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product # mcots-c-48-1r8-sm phone 1-888-567-9596 www.synqor.com doc.# 005-0005425 rev. b 11/02/09 page 1 mcots-c-48-1r8-sm single output sixteenth-brick the milqor series of mil-cots dc/dc converters brings synqors field proven high-efficiency synchronous rectification technology to the military/aerospace industry. synqors ruggedized encased packaging approach ensures survivability in demanding environments. compatible with the industry standard format, these converters operate at a fixed frequency, and follow conservative component derating guidelines. they are designed and manufactured to comply with a wide range of military standards. full power operation: -55c to +100c mil-cots m ilitary cots dc/dc c onverter designed and manufactured in the usa 34-75v 34-100v 1.8v 25a 84% @ 12.5a / 84% @ 25a continuous input transient input output output effciency protection features ? input under-voltage lockout ? output current limit and short circuit protection ? active back bias limit ? output over-voltage protection ? thermal shutdown screening/qualification mcots-c-48-1r8-sm-n-m dc/dc converter 48v in 1.8v out @ 25a ? as9100 and iso 9001:2000 certifed facility ? qualifcation consistent with mil-std-883 ? available with standard or military grade screening ? pre-cap inspection per ipc-610, class iii ? temperature cycling per mil-std-883, method 1010, condition b, 10 cycles ? burn-in at 100c baseplate temperature ? final visual inspection per mil-std-2008 ? full component traceability operational features mechanical features control features safety features ? high effciency, 84% at full rated load current ? operating input voltage range: 34-75v ? fixed frequency switching provides predictable emi ? no minimum load requirement ? on/off control referenced to input return ? remote sense for the output voltage ? output voltage trim range of +10%, -10% ? 2250v, 30 m? input-to-output isolation ? certifed 60950-1 requirement for basic insulation (see standards and qualifcations page) ? industry standard sixteenth-brick pin-out confguration ? size: 1.04 x 1.44 x 0.50 (26.3 x 36.5 x 12.7 mm) ? total weight: 1.14oz (32.3g) ? flanged baseplate version available
mcots-c-48-1r8-sm single output sixteenth-brick output: current: technical specification product # mcots-c-48-1r8-sm phone 1-888-567-9596 www.synqor.com doc.# 005-0005425 rev. b 11/02/09 page 2 mcots-c-48-1r8-sm 1.8v 25a block diagram typical connection diagram positive input input return positive output output retun primary control secondary control uvlo on / off current sense current limt - sense + sense trim i s o l a t i o n b a r r i e r gate control gate control gate driver gate driver v i n external input filter trim v in( + ) i l oa d c l oa d v out(+ ) r trim-up or r trim-down v sense( + ) on/off v in( _ ) v out( _ ) v sense( _ ) electrolytic capacitor
mcots-c-48-1r8-sm single output sixteenth-brick mcots-c-48-1r8-sm output: current: technical specification product # mcots-c-48-1r8-sm phone 1-888-567-9596 www.synqor.com doc.# 005-0005425 rev. b 11/02/09 page 3 mcots-c-48-1r8-sm 1.8v 25a mcots-c-48-1r8-sm electrical characteristics ta = 25 c, vin = 48vdc unless otherwise noted; full operating temperature range is -55 c to +100 c baseplate temperature with appropriate power derating. specifcations subject to change without notice. parameter min. typ. max. units notes & conditions absolute maximum ratings input voltage non-operating 100 v continuous operating 75 v continuous operating transient protection 100 v 100 ms isolation voltage input to output 2250 v dc input to base-plate 2250 v dc output to base-plate 2250 v dc operating temperature -55 100 c baseplate temperature storage temperature -65 135 c voltage at on/off input pin -2 8 v input characteristics operating input voltage range 34 48 75 v input under-voltage lockout turn-on voltage threshold 31.2 32.5 33.8 v turn-off voltage threshold 28.9 30.5 32.2 v lockout voltage hysteresis 2.0 v recommended external input capacitance 100 f typical esr 0.1-0.2 input filter component values (l\c) 1.0\2.35 