = 24v. refer to fig. 3.3v.14 for test setup. time scale: 1 ? s/div.
mcd10004 rev. 1.3, 19-oct-09 page 32 of 70 www.power-one.com asq24 dc-dc converter series data sheet 18 to 36 vdc input; 1.0 to 12 vdc output asq24t/s15033 (3.3 volts out) 20 5 4 iout [adc] vout [vdc] 0 0 2 1 10 15 3 fig. 3.3v.17: output voltage vs. load current showing current limit point and converter shutdown point. input voltage has al- most no effect on current limit characteristic. fig. 3.3v.18: load current (top trace, 20 a/div., 20 ms/div.) into a 10 m ? short circuit during restart, at vin = 24v. bottom trace (20 a/div., 1 ms/div.) is an expansion of the on-time por- tion of the top trace.
mcd10004 rev. 1.3, 19-oct-09 page 33 of 70 www.power-one.com asq24 dc-dc converter series data sheet 18 to 36 vdc input; 1.0 to 12 vdc output electrical specifications: asq24t/s15025 (2.5 volts out) conditions: t a =25oc, airflow=300 lfm (1.5 m/s), vin=24vdc, vout=2.5 vdc unless otherwise specified. parameter notes min typ max units input characteristics maximum input current 15 adc, 2.5 vdc out @ 18 vdc in 2.5 adc input stand-by current vin = 24v, converter disabled 3 madc input no load current (0 load on the output) vin = 24v, converter enabled 67 madc input reflected-ripple current 25mhz bandwidth 6 ma pk-pk input voltage ripple rejection 120hz tbd db output characteristics output voltage set point (no load) 2.475 2.500 2.525 vdc output regulation over line 2 5 mv over load 2 5 mv output voltage range over line, load and temperature 2 2.462 2.538 vdc output ripple and noise - 25mhz bandwidth full load + 10 f tantalum + 1 f ceramic 30 50 mv pk-pk external load capacitance plus full load (resistive) 15,000 f output current range 0 15 adc current limit inception non-latching 18 20 adc peak short-circuit current non-latching. short=10m ? . 30 40 a rms short-circuit current non-latching 5.3 arms dynamic response load change 25% of iout max, di/dt = 0.1 a/ s co = 1 f ceramic) 110 mv di/dt = 5 a/ s co = 450 f tant. + 1 f ceramic 120 mv setting time to 1% 150 s efficiency 100% load 86.5 % 50% load 87 % additional notes: 2. -40oc to 85oc
mcd10004 rev. 1.3, 19-oct-09 page 34 of 70 www.power-one.com asq24 dc-dc converter series data sheet 18 to 36 vdc input; 1.0 to 12 vdc output asq24t/s15025 (2.5 volts out) ambient temperature [c] 20 30 40 50 60 70 80 90 load current [adc] 0 5 10 15 20 500 lfm (2.5 m/s) 400 lfm (2.0 m/s) 300 lfm (1.5 m/s) 200 lfm (1.0 m/s) 100 lfm (0.5 m/s) 30 lfm (0.15 m/s) fig. 2.5v.1: available load current vs. ambient air temperature and airflow rates for asq24t15025 converter with b height pins mounted vertically with vin = 24v, air flowing from pin 3 to pin 1 and maximum fet temperature ? 120 ? c. ambient temperature [c] 20 30 40 50 60 70 80 90 load current [adc] 0 5 10 15 20 500 lfm (2.5 m/s) 400 lfm (2.0 m/s) 300 lfm (1.5 m/s) 200 lfm (1.0 m/s) 100 lfm (0.5 m/s) 30 lfm (0.15 m/s) fig. 2.5v.3: available load current vs. ambient temperature and airflow rates for asq24s15025 converter mounted verti- cally with vin = 24v, air flowing from pin 3 to pin 1 and maxi- mum fet temperature ? 120 ? c. ambient temperature [c] 20 30 40 50 60 70 80 90 load current [adc] 0 5 10 15 20 500 lfm (2.5 m/s) 400 lfm (2.0 m/s) 300 lfm (1.5 m/s) 200 lfm (1.0 m/s) 100 lfm (0.5 m/s) 30 lfm (0.15 m/s) fig. 2.5v.2: available load current vs. ambient air temperature and airflow rates for asq24t15025 converter with b height pins mounted horizontally with vin = 24v, air flowing from pin 3 to pin 1 and maximum fet temperature ? 120 ? c. ambient temperature [c] 20 30 40 50 60 70 80 90 load current [adc] 0 5 10 15 20 500 lfm (2.5 m/s) 400 lfm (2.0 m/s) 300 lfm (1.5 m/s) 200 lfm (1.0 m/s) 100 lfm (0.5 m/s) 30 lfm (0.15 m/s) fig. 2.5v.4: available load current vs. ambient temperature and airflow rates for asq24s15025 converter mounted hori- zontally with vin = 24v, air flowing from pin 3 to pin 1 and maximum fet temperature ? 120 ? c.
mcd10004 rev. 1.3, 19-oct-09 page 35 of 70 www.power-one.com asq24 dc-dc converter series data sheet 18 to 36 vdc input; 1.0 to 12 vdc output asq24t/s15025 (2.5 volts out) load current [adc] 0246810121416 efficiency 0.65 0.70 0.75 0.80 0.85 0.90 0.95 36 v 24 v 18 v fig. 2.5v.5: efficiency vs. load current and input voltage for asq24t/s15025 converter mounted vertically with air flowing from pin 3 to pin 1 at a rate of 300 lfm (1.5 m/s) and ta = 25 ? c. load current [adc] 0246810121416 power dissipation [w] 0.00 2.00 4.00 6.00 8.00 36 v 24 v 18 v fig. 2.5v.7: power dissipation vs. load current and input volt- age for asq24t/s15025 converter mounted vertically with air flowing from pin 3 to pin 1 at a rate of 300 lfm (1.5 m/s) and ta = 25 ? c. load current [adc] 0246810121416 efficiency 0.65 0.70 0.75 0.80 0.85 0.90 0.95 70 c 55 c 40 c fig. 2.5v.6: efficiency vs. load current and ambient tempera- ture for asq24t/s15025 converter mounted vertically with vin = 24v and air flowing from pin 3 to pin 1 at a rate of 200 lfm (1.0 m/s). load current [adc] 0246810121416 power dissipation [w] 0.00 2.00 4.00 6.00 8.00 70 c 55 c 40 c fig. 2.5v.8: power dissipation vs. load current and ambient temperature for asq24t/s15025 converter mounted vertically with vin = 24v and air flowing from pin 3 to pin 1 at a rate of 200 lfm (1.0 m/s).
mcd10004 rev. 1.3, 19-oct-09 page 36 of 70 www.power-one.com asq24 dc-dc converter series data sheet 18 to 36 vdc input; 1.0 to 12 vdc output asq24t/s15025 (2.5 volts out) fig. 2.5v.9: turn-on transient at full rated load current (resis- tive) with no output capacitor at vin = 24v, triggered via on/off pin. top trace: on/off signal (5 v/div.). bottom trace: output voltage (1 v/div.). time scale: 1 ms/div. fig. 2.5v.11: output voltage response to load current step- change (3.75 a ? 7.5 a ? 3.75 a) at vin = 24v. top trace: out- put voltage (100 mv/div.). bottom tr ace: load current (5 a/div.). current slew rate: 0.1 a/ ? s. co = 1 ? f ceramic. time scale: 0.2 ms/div. fig. 2.5v.10: turn-on transient at full rated load current (resis- tive) plus 10,000 ? f at vin = 24v, triggered via on/off pin. top trace: on/off signal (5 v/di v.). bottom trace: output volt- age (1 v/div.). time scale: 1 ms/div. fig. 2.5v.12: output voltage response to load current step- change (3.75 a ? 7.5 a ? 3.75 a) at vin = 24v. top trace: out- put voltage (100 mv/div.). bottom tr ace: load current (5 a/div.). current slew rate: 5 a/ ? s. co = 450 ? f tantalum + 1 ? f ce- ramic. time scale: 0.2 ms/div.