h\f internal values; see figure e maximum input current 2.1 a vin min; trim up; in current limit no-load input current 55 69 ma disabled input current 10 14 ma response to input transient 0.05 v 1000 v/ms; see figure 6 input terminal ripple current 35 ma rms recommended input fuse 20 a fast acting external fuse recommended output characteristics output voltage set point 1.782 1.8 1.818 v output voltage regulation over line 0.1 0.3 % over load 0.1 0.3 % over temperature -27 27 mv total output voltage range 1.755 1.845 v over sample, line, load, temperature & life output voltage ripple and noise 20 mhz bandwidth; see note 1 peak-to-peak 0 30 60 mv full load rms 6 10 mv full load operating output current range 0 25 a submect to thermal derating; see note 4 output dc current-limit inception 27.5 30 32.5 a back-drive current limit while enabled 1.9 a negative current drawn from output back-drive current limit while disabled 2 ma negative current drawn from output maximum output capacitance 10000 f vout nominal at full load (resistive); see note 2 output voltage during load current transient step change in output current (0.1 a/s) 70 mv 50% to 75% to 50% iout max settling time 40 s to within 1% vout nom output voltage trim range -10 10 % across pins 8&4; figure c; see note 3 output voltage remote sense range 10 % across pins 8&4 output over-voltage protection 2.0 2.2 2.5 v over full temp range efficiency 100% load 84 % see figure 1 for effciency curve 50% load 84 % see figure 1 for effciency curve note 1: output is terminated with 1 f ceramic and 22 f low-esr tantalum capacitors. for applications requiring reduced output voltage ripple and noise, consult synqor applications support (e-mail: mqnbofae@synqor.com) note 2: recommended minimum output capacitance is 100 f note 3: trim-up range is limited below 10% at low line and full load. contact synqor applications support for more detail (e-mail: mqnbofae@synqor. com)
output: current: technical specification product # mcots-c-48-1r8-sm phone 1-888-567-9596 www.synqor.com doc.# 005-0005425 rev. b 11/02/09 page 4 mcots-c-48-1r8-sm 1.8v 25a mcots-c-48-1r8-sm electrical characteristics ta = 25 c, vin = 48vdc unless otherwise noted; full operating temperature range is -55 c to +100 c baseplate temperature with appropriate power derating. specifcations subject to change without notice. parameter min. typ. max. units notes & conditions dynamic characteristics turn-on transient turn-on time 35 ms full load, vout=90% nom. start-up inhibit time 180 200 250 ms figure f; see note 1 power-up inhibit time 2 ms figure f output voltage overshoot 0 % maximum output capacitance isolation characteristics isolation voltage (dielectric strength) see absolute maximum ratings isolation resistance 30 m isolation capacitance (input to output) 1000 pf see note 2 temperature limits for power derating curves semiconductor junction temperature 125 c package rated to 150 c board temperature 125 c ul rated max operating temp 130 c transformer temperature 125 c maximum baseplate temperature, tb 100 c feature characteristics switching frequency 350 khz on/off control off-state voltage 2.4 8 v on-state voltage -2 0.8 on/off control application notes figures a & b pull-up voltage 5 v pull-up resistance 10 k over-temperature shutdown otp trip point 125 c average pcb temperature over-temperature shutdown restart hysteresis 10 c reliability characteristics calculated mtbf (telcordia) tr-nwt-000332 tbd 10 6 hrs. 80% load, 200lfm, 40 c ta calculated mtbf (mil-217) mil-hdbk-217f tbd 10 6 hrs. 80% load, 200lfm, 40 c ta field demonstrated mtbf tbd 10 6 hrs. note 1: maximum value is 400ms for dc current limit and short circuit fault conditions note 2: higher values of isolation capacitance can be added external to the module standards compliance parameter notes & conditions standards compliance ul 60950-1:2003 basic insulation can/csa-c22.2 no. 60950-1:2003 en60950-1:2001 note: an external input fuse must always be used to meet these safety requirements. contact synqor for offcial safety certifcates on new releases or download from the synqor website.