mcd10004 rev. 1.3, 19-oct-09 page 37 of 70 www.power-one.com asq24 dc-dc converter series data sheet 18 to 36 vdc input; 1.0 to 12 vdc output asq24t/s15025 (2.5 volts out) fig. 2.5v.13: output voltage ripple (20 mv/div.) at full rated load current into a resistive load with co = 10 ? f tantalum + 1uf ceramic and vin = 24v. time scale: 1 ? s/div. fig. 2.5v.15: input reflected ripple current, i c (100 ma/div.), measured at input terminals at full rated load current and vin = 24v. refer to fig. 2.5v.14 fo r test setup. time scale: 1 ? s/div. vout v source i s i c 1 ? f ceramic capacitor 10 ? h source inductance semi q tm family dc/dc converter 33 ? f esr <1 electrolytic capacitor fig. 2.5v.14: test setup for measuring input reflected ripple currents, i c and i s . fig. 2.5v.16: input reflected ripple current, i s (10 ma/div.), measured through 10 ? h at the source at full rated load current and vin = 24v. refer to fig. 2.5v.14 for test setup. time scale: 1 ? s/div.
mcd10004 rev. 1.3, 19-oct-09 page 38 of 70 www.power-one.com asq24 dc-dc converter series data sheet 18 to 36 vdc input; 1.0 to 12 vdc output asq24t/s15025 (2.5 volts out) 5 20 3 iout [adc] vout [vdc] 0 0 1 10 15 2 fig. 2.5v.17: output voltage vs. load current showing current limit point and converter shutdown point. input voltage has al- most no effect on current limit characteristic. fig. 2.5v.18: load current (top trace, 20 a/div., 20 ms/div.) into a 10 m ? short circuit during restart, at vin = 24v. bottom trace (20 a/div., 1 ms/div.) is an expansion of the on-time por- tion of the top trace.
mcd10004 rev. 1.3, 19-oct-09 page 39 of 70 www.power-one.com asq24 dc-dc converter series data sheet 18 to 36 vdc input; 1.0 to 12 vdc output electrical specifications: asq24t/s15020 (2.0 volts out) conditions: t a =25oc, airflow=300 lfm (1.5 m/s), vin=24vdc, vout=2.0 vdc unless otherwise specified. parameter notes min typ max units input characteristics maximum input current 15 adc, 2.0 vdc out @ 18 vdc in 2 adc input stand-by current vin = 24v, converter disabled 3 madc input no load current (0 load on the output) vin = 24v, converter enabled 57 madc input reflected-ripple current 25mhz bandwidth 6 ma pk-pk input voltage ripple rejection 120hz tbd db output characteristics output voltage set point (no load) 1.98 2.000 2.02 vdc output regulation over line 2 5 mv over load 2 5 mv output voltage range over line, load and temperature 2 1.970 2.030 vdc output ripple and noise - 25mhz bandwidth full load + 10 f tantalum + 1 f ceramic 30 50 mv pk-pk external load capacitance plus full load (resistive) 15,000 f output current range 0 15 adc current limit inception non-latching 18 20 adc peak short-circuit current non-latching. short=10m ? . 30 40 a rms short-circuit current non-latching 5.3 arms dynamic response load change 25% of iout max, di/dt = 0.1 a/ s co = 1 f ceramic 100 mv di/dt = 5 a/ s co = 450 f tant. + 1 f ceramic 120 mv setting time to 1% 150 s efficiency 100% load 85 % 50% load 85 % additional notes: 2. -40oc to 85oc
mcd10004 rev. 1.3, 19-oct-09 page 40 of 70 www.power-one.com asq24 dc-dc converter series data sheet 18 to 36 vdc input; 1.0 to 12 vdc output asq24t/s15020 (2.0 volts out) ambient temperature [c] 20 30 40 50 60 70 80 90 load current [adc] 0 5 10 15 20 500 lfm (2.5 m/s) 400 lfm (2.0 m/s) 300 lfm (1.5 m/s) 200 lfm (1.0 m/s) 100 lfm (0.5 m/s) 30 lfm (0.15 m/s) fig. 2.0v.1: available load current vs. ambient air temperature and airflow rates for asq24t15020 converter with b height pins mounted vertically with vin = 24v, air flowing from pin 3 to pin 1 and maximum fet temperature ? 120 ? c. ambient temperature [c] 20 30 40 50 60 70 80 90 load current [adc] 0 5 10 15 20 500 lfm (2.5 m/s) 400 lfm (2.0 m/s) 300 lfm (1.5 m/s) 200 lfm (1.0 m/s) 100 lfm (0.5 m/s) 30 lfm (0.15 m/s) fig. 2.0v.3: available load current vs. ambient temperature and airflow rates for asq24s15020 converter mounted verti- cally with vin = 24v, air flowing from pin 3 to pin 1 and maxi- mum fet temperature ? 120 ? c. ambient temperature [c] 20 30 40 50 60 70 80 90 load current [adc] 0 5 10 15 20 500 lfm (2.5 m/s) 400 lfm (2.0 m/s) 300 lfm (1.5 m/s) 200 lfm (1.0 m/s) 100 lfm (0.5 m/s) 30 lfm (0.15 m/s) fig. 2.0v.2: available load current vs. ambient air temperature and airflow rates for asq24t15020 converter with b height pins mounted horizontally with vin = 24v, air flowing from pin 3 to pin 1 and maximum fet temperature ? 120 ? c. ambient temperature [c] 20 30 40 50 60 70 80 90 load current [adc] 0 5 10 15 20 500 lfm (2.5 m/s) 400 lfm (2.0 m/s) 300 lfm (1.5 m/s) 200 lfm (1.0 m/s) 100 lfm (0.5 m/s) 30 lfm (0.15 m/s) fig. 2.0v.4: available load current vs. ambient temperature and airflow rates for asq24s15020 converter mounted hori- zontally with vin = 24v, air flowing from pin 3 to pin 1 and maximum fet temperature ? 120 ? c.
mcd10004 rev. 1.3, 19-oct-09 page 41 of 70 www.power-one.com asq24 dc-dc converter series data sheet 18 to 36 vdc input; 1.0 to 12 vdc output asq24t/s15020 (2.0 volts out) load current [adc] 0246810121416 efficiency 0.65 0.70 0.75 0.80 0.85 0.90 0.95 36 v 24 v 18 v fig. 2.0v.5: efficiency vs. load current and input voltage for asq24t/s15020 converter mounted vertically with air flowing from pin 3 to pin 1 at a rate of 300 lfm (1.5 m/s) and ta = 25 ? c. load current [adc] 0246810121416 power dissipation [w] 0.00 1.00 2.00 3.00 4.00 5.00 6.00 36 v 24 v 18 v fig. 2.0v.7: power dissipation vs. load current and input volt- age for asq24t/s15020 converter mounted vertically with air flowing from pin 3 to pin 1 at a rate of 300 lfm (1.5 m/s) and ta = 25 ? c. load current [adc] 0246810121416 efficiency 0.65 0.70 0.75 0.80 0.85 0.90 0.95 70 c 55 c 40 c fig. 2.0v.6: efficiency vs. load current and ambient tempera- ture for asq24t/s15020 converter mounted vertically with vin = 24v and air flowing from pin 3 to pin 1 at a rate of 200 lfm (1.0 m/s). load current [adc] 0246810121416 power dissipation [w] 0.00 1.00 2.00 3.00 4.00 5.00 6.00 70 c 55 c 40 c fig. 2.0v.8: power dissipation vs. load current and ambient temperature for asq24t/s15020 converter mounted vertically with vin = 24v and air flowing from pin 3 to pin 1 at a rate of 200 lfm (1.0 m/s).