mcots-c-48-1r8-sm output: current: technical specification product # mcots-c-48-1r8-sm phone 1-888-567-9596 www.synqor.com doc.# 005-0005425 rev. b 11/02/09 page 5 mcots-c-48-1r8-sm 1.8v 25a 60 65 70 75 80 85 90 95 100 0 5 10 15 20 25 load current (a) efficiency (%) 36vin 48 vin 75 vin figure 1: efficiency at nominal output voltage vs. load current for minimum, nominal, and maximum input voltage at 25 c. figure 2: efficiency at nominal output voltage and 60% rated power vs. case temperature for minimum, nominal, and maximum input voltage. figure 3: power dissipation at nominal output voltage vs. load current for minimum, nominal, and maximum input voltage at t case =25 c. figure 4: power dissipation at nominal output voltage and 60% rated power vs. case temperature for minimum, nominal, and maximum input voltage. figure 6: output voltage vs. load current showing typical current limit curves. see current limit section in the application notes. 60 65 70 75 80 85 90 95 100 -55oc 25oc 100oc case temperature (oc) efficiency (%) 34 vin 48 vin 75 vin 0 2 4 6 8 10 12 - 55 oc 25 oc 100 oc case temperature ( oc ) power dissipation (w) 34 vin 48 vin 75 vin 0 2 4 6 8 10 12 0 5 10 15 20 25 load current (a) power dissipation (w) 36vin 48 vin 75 vin 0 20 40 60 80 100 120 0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 load current (%) output voltage (%) 16 vin 28 vin 40 vin figure 5: load current (10a/div) as a function of time (2ms/div and 100ms/div) when the converter attempts to turn on into a 10 m? short circuit.
output: current: technical specification product # mcots-c-48-1r8-sm phone 1-888-567-9596 www.synqor.com doc.# 005-0005425 rev. b 11/02/09 page 6 mcots-c-48-1r8-sm 1.8v 25a figure 9: input terminal current ripple, i c , at full rated output current and nominal input voltage with synqor mcots flter module (50 ma/div). bandwidth: 20mhz. see figure 17. figure 10: output voltage ripple, vout, at nominal input voltage and rated load current (5 mv/div). load capacitance: 1f ceramic capacitor and 10f tantalum capacitor. bandwidth: 10 mhz. see figure 17. figure 12: output voltage response to step-change in input voltage (250v/ms). load cap: 100 f electrolytic output capacitance. ch 1: vout (100mv/div), ch 2: vin (50v/div). figure 11: output voltage response to step-change in load current (50%- 75%-50% of iout(max); di/dt = 0.1 a/s). load cap: 1 f ceramic and 15 f tantalum capacitors. ch 1: vout (100mv/div), ch 2: iout (10a/div). figure 8: turn-on transient at full resistive load and zero output capacitance initiated by vin. ena1 and ena2 both previously high. ch 1: vout (50v/div). ch 3: vin (0.5v/div). figure 7: typical startup waveform. input voltage pre-applied, on/off pin on ch 1.
mcots-c-48-1r8-sm output: current: technical specification product # mcots-c-48-1r8-sm phone 1-888-567-9596 www.synqor.com doc.# 005-0005425 rev. b 11/02/09 page 7 mcots-c-48-1r8-sm 1.8v 25a figure 13: magnitude of incremental output impedance (z out = v out / i out ) for minimum, nominal, and maximum input voltage at full rated power. figure 14: magnitude of incremental forward transmission (ft = v out / v in ) for minimum, nominal, and maximum input voltage at full rated power. figure 15: magnitude of incremental reverse transmission (rt = i in / i out ) for minimum, nominal, and maximum input voltage at full rated power. figure 16: magnitude of incremental input impedance (z in = v in /i in ) for minimum, nominal, and maximum input voltage at full rated power. figure 17: test set-up diagram showing measurement points for input terminal ripple current (figure 9) and output voltage ripple (figure 10). dc/dc converter v source i c v out 0.0001 0.001 0.01 0.1 1 10 100 1,000 10,000 100,000 hz output impedance (ohms) 35vin 48vin 75vin 0.1 1 10 100 1000 10000 10 100 1,000 10,000 100,000 hz input impedance (ohms) 35vin 48vin 75vin -120 -100 -80 -60 -40 -20 0 10 100 1,000 10,000 100,000 hz forward transmission (db) 35vin 48vin 75vin -55 -50 -45 -40 -35 -30 -25 -20 -15 -10 10 100 1,000 10,000 100,000 hz reverse transmission (db) 35vin 48vin 75vin 4.7 h source impedance 100 f, 0.2 ? esr electrolytic capacitor 10 f, 100m? esr tantalum capacitor 1 f ceramic capacitor
output: current: technical specification product # mcots-c-48-1r8-sm phone 1-888-567-9596 www.synqor.com doc.# 005-0005425 rev. b 11/02/09 page 8 mcots-c-48-1r8-sm 1.8v 25a figure a: various circuits for driving the on/off pin. figure b: internal on/off pin circuitry basic operation and features this converter switches at a fixed frequency for predictable emi performance. rectification of the transformers output is accomplished with synchronous rectifiers. these devices, which are mosfets with a very low on-state resistance, dissipate far less energy than schottky diodes. this is the primary reason that the converter has such high efficiency, even at very low output voltages and very high output currents. these converters are offered totally encased to withstand harsh environments and thermally demanding applications. dissipation throughout the converter is so low that it does not