mcd10004 rev. 1.3, 19-oct-09 page 42 of 70 www.power-one.com asq24 dc-dc converter series data sheet 18 to 36 vdc input; 1.0 to 12 vdc output asq24t/s15020 (2.0 volts out) fig. 2.0v.9: turn-on transient at full rated load current (resis- tive) with no output capacitor at vin = 24v, triggered via on/off pin. top trace: on/off signal (5 v/div.). bottom trace: output voltage (1 v/div.). time scale: 1 ms/div. fig. 2.0v.11: output voltage response to load current step- change (3.75a ? 7.5a ? 3.75a) at vin = 24v. top trace: output voltage (100 mv/div.). bottom trac e: load current (5 a/div.). current slew rate: 0.1 a/ ? s. co = 1 ? f ceramic. time scale: 0.2 ms/div. fig. 2.0v.10: turn-on transient at full rated load current (resis- tive) plus 10,000 ? f at vin = 24v, triggered via on/off pin. top trace: on/off signal (5 v/di v.). bottom trace: output volt- age (1 v/div.). time scale: 1 ms/div. fig. 2.0v.12: output voltage response to load current step- change (3.75a ? 7.5a ? 3.75a) at vin = 24v. top trace: output voltage (100 mv/div.). bottom trac e: load current (5 a/div.). current slew rate: 5 a/ ? s. co = 450 ? f tantalum + 1 ? f ce- ramic. time scale: 0.2 ms/div.
mcd10004 rev. 1.3, 19-oct-09 page 43 of 70 www.power-one.com asq24 dc-dc converter series data sheet 18 to 36 vdc input; 1.0 to 12 vdc output asq24t/s15020 (2.0 volts out) fig. 2.0v.13: output voltage ripple (20 mv/div.) at full rated load current into a resistive load with co = 10 ? f tantalum + 1uf ceramic and vin = 24v. time scale: 1 ? s/div. fig. 2.0v.15: input reflected ripple current, i c (100 ma/div.), measured at input terminals at full rated load current and vin = 24v. refer to fig. 2.0v.14 fo r test setup. time scale: 1 ? s/div. vout v source i s i c 1 ? f ceramic capacitor 10 ? h source inductance semi q tm family dc/dc converter 33 ? f esr <1 electrolytic capacitor fig. 2.0v.14: test setup for measuring input reflected ripple currents, i c and i s . fig. 2.0v.16: input reflected ripple current, i s (10 ma/div.), measured through 10 ? h at the source at full rated load current and vin = 24v. refer to fig. 2.0v.14 for test setup. time scale: 1 ? s/div.
mcd10004 rev. 1.3, 19-oct-09 page 44 of 70 www.power-one.com asq24 dc-dc converter series data sheet 18 to 36 vdc input; 1.0 to 12 vdc output asq24t/s15020 (2.0 volts out) 5 20 3 iout [adc] vout [vdc] 0 0 1 10 15 2 fig. 2.0v.17: output voltage vs. load current showing current limit point and converter shutdown point. input voltage has al- most no effect on current limit characteristic. fig. 2.0v.18: load current (top trace, 20 a/div., 20 ms/div.) into a 10 m ? short circuit during restart, at vin = 24v. bottom trace (20 a/div., 2 ms/div.) is an expansion of the on-time por- tion of the top trace.
mcd10004 rev. 1.3, 19-oct-09 page 45 of 70 www.power-one.com asq24 dc-dc converter series data sheet 18 to 36 vdc input; 1.0 to 12 vdc output electrical specifications: asq24t/s15018 (1.8 volts out) conditions: t a =25oc, airflow=300 lfm (1.5 m/s), vin=24vdc, vout=1.8 vdc unless otherwise specified. parameter notes min typ max units input characteristics maximum input current 15 adc, 1.8 vdc out @ 18 vdc in 1.8 adc input stand-by current vin = 24v, converter disabled 3 madc input no load current (0 load on the output) vin = 24v, converter enabled 53 madc input reflected-ripple current 25mhz bandwidth 6 ma pk-pk input voltage ripple rejection 120hz tbd db output characteristics output voltage set point (no load) 1.782 1.800 1.818 vdc output regulation over line 2 4 mv over load 2 5 mv output voltage range over line, load and temperature 2 1.773 1.827 vdc output ripple and noise - 25mhz bandwidth full load + 10 f tantalum + 1 f ceramic 30 50 mv pk-pk external load capacitance plus full load (resistive) 15,000 f output current range 0 15 adc current limit inception non-latching 18 20 adc peak short-circuit current non-latching. short=10m ? . 30 40 a rms short-circuit current non-latching 5.3 arms dynamic response load change 25% of iout max, di/dt = 0.1 a/ s co = 1 f ceramic 100 mv di/dt = 5 a/ s co = 450 f tant. + 1 f ceramic 120 mv setting time to 1% 150 s efficiency 100% load 84.5 % 50% load 84 % additional notes: 2. -40oc to 85oc
mcd10004 rev. 1.3, 19-oct-09 page 46 of 70 www.power-one.com asq24 dc-dc converter series data sheet 18 to 36 vdc input; 1.0 to 12 vdc output asq24t/s15018 (1.8 volts out) ambient temperature [c] 20 30 40 50 60 70 80 90 load current [adc] 0 5 10 15 20 500 lfm (2.5 m/s) 400 lfm (2.0 m/s) 300 lfm (1.5 m/s) 200 lfm (1.0 m/s) 100 lfm (0.5 m/s) 30 lfm (0.15 m/s) fig. 1.8v.1: available load current vs. ambient air temperature and airflow rates for asq24t15018 converter with b height pins mounted vertically with vin = 24v, air flowing from pin 3 to pin 1 and maximum fet temperature ? 120 ? c. ambient temperature [c] 20 30 40 50 60 70 80 90 load current [adc] 0 5 10 15 20 500 lfm (2.5 m/s) 400 lfm (2.0 m/s) 300 lfm (1.5 m/s) 200 lfm (1.0 m/s) 100 lfm (0.5 m/s) 30 lfm (0.15 m/s) fig. 1.8v.3: available load current vs. ambient temperature and airflow rates for asq24s15018 converter mounted verti- cally with vin = 24v, air flowing from pin 3 to pin 1 and maxi- mum fet temperature ? 120 ? c. ambient temperature [c] 20 30 40 50 60 70 80 90 load current [adc] 0 5 10 15 20 500 lfm (2.5 m/s) 400 lfm (2.0 m/s) 300 lfm (1.5 m/s) 200 lfm (1.0 m/s) 100 lfm (0.5 m/s) 30 lfm (0.15 m/s) fig. 1.8v.2: available load current vs. ambient air temperature and airflow rates for asq24t15018 converter with b height pins mounted horizontally with vin = 24v, air flowing from pin 3 to pin 1 and maximum fet temperature ? 120 ? c. ambient temperature [c] 20 30 40 50 60 70 80 90 load current [adc] 0 5 10 15 20 500 lfm (2.5 m/s) 400 lfm (2.0 m/s) 300 lfm (1.5 m/s) 200 lfm (1.0 m/s) 100 lfm (0.5 m/s) 30 lfm (0.15 m/s) fig. 1.8v.4: available load current vs. ambient temperature and airflow rates for asq24s15018 converter mounted hori- zontally with vin = 24v, air flowing from pin 3 to pin 1 and maximum fet temperature ? 120 ? c.