require a heatsink for operation in many applications; however, adding a heatsink provides improved thermal derating performance in extreme situations. this series of converters use the industry standard footprint and pin-out configuration. control features remote on/off (pin 2 ): the on/off input, pin 2, permits the user to control when the converter is on or off. this input is referenced to the return terminal of the input bus, vin(-). the on/off signal is active low (meaning that a low turns the converter on). figure a details four possible circuits for driving the on/off pin. figure b is a detailed look of the internal on/ off circuitry. remote sense( + ) (pins 7 and 5) : the sense( + ) inputs correct for voltage drops along the conductors that connect the converters output pins to the load. pin 7 should be connected to vout(+) and pin 5 should be connected to vout(-) at the point on the board where regulation is desired. a remote connection at the load can adjust for a voltage drop only as large as that specified in this datasheet, that is [ vout(+) - vout(-) ] C [v sense(+) - v sense(-) ] < sense range % x vout pins 7 and 5 must be connected for proper regulation of the output voltage. if these connections are not made, the converter will deliver an output voltage that is slightly higher than its specified value. note : the output over-voltage protection circuit senses the voltage across the output (pins 8 and 4) to determine when it should trigger, not the voltage across the converters sense leads (pins 7 and 5). therefore, the resistive drop on the board should be small enough so that output ovp does not trigger, even during load transients. open collector enable circuit remote enable circuit direct logic drive negative logic (permanently enabled) vin( _ ) on/off on/off vin( _ ) on/off 5v vin( _ ) vin( _ ) ttl 5v 50k 10k on/off v in( _ ) 100pf ttl/ cmos on/off
mcots-c-48-1r8-sm output: current: technical specification product # mcots-c-48-1r8-sm phone 1-888-567-9596 www.synqor.com doc.# 005-0005425 rev. b 11/02/09 page 9 mcots-c-48-1r8-sm 1.8v 25a output voltage trim (pin 6) : the trim input permits the user to adjust the output voltage across the sense leads up or down according to the trim range specifications. to decrease the output voltage, the user should connect a resistor between pin 6 and pin 5 (sense(-) input). for a desired decrease of the nominal output voltage, the value of the resistor should be r trim-down = ( 511 ) - 10.22 (k w ) d % where d% = v nominal C v desired x 100% v nominal to increase the output voltage, the user should connect a resistor between pin 6 and pin 7 (sense(+) input). for a desired increase of the nominal output voltage, the value of the resistor should be trim graphs show the relationship between the trim resistor value and rtrim-up and rtrim-down, showing the total range the output voltage can be trimmed up or down. note : the trim feature does not affect the voltage at which the output over-voltage protection circuit is triggered. trimming the output voltage too high may cause the over-voltage protection circuit to engage, particularly during transients. it is not necessary for the user to add capacitance at the trim pin. the node is internally bypassed to eliminate noise. total dc variation of v out : for the converter to meet its full specifications, the maximum variation of the dc value of v out , due to both trimming and remote load voltage drops, should not be greater than that specified for the output voltage trim range. protection features input under-voltage lockout : the converter is designed to turn off when the input voltage is too low, helping avoid an input system instability problem, described in more detail in the application note titled input system instability on our website. the lockout circuitry is a comparator with dc hysteresis. when the input voltage is rising, it must exceed the typical turn- on voltage threshold value (listed on the specifications page) before the converter will turn on. once the converter is on, the input voltage must fall below the typical turn-off voltage threshold value before the converter will turn off. output current limit : if the output current exceeds the output current limit threshold, the converter turns off. the converter then enters a hiccup mode where it repeatedly turns on and off with a 350ms (typical) off time at small duty cycle until the short circuit condition is removed. this prevents excessive heating of the converter or the load board. output over-voltage limit : if the voltage across the output pins exceeds the output over-voltage protection threshold, the converter will immediately stop switching. this prevents damage to the load circuit due to 1) excessive series resistance in output current path from converter output pins to sense point, 2) a release of a short-circuit condition, or 3) a release of a current limit condition. load capacitance determines exactly how high the output voltage will rise in response to these conditions. after 200 ms the converter will automatically restart. over-temperature shutdown : a temperature sensor on the converter senses the average temperature of the module. the thermal shutdown circuit is designed to turn the converter off when the temperature at the sensed location reaches the over-temperature shutdown value. it will allow the converter to turn on again when the temperature of the sensed location falls by the amount of the over-temperature shutdown restart hysteresis value. r trim-up (k w ) where v out = nominal output voltage 511 _ 10.22 5.11v out x ( 100+ d % ) 1.225 d % d % ) = ( _ figure c: trim graph for trim-up, trim down. 10 100 1,000 10,000 0 1 2 3 4 5 6 7 8 9 10 trim resistance (k ?) % increase in vout % decrease in vout