mcd10004 rev. 1.3, 19-oct-09 page 47 of 70 www.power-one.com asq24 dc-dc converter series data sheet 18 to 36 vdc input; 1.0 to 12 vdc output asq24t/s15018 (1.8 volts out) load current [adc] 0246810121416 efficiency 0.65 0.70 0.75 0.80 0.85 0.90 0.95 36 v 24 v 18 v fig. 1.8v.5: efficiency vs. load current and input voltage for asq24t/s15018 converter mounted vertically with air flowing from pin 3 to pin 1 at a rate of 300 lfm (1.5 m/s) and ta = 25 ? c. load current [adc] 0246810121416 power dissipation [w] 0.00 1.00 2.00 3.00 4.00 5.00 6.00 36 v 24 v 18 v fig. 1.8v.7: power dissipation vs. load current and input volt- age for asq24t/s15018 converter mounted vertically with air flowing from pin 3 to pin 1 at a rate of 300 lfm (1.5 m/s) and ta = 25 ? c. load current [adc] 0246810121416 efficiency 0.65 0.70 0.75 0.80 0.85 0.90 0.95 70 c 55 c 40 c fig. 1.8v.6: efficiency vs. load current and ambient tempera- ture for asq24t/s15018 converter mounted vertically with vin = 24v and air flowing from pin 3 to pin 1 at a rate of 200 lfm (1.0 m/s). load current [adc] 0246810121416 power dissipation [w] 0.00 1.00 2.00 3.00 4.00 5.00 6.00 70 c 55 c 40 c fig. 1.8v.8: power dissipation vs. load current and ambient temperature for asq24t/s15018 converter mounted vertically with vin = 24v and air flowing from pin 3 to pin 1 at a rate of 200 lfm (1.0 m/s).
mcd10004 rev. 1.3, 19-oct-09 page 48 of 70 www.power-one.com asq24 dc-dc converter series data sheet 18 to 36 vdc input; 1.0 to 12 vdc output asq24t/s15018 (1.8 volts out) fig. 1.8v.9: turn-on transient at full rated load current (resis- tive) with no output capacitor at vin = 24v, triggered via on/off pin. top trace: on/off signal (5 v/div.). bottom trace: output voltage (1 v/div.). time scale: 1 ms/div. fig. 1.8v.11: output voltage response to load current step- change (3.75a ? 7.5a ? 3.75a) at vin = 24v. top trace: output voltage (100 mv/div.). bottom trac e: load current (5 a/div.). current slew rate: 0.1 a/ ? s. co = 1 ? f ceramic. time scale: 0.2 ms/div. fig. 1.8v.10: turn-on transient at full rated load current (resis- tive) plus 10,000 ? f at vin = 24v, triggered via on/off pin. top trace: on/off signal (5 v/di v.). bottom trace: output volt- age (1 v/div.). time scale: 1 ms/div. fig. 1.8v.12: output voltage response to load current step- change (3.75a ? 7.5a ? 3.75a) at vin = 24v. top trace: output voltage (100 mv/div.). bottom trac e: load current (5 a/div.). current slew rate: 5 a/ ? s. co = 450 ? f tantalum + 1 ? f ce- ramic. time scale: 0.2 ms/div.
mcd10004 rev. 1.3, 19-oct-09 page 49 of 70 www.power-one.com asq24 dc-dc converter series data sheet 18 to 36 vdc input; 1.0 to 12 vdc output asq24t/s15018 (1.8 volts out) fig. 1.8v.13: output voltage ripple (20 mv/div.) at full rated load current into a resistive load with co = 10 ? f tantalum + 1uf ceramic and vin = 24v. time scale: 1 ? s/div. fig. 1.8v.15: input reflected ripple current, i c (100 ma/div.), measured at input terminals at full rated load current and vin = 24v. refer to fig. 1.8v.14 fo r test setup. time scale: 1 ? s/div. vout v source i s i c 1 ? f ceramic capacitor 10 ? h source inductance semi q tm family dc/dc converter 33 ? f esr <1 electrolytic capacitor fig. 1.8v.14: test setup for measuring input reflected ripple currents, i c and i s . fig. 1.8v.16: input reflected ripple current, i s (10 ma/div.), measured through 10 ? h at the source at full rated load current and vin = 24v. refer to fig. 1.8v.14 for test setup. time scale: 1 ? s/div.
mcd10004 rev. 1.3, 19-oct-09 page 50 of 70 www.power-one.com asq24 dc-dc converter series data sheet 18 to 36 vdc input; 1.0 to 12 vdc output asq24t/s15018 (1.8 volts out) 5 20 3 iout [adc] vout [vdc] 0 0 1 10 15 2 fig. 1.8v.17: output voltage vs. load current showing current limit point and converter shutdown point. input voltage has al- most no effect on current limit characteristic. fig. 1.8v.18: load current (top trace, 20 a/div., 20 ms/div.) into a 10 m ? short circuit during restart, at vin = 24v. bottom trace (20 a/div., 2 ms/div.) is an expansion of the on-time por- tion of the top trace.
mcd10004 rev. 1.3, 19-oct-09 page 51 of 70 www.power-one.com asq24 dc-dc converter series data sheet 18 to 36 vdc input; 1.0 to 12 vdc output electrical specifications: asq24t/s15015 (1.5 volts out) conditions: t a =25oc, airflow=300 lfm (1.5 m/s), vin=24vdc, vout=1.5 vdc unless otherwise specified. parameter notes min typ max units input characteristics maximum input current 15 adc, 1.5 vdc out @ 18 vdc in 1.6 adc input stand-by current vin = 24v, converter disabled 2.6 madc input no load current (0 load on the output) vin = 24v, converter enabled 48 madc input reflected-ripple current 25mhz bandwidth 6 ma pk-pk input voltage ripple rejection 120hz tbd db output characteristics output voltage set point (no load) 1.485 1.500 1.515 vdc output regulation over line 2 4 mv over load 2 4 mv output voltage range over line, load and temperature 2 1.477 1.523 vdc output ripple and noise - 25mhz bandwidth full load + 10 f tantalum + 1 f ceramic 30 50 mv pk-pk external load capacitance plus full load (resistive) 15,000 f output current range 0 15 adc current limit inception non-latching 18 20 adc peak short-circuit current non-latching. short=10m ? . 30 40 a rms short-circuit current non-latching 5.3 arms dynamic response load change 25% of iout max, di/dt = 0.1 a/ s co = 1 f ceramic 80 mv di/dt = 5 a/ s co = 450 f tant. + 1 f ceramic 120 mv setting time to 1% 170 s efficiency 100% load 83 % 50% load 83 % additional notes: 2. -40oc to 85oc
mcd10004 rev. 1.3, 19-oct-09 page 52 of 70 www.power-one.com asq24 dc-dc converter series data sheet 18 to 36 vdc input; 1.0 to 12 vdc output asq24t/s15015 (1.5 volts out) ambient temperature [c] 20 30 40 50 60 70 80 90 load current [adc] 0 5 10 15 20 500 lfm (2.5 m/s) 400 lfm (2.0 m/s) 300 lfm (1.5 m/s) 200 lfm (1.0 m/s) 100 lfm (0.5 m/s) 30 lfm (0.15 m/s) fig. 1.5v.1: available load current vs. ambient air temperature and airflow rates for asq24t15015 converter with b height pins mounted vertically with vin = 24v, air flowing from pin 3 to pin 1 and maximum fet temperature ? 120 ? c. ambient temperature [c] 20 30 40 50 60 70 80 90 load current [adc] 0 5 10 15 20 500 lfm (2.5 m/s) 400 lfm (2.0 m/s) 300 lfm (1.5 m/s) 200 lfm (1.0 m/s) 100 lfm (0.5 m/s) 30 lfm (0.15 m/s) fig. 1.5v.3: available load current vs. ambient temperature and airflow rates for asq24s15015 converter mounted verti- cally with vin = 24v, air flowing from pin 3 to pin 1 and maxi- mum fet temperature ? 120 ? c. ambient temperature [c] 20 30 40 50 60 70 80 90 load current [adc] 0 5 10 15 20 500 lfm (2.5 m/s) 400 lfm (2.0 m/s) 300 lfm (1.5 m/s) 200 lfm (1.0 m/s) 100 lfm (0.5 m/s) 30 lfm (0.15 m/s) fig. 1.5v.2: available load current vs. ambient air temperature and airflow rates for asq24t15015 converter with b height pins mounted horizontally with vin = 24v, air flowing from pin 3 to pin 1 and maximum fet temperature ? 120 ? c. ambient temperature [c] 20 30 40 50 60 70 80 90 load current [adc] 0 5 10 15 20 500 lfm (2.5 m/s) 400 lfm (2.0 m/s) 300 lfm (1.5 m/s) 200 lfm (1.0 m/s) 100 lfm (0.5 m/s) 30 lfm (0.15 m/s) fig. 1.5v.4: available load current vs. ambient temperature and airflow rates for asq24s15015 converter mounted hori- zontally with vin = 24v, air flowing from pin 3 to pin 1 and maximum fet temperature ? 120 ? c.
mcd10004 rev. 1.3, 19-oct-09 page 53 of 70 www.power-one.com asq24 dc-dc converter series data sheet 18 to 36 vdc input; 1.0 to 12 vdc output asq24t/s15015 (1.5 volts out) load current [adc] 0246810121416 efficiency 0.65 0.70 0.75 0.80 0.85 0.90 0.95 36 v 24 v 18 v fig. 1.5v.5: efficiency vs. load current and input voltage for asq24t/s15015 converter mounted vertically with air flowing from pin 3 to pin 1 at a rate of 300 lfm (1.5 m/s) and ta = 25 ? c. load current [adc] 0246810121416 power dissipation [w] 0.00 1.00 2.00 3.00 4.00 5.00 6.00 36 v 24 v 18 v fig. 1.5v.7: power dissipation vs. load current and input volt- age for asq24t/s15015 converter mounted vertically with air flowing from pin 3 to pin 1 at a rate of 300 lfm (1.5 m/s) and ta = 25 ? c. load current [adc] 0246810121416 efficiency 0.65 0.70 0.75 0.80 0.85 0.90 0.95 70 c 55 c 40 c fig. 1.5v.6: efficiency vs. load current and ambient tempera- ture for asq24t/s15015 converter mounted vertically with vin = 24v and air flowing from pin 3 to pin 1 at a rate of 200 lfm (1.0 m/s). load current [adc] 0246810121416 power dissipation [w] 0.00 1.00 2.00 3.00 4.00 5.00 6.00 70 c 55 c 40 c fig. 1.5v.8: power dissipation vs. load current and ambient temperature for asq24t/s15015 converter mounted vertically with vin = 24v and air flowing from pin 3 to pin 1 at a rate of 200 lfm (1.0 m/s).
mcd10004 rev. 1.3, 19-oct-09 page 54 of 70 www.power-one.com asq24 dc-dc converter series data sheet 18 to 36 vdc input; 1.0 to 12 vdc output asq24t/s15015 (1.5 volts out) fig. 1.5v.9: turn-on transient at full rated load current (resis- tive) with no output capacitor at vin = 24v, triggered via on/off pin. top trace: on/off signal (5 v/div.). bottom trace: output voltage (0.5 v/ div.). time scale: 1 ms/div. fig. 1.5v.11: output voltage response to load current step- change (3.75 a ? 7.5 a ? 3.75 a) at vin = 24v. top trace: out- put voltage (100 mv/div.). bottom tr ace: load current (5 a/div.). current slew rate: 0.1 a/ ? s. co = 1 ? f ceramic. time scale: 0.2 ms/div. fig. 1.5v.10: turn-on transient at full rated load current (resis- tive) plus 10,000 ? f at vin = 24v, triggered via on/off pin. top trace: on/off signal (5 v/di v.). bottom trace: output volt- age (0.5 v/div.). time scale: 1 ms/div. fig. 1.5v.12: output voltage response to load current step- change (3.75 a ? 7.5 a ? 3.75 a) at vin = 24v. top trace: out- put voltage (100 mv/div.). bottom tr ace: load current (5 a/div.). current slew rate: 5 a/ ? s. co = 450 ? f tantalum + 1 ? f ce- ramic. time scale: 0.2 ms/div.
mcd10004 rev. 1.3, 19-oct-09 page 55 of 70 www.power-one.com asq24 dc-dc converter series data sheet 18 to 36 vdc input; 1.0 to 12 vdc output asq24t/s15015 (1.5 volts out) fig. 1.5v.13: output voltage ripple (20 mv/div.) at full rated load current into a resistive load with co = 10 ? f tantalum + 1uf ceramic and vin = 24v. time scale: 1 ? s/div. fig. 1.5v.15: input reflected ripple current, i c (100 ma/div.), measured at input terminals at full rated load current and vin = 24v. refer to fig. 1.5v.14 fo r test setup. time scale: 1 ? s/div. vout v source i s i c 1 ? f ceramic capacitor 10 ? h source inductance semi q tm family dc/dc converter 33 ? f esr <1 electrolytic capacitor fig. 1.5v.14: test setup for measuring input reflected ripple currents, i c and i s . fig. 1.5v.16: input reflected ripple current, i s (10 ma/div.), measured through 10 ? h at the source at full rated load current and vin = 24v. refer to fig. 1.5v.14 for test setup. time scale: 1 ? s/div.
mcd10004 rev. 1.3, 19-oct-09 page 56 of 70 www.power-one.com asq24 dc-dc converter series data sheet 18 to 36 vdc input; 1.0 to 12 vdc output asq24t/s15015 (1.5 volts out) 5 20 2.0 iout [adc] vout [vdc] 0 0 1.5 1.0 0.5 10 15 fig. 1.5v.17: output voltage vs. load current showing current limit point and converter shutdown point. input voltage has al- most no effect on current limit characteristic. fig. 1.5v.18: load current (top trace, 20 a/div., 20 ms/div.) into a 10 m ? short circuit during restart, at vin = 24v. bottom trace (20 a/div., 2 ms/div.) is an expansion of the on-time por- tion of the top trace.