output: current: technical specification product # mcots-c-48-1r8-sm phone 1-888-567-9596 www.synqor.com doc.# 005-0005425 rev. b 11/02/09 page 10 mcots-c-48-1r8-sm 1.8v 25a application considerations figure d: typical application circuit (negative logic unit, permanently enabled). figure e: internal input filter diagram v i n external input filter trim v in( + ) i l oa d c l oa d v out(+ ) r trim-up or r trim-down v sense( + ) on/off v in( _ ) v out( _ ) v sense( _ ) electrolytic capacitor input system instability: this condition can occur because any dc-dc converter appears incrementally as a negative resistance load. a detailed application note titled input system instability is available on the synqor website which provides an understanding of why this instability arises, and shows the preferred solution for correcting it. application circuits: figure d provides a typical circuit diagram which details the input filtering and voltage trimming. input filtering and external capacitance: figure e provides a diagram showing the internal input filter components. this filter dramatically reduces input terminal ripple current, which otherwise could exceed the rating of the converter's external electrolytic input capacitor. the recommended external input capacitance is specified in the input characteristics section on the electrical characteristics page. more detailed information is available in the application note titled emi characteristics on the synqor website. l v in( + ) v in( _ ) c v out(+) v out(-) internal input filter converter
mcots-c-48-1r8-sm output: current: technical specification product # mcots-c-48-1r8-sm phone 1-888-567-9596 www.synqor.com doc.# 005-0005425 rev. b 11/02/09 page 11 mcots-c-48-1r8-sm 1.8v 25a startup inhibit period: the startup inhibit period ensures that the converter will remain off for approximately 200 ms when it is shut down for any reason. when an output short is present, this generates a hiccup mode, which prevents the converter from overheating. in all, there are six ways that the converter can be shut down, initiating a startup inhibit period: ? input under-voltage lockout ? output over-voltage protection ? over temperature shutdown ? current limit ? short circuit protection ? turned off by the on/off input figure f shows three turn-on scenarios, where a startup inhibit period is initiated at t 0 , t 1 , and t 2 : before time t 0 , when the input voltage is below the uvl threshold, the unit is disabled by the input under-voltage lockout feature. when the input voltage rises above the uvl threshold, the input under-voltage lockout is released, and a startup inhibit period is initiated. at the end of this delay, the on/off pin is evaluated, and since it is active, the unit turns on. at time t 1 , the unit is disabled by the on/off pin, and it cannot be enabled again until the startup inhibit period has elapsed. when the on/off pin goes high after t 2 , the startup inhibit period has elapsed, and the output turns on within the typical turn-on time. thermal considerations: the maximum operating base-plate temperature, t b , is 100 oc. as long as the users thermal system keeps t b < 100 oc, the converter can deliver its full rated power. a power derating curve can be calculated for any heatsink that is attached to the base-plate of the converter. it is only necessary to determine the thermal resistance, r th ba , of the chosen heatsink between the base-plate and the ambient air for a given airflow rate. this information is usually available from the heatsink vendor. the following formula can the be used to determine the maximum power the converter can dissipate for a given thermal condition if its base-plate is to be no higher than 100 oc. p max = 100 oc - t a diss r th ba this value of power dissipation can then be used in conjunction with the data shown in figure 2 to determine the maximum load current (and power) that the converter can deliver in the given thermal condition. figure f: startup inhibit period (turn-on time not to scale) under-voltage lockout turn- on threshold on/off (neg logic) v out v in 200ms 200ms 2ms (typical power-up inhibit period) t 0 t 1 t 2 t on on on off off (typical turn on time) ms
output: current: technical specification product # mcots-c-48-1r8-sm phone 1-888-567-9596 www.synqor.com doc.# 005-0005425 rev. b 11/02/09 page 12 mcots-c-48-1r8-sm 1.8v 25a mechanical drawing C normal heatsink