mcd10004 rev. 1.3, 19-oct-09 page 57 of 70 www.power-one.com asq24 dc-dc converter series data sheet 18 to 36 vdc input; 1.0 to 12 vdc output electrical specifications: asq24t/s15012 (1.2 volts out) conditions: t a =25oc, airflow=300 lfm (1.5 m/s), vin=24vdc, vout=1.2 vdc unless otherwise specified. parameter notes min typ max units input characteristics maximum input current 15 adc, 1.2 vdc out @ 18 vdc in 1.25 adc input stand-by current vin = 24v, converter disabled 2.6 madc input no load current (0 load on the output) vin = 24v, converter enabled 43 madc input reflected-ripple current 25mhz bandwidth 6 ma pk-pk input voltage ripple rejection 120hz tbd db output characteristics output voltage set point (no load) 1.188 1.200 1.212 vdc output regulation over line 1 3 mv over load 1 3 mv output voltage range over line, load and temperature 2 1.182 1.218 vdc output ripple and noise - 25mhz bandwidth full load + 10 f tantalum + 1 f ceramic 30 50 mv pk-pk external load capacitance plus full load (resistive) 15,000 f output current range 0 15 adc current limit inception non-latching 18 20 adc peak short-circuit current non-latching. short=10m ? . 30 40 a rms short-circuit current non-latching 5.3 arms dynamic response load change 25% of iout max, di/dt = 0.1 a/ s co = 1 f ceramic 90 mv di/dt = 5 a/ s co = 450 f tant. + 1 f ceramic 120 mv setting time to 1% 100 s efficiency 100% load 81 % 50% load 81 % additional notes: 2. -40oc to 85oc
mcd10004 rev. 1.3, 19-oct-09 page 58 of 70 www.power-one.com asq24 dc-dc converter series data sheet 18 to 36 vdc input; 1.0 to 12 vdc output asq24t/s15012 (1.2 volts out) ambient temperature [c] 20 30 40 50 60 70 80 90 load current [adc] 0 5 10 15 20 500 lfm (2.5 m/s) 400 lfm (2.0 m/s) 300 lfm (1.5 m/s) 200 lfm (1.0 m/s) 100 lfm (0.5 m/s) 30 lfm (0.15 m/s) fig. 1.2v.1: available load current vs. ambient air temperature and airflow rates for asq24t15012 converter with b height pins mounted vertically with vin = 24v, air flowing from pin 3 to pin 1 and maximum fet temperature ? 120 ? c. ambient temperature [c] 20 30 40 50 60 70 80 90 load current [adc] 0 5 10 15 20 500 lfm (2.5 m/s) 400 lfm (2.0 m/s) 300 lfm (1.5 m/s) 200 lfm (1.0 m/s) 100 lfm (0.5 m/s) 30 lfm (0.15 m/s) fig. 1.2v.3: available load current vs. ambient temperature and airflow rates for asq24s15012 converter mounted verti- cally with vin = 24v, air flowing from pin 3 to pin 1 and maxi- mum fet temperature ? 120 ? c. ambient temperature [c] 20 30 40 50 60 70 80 90 load current [adc] 0 5 10 15 20 500 lfm (2.5 m/s) 400 lfm (2.0 m/s) 300 lfm (1.5 m/s) 200 lfm (1.0 m/s) 100 lfm (0.5 m/s) 30 lfm (0.15 m/s) fig. 1.2v.2: available load current vs. ambient air temperature and airflow rates for asq24t15012 converter with b height pins mounted horizontally with vin = 24v, air flowing from pin 3 to pin 1 and maximum fet temperature ? 120 ? c. ambient temperature [c] 20 30 40 50 60 70 80 90 load current [adc] 0 5 10 15 20 500 lfm (2.5 m/s) 400 lfm (2.0 m/s) 300 lfm (1.5 m/s) 200 lfm (1.0 m/s) 100 lfm (0.5 m/s) 30 lfm (0.15 m/s) fig. 1.2v.4: available load current vs. ambient temperature and airflow rates for asq24s15012 converter mounted hori- zontally with vin = 24v, air flowing from pin 3 to pin 1 and maximum fet temperature ? 120 ? c.
mcd10004 rev. 1.3, 19-oct-09 page 59 of 70 www.power-one.com asq24 dc-dc converter series data sheet 18 to 36 vdc input; 1.0 to 12 vdc output asq24t/s15012 (1.2 volts out) load current [adc] 0246810121416 efficiency 0.65 0.70 0.75 0.80 0.85 0.90 0.95 36 v 24 v 18 v fig. 1.2v.5: efficiency vs. load current and input voltage for asq24t/s15012 converter mounted vertically with air flowing from pin 3 to pin 1 at a rate of 300 lfm (1.5 m/s) and ta = 25 ? c. load current [adc] 0246810121416 power dissipation [w] 0.00 1.00 2.00 3.00 4.00 5.00 6.00 36 v 24 v 18 v fig. 1.2v.7: power dissipation vs. load current and input volt- age for asq24t/s15012 converter mounted vertically with air flowing from pin 3 to pin 1 at a rate of 300 lfm (1.5 m/s) and ta = 25 ? c. load current [adc] 0246810121416 efficiency 0.65 0.70 0.75 0.80 0.85 0.90 0.95 70 c 55 c 40 c fig. 1.2v.6: efficiency vs. load current and ambient tempera- ture for asq24t/s15012 converter mounted vertically with vin = 24v and air flowing from pin 3 to pin 1 at a rate of 200 lfm (1.0 m/s). load current [adc] 0246810121416 power dissipation [w] 0.00 1.00 2.00 3.00 4.00 5.00 6.00 70 c 55 c 40 c fig. 1.2v.8: power dissipation vs. load current and ambient temperature for asq24t/s15012 converter mounted vertically with vin = 24v and air flowing from pin 3 to pin 1 at a rate of 200 lfm (1.0 m/s).
mcd10004 rev. 1.3, 19-oct-09 page 60 of 70 www.power-one.com asq24 dc-dc converter series data sheet 18 to 36 vdc input; 1.0 to 12 vdc output asq24t/s15012 (1.2 volts out) fig. 1.2v.9: turn-on transient at full rated load current (resis- tive) with no output capacitor at vin = 24v, triggered via on/off pin. top trace: on/off signal (5 v/div.). bottom trace: output voltage (0.5 v/ div.). time scale: 1 ms/div. fig. 1.2v.11: output voltage response to load current step- change (3.75 a ? 7.5 a ? 3.75 a) at vin = 24v. top trace: out- put voltage (100 mv/div.). bottom tr ace: load current (5 a/div.). current slew rate: 0.1 a/ ? s. co = 1 ? f ceramic. time scale: 0.2 ms/div. fig. 1.2v.10: turn-on transient at full rated load current (resis- tive) plus 10,000 ? f at vin = 24v, triggered via on/off pin. top trace: on/off signal (5 v/di v.). bottom trace: output volt- age (0.5 v/div.). time scale: 1 ms/div. fig. 1.2v.12: output voltage response to load current step- change (3.75 a ? 7.5 a ? 3.75 a) at vin = 24v. top trace: out- put voltage (100 mv/div.). bottom tr ace: load current (5 a/div.). current slew rate: 5 a/ ? s. co = 450 ? f tantalum + 1 ? f ce- ramic. time scale: 0.2 ms/div.
mcd10004 rev. 1.3, 19-oct-09 page 61 of 70 www.power-one.com asq24 dc-dc converter series data sheet 18 to 36 vdc input; 1.0 to 12 vdc output asq24t/s15012 (1.2 volts out) fig. 1.2v.13: output voltage ripple (20 mv/div.) at full rated load current into a resistive load with co = 10 ? f tantalum + 1uf ceramic and vin = 24v. time scale: 1 ? s/div. fig. 1.2v.15: input reflected ripple current, i c (100 ma/div.), measured at input terminals at full rated load current and vin = 24v. refer to fig. 1.2v.14 fo r test setup. time scale: 1 ? s/div. vout v source i s i c 1 ? f ceramic capacitor 10 ? h source inductance semi q tm family dc/dc converter 33 ? f esr <1 electrolytic capacitor fig. 1.2v.14: test setup for measuring input reflected ripple currents, i c and i s . fig. 1.2v.16: input reflected ripple current, i s (10 ma/div.), measured through 10 ? h at the source at full rated load current and vin = 24v. refer to fig. 1.2v.14 for test setup. time scale: 1 ? s/div.
mcd10004 rev. 1.3, 19-oct-09 page 62 of 70 www.power-one.com asq24 dc-dc converter series data sheet 18 to 36 vdc input; 1.0 to 12 vdc output asq24t/s15012 (1.2 volts out) 5 20 iout [adc] vout [vdc] 0 0 10 15 1.5 1.0 0.5 fig. 1.2v.17: output voltage vs. load current showing current limit point and converter shutdown point. input voltage has al- most no effect on current limit characteristic. fig. 1.2v.18: load current (top trace, 20 a/div., 20 ms/div.) into a 10 m ? short circuit during restart, at vin = 24v. bottom trace (20 a/div., 2 ms/div.) is an expansion of the on-time por- tion of the top trace.
mcd10004 rev. 1.3, 19-oct-09 page 63 of 70 www.power-one.com asq24 dc-dc converter series data sheet 18 to 36 vdc input; 1.0 to 12 vdc output electrical specifications: asq24t/s15010 (1.0 volt out) conditions: t a =25oc, airflow=300 lfm (1.5 m/s), vin=24vdc, vout=1.0 vdc unless otherwise specified. parameter notes min typ max units input characteristics maximum input current 15 adc, 1.0 vdc out @ 18 vdc in 1.1 adc input stand-by current vin = 24v, converter disabled 2.6 madc input no load current (0 load on the output) vin = 24v, converter enabled 43 madc input reflected-ripple current 25mhz bandwidth 7.5 ma pk-pk input voltage ripple rejection 120hz tbd db output characteristics output voltage set point (no load) 0.990 1.000 1.010 vdc output regulation over line 1 2 mv over load 1 3 mv output voltage range over line, load and temperature 2 0.985 1.015 vdc output ripple and noise - 25mhz bandwidth full load + 10 f tantalum + 1 f ceramic 30 50 mv pk-pk external load capacitance plus full load (resistive) 15,000 f output current range 0 15 adc current limit inception non-latching 18 20 adc peak short-circuit current non-latching. short=10m ? . 30 40 a rms short-circuit current non-latching 5.3 arms dynamic response load change 25% of iout max, di/dt = 0.1 a/ s co = 1 f ceramic 80 mv di/dt = 5 a/ s co = 450 f tant. + 1 f ceramic 140 mv setting time to 1% 180 s efficiency 100% load 79 % 50% load 79 % additional notes: 2. -40oc to 85oc
mcd10004 rev. 1.3, 19-oct-09 page 64 of 70 www.power-one.com asq24 dc-dc converter series data sheet 18 to 36 vdc input; 1.0 to 12 vdc output asq24t/s15010 (1.0 volt out) ambient temperature [c] 20 30 40 50 60 70 80 90 load current [adc] 0 5 10 15 20 500 lfm (2.5 m/s) 400 lfm (2.0 m/s) 300 lfm (1.5 m/s) 200 lfm (1.0 m/s) 100 lfm (0.5 m/s) 30 lfm (0.15 m/s) fig. 1.0v.1: available load current vs. ambient air temperature and airflow rates for asq24t15010 converter with b height pins mounted vertically with vin = 24v, air flowing from pin 3 to pin 1 and maximum fet temperature ? 120 ? c. ambient temperature [c] 20 30 40 50 60 70 80 90 load current [adc] 0 5 10 15 20 500 lfm (2.5 m/s) 400 lfm (2.0 m/s) 300 lfm (1.5 m/s) 200 lfm (1.0 m/s) 100 lfm (0.5 m/s) 30 lfm (0.15 m/s) fig. 1.0v.3: available load current vs. ambient temperature and airflow rates for asq24s15010 converter mounted verti- cally with vin = 24v, air flowing from pin 3 to pin 1 and maxi- mum fet temperature ? 120 ? c. ambient temperature [c] 20 30 40 50 60 70 80 90 load current [adc] 0 5 10 15 20 500 lfm (2.5 m/s) 400 lfm (2.0 m/s) 300 lfm (1.5 m/s) 200 lfm (1.0 m/s) 100 lfm (0.5 m/s) 30 lfm (0.15 m/s) fig. 1.0v.2: available load current vs. ambient air temperature and airflow rates for asq24t15010 converter with b height pins mounted horizontally with vin = 24v, air flowing from pin 3 to pin 1 and maximum fet temperature ? 120 ? c. ambient temperature [c] 20 30 40 50 60 70 80 90 load current [adc] 0 5 10 15 20 500 lfm (2.5 m/s) 400 lfm (2.0 m/s) 300 lfm (1.5 m/s) 200 lfm (1.0 m/s) 100 lfm (0.5 m/s) 30 lfm (0.15 m/s) fig. 1.0v.4: available load current vs. ambient temperature and airflow rates for asq24s15010 converter mounted hori- zontally with vin = 24v, air flowing from pin 3 to pin 1 and maximum fet temperature ? 120 ? c.
mcd10004 rev. 1.3, 19-oct-09 page 65 of 70 www.power-one.com asq24 dc-dc converter series data sheet 18 to 36 vdc input; 1.0 to 12 vdc output asq24t/s15010 (1.0 volt out) load current [adc] 0246810121416 efficiency 0.65 0.70 0.75 0.80 0.85 0.90 0.95 36 v 24 v 18 v fig. 1.0v.5: efficiency vs. load current and input voltage for asq24t/s15010 converter mounted vertically with air flowing from pin 3 to pin 1 at a rate of 300 lfm (1.5 m/s) and ta = 25 ? c. load current [adc] 0246810121416 power dissipation [w] 0.00 1.00 2.00 3.00 4.00 5.00 6.00 36 v 24 v 18 v fig. 1.0v.7: power dissipation vs. load current and input volt- age for asq24t/s15010 converter mounted vertically with air flowing from pin 3 to pin 1 at a rate of 300 lfm (1.5 m/s) and ta = 25 ? c. load current [adc] 0246810121416 efficiency 0.65 0.70 0.75 0.80 0.85 0.90 0.95 70 c 55 c 40 c fig. 1.0v.6: efficiency vs. load current and ambient tempera- ture for asq24t/s15010 converter mounted vertically with vin = 24v and air flowing from pin 3 to pin 1 at a rate of 200 lfm (1.0 m/s). load current [adc] 0246810121416 power dissipation [w] 0.00 1.00 2.00 3.00 4.00 5.00 6.00 70 c 55 c 40 c fig. 1.0v.8: power dissipation vs. load current and ambient temperature for asq24t/s15010 converter mounted vertically with vin = 24v and air flowing from pin 3 to pin 1 at a rate of 200 lfm (1.0 m/s).
mcd10004 rev. 1.3, 19-oct-09 page 66 of 70 www.power-one.com asq24 dc-dc converter series data sheet 18 to 36 vdc input; 1.0 to 12 vdc output asq24t/s15010 (1.0 volt out) fig. 1.0v.9: turn-on transient at full rated load current (resis- tive) with no output capacitor at vin = 24v, triggered via on/off pin. top trace: on/off signal (5 v/div.). bottom trace: output voltage (0.5 v/ div.). time scale: 1 ms/div. fig. 1.0v.11: output voltage response to load current step- change (3.75 a ? 7.5 a ? 3.75 a) at vin = 24v. top trace: out- put voltage (100 mv/div.). bottom tr ace: load current (5 a/div.). current slew rate: 0.1 a/ ? s. co = 1 ? f ceramic. time scale: 0.2 ms/div. fig. 1.0v.10: turn-on transient at full rated load current (resis- tive) plus 10,000 ? f at vin = 24v, triggered via on/off pin. top trace: on/off signal (5 v/di v.). bottom trace: output volt- age (0.5 v/div.). time scale: 1 ms/div. fig. 1.0v.12: output voltage response to load current step- change (3.75 a ? 7.5 a ? 3.75 a) at vin = 24v. top trace: out- put voltage (100 mv/div.). bottom tr ace: load current (5 a/div.). current slew rate: 5 a/ ? s. co = 450 ? f tantalum + 1 ? f ce- ramic. time scale: 0.2 ms/div.
mcd10004 rev. 1.3, 19-oct-09 page 67 of 70 www.power-one.com asq24 dc-dc converter series data sheet 18 to 36 vdc input; 1.0 to 12 vdc output asq24t/s15010 (1.0 volt out) fig. 1.0v.13: output voltage ripple (20 mv/div.) at full rated load current into a resistive load with co = 10 ? f tantalum + 1uf ceramic and vin = 24v. time scale: 1 ? s/div. fig. 1.0v.15: input reflected ripple current, i c (100 ma/div.), measured at input terminals at full rated load current and vin = 24v. refer to fig. 1.0v.14 fo r test setup. time scale: 1 ? s/div. vout v source i s i c 1 ? f ceramic capacitor 10 ? h source inductance semi q tm family dc/dc converter 33 ? f esr <1 electrolytic capacitor fig. 1.0v.14: test setup for measuring input reflected ripple currents, i c and i s . fig. 1.0v.16: input reflected ripple current, i s (10 ma/div.), measured through 10 ? h at the source at full rated load current and vin = 24v. refer to fig. 1.0v.14 for test setup. time scale: 1 ? s/div.
mcd10004 rev. 1.3, 19-oct-09 page 68 of 70 www.power-one.com asq24 dc-dc converter series data sheet 18 to 36 vdc input; 1.0 to 12 vdc output asq24t/s15010 (1.0 volt out) 5 20 iout [adc] vout [vdc] 0 0 10 15 1.5 1.0 0.5 fig. 1.0v.17: output voltage vs. load current showing current limit point and converter shutdown point. input voltage has al- most no effect on current limit characteristic. fig. 1.0v.18: load current (top trace, 20 a/div., 20 ms/div.) into a 10 m ? short circuit during restart, at vin = 24v. bottom trace (20 a/div., 2 ms/div.) is an expansion of the on-time por- tion of the top trace.
mcd10004 rev. 1.3, 19-oct-09 page 69 of 70 www.power-one.com asq24 dc-dc converter series data sheet 18 to 36 vdc input; 1.0 to 12 vdc output physical information top view 1 2 3 7 8 6 5 4 side view asq24s pinout (surface mount) top view 1 2 3 7 8 6 5 4 side view asq24t pinout (through-hole) pad/pin connections pad/pin # function 1 vin (+) 2 on/off 3 vin (-) 4 vout (-) 5 sense(-) 6 trim 7 sense(+) 8 vout (+) ht (max. height) cl (min. clearance) height option +0.000 [+0.00] -0.038 [- 0.97] +0.016 [+0.41] -0.000 [- 0.00] a 0.319 [8.10] 0.030 [0.77] b 0.352 [8.94] 0.063 [1.60] c 0.516 [13.11] 0.227 [5.77] d 0.416 [10.57] 0.127 [3.23] e 0.298 [7.57] 0.009 [0.23] pl pin length pin option 0.005 [0.13] a 0.188 [4.77] b 0.145 [3.68] c 0.110 [2.79] a sq24s platform notes ? all dimensions are in inches [mm] ? connector material: copper ? connector finish: tin/lead over nickel converter weight: 0.53 oz [15 g] ? recommended surface-mount pads: min. 0.080? x 0. 112? [2.03 x 2.84] max. 0.092? x 0. 124? [2.34 x 3.15] a sq24t platform notes ? all dimensions are in inches [mm] ? pins 1-3 and 5-7 are ? 0.040? [1.02] with ? 0.078? [1.98] shoulder ? pins 4 and 8 are ? 0.062? [1.57] without shoulder ? pin material: brass ? pin finish: tin/lead over nickel ? converter weight: 0.53 oz [15 g]
mcd10004 rev. 1.3, 19-oct-09 page 70 of 70 www.power-one.com asq24 dc-dc converter series data sheet 18 to 36 vdc input; 1.0 to 12 vdc output converter part numbering scheme product series input voltage mounting scheme rated load current output voltage on/off logic maximum height [ht] pin length [pl] special features asq 24 t 05 080 - n b a 0 one-eighth brick format 18-36 v s ? surface mount t ? through- hole 15 ? 15 a (1.0 ? 3.3 v) 10 ? 10 a (5.0 v) 08 ? 8 a (6.0 v) 05 ? 5.3 a (8.0 v) 04 ? 4 a (12.0 v) 010 ? 1.0 v 012 ? 1.2 v 015 ? 1.5 v 018 ? 1.8 v 020 ? 2.0 v 025 ? 2.5 v 033 ? 3.3 v 050 ? 5.0 v 060 ? 6.0 v 080 ? 8.0 v 120 ? 12.0 v n ? negative p ? positive smt s ? 0.289? through hole a ? 0.319? b ? 0.352? c ? 0.516? d ? 0.416? e ? 0.298? smt 0 ? 0.00? through hole a ? 0.188? b ? 0.145? c ? 0.110? 0 ? std t ? special trim 2 (for 1.2v & 1.0v only) 1. the example above describes p/n asq24t05080-nba0: 18-36 v i nput, through-hole mounting, 5.3 a @ 8.0v output, negative on/off logic, a maximum height of 0.352?, and a through the board pin length of 0.188?. please consult factory regarding availability of a sp ecific version. 2. for definitions, operation, and associated trim equations for a ll trim options, please refer to application note 103, trim f eature for isolated dc-dc converters. model numbers highlighted in yellow or s haded are not recommended for new designs. nuclear and medical applications - power-one products are not des igned, intended for use in, or aut horized for use as critical components in life support systems, equipment used in hazardous env ironments, or nuclear control systems without the express written consent of th e respective divisional president of power-one, inc. technical revisions - the appearance of products, including sa fety agency certifications pictured on labels, may change dependi ng on the date manu- factured. specifications are subject to change without notice.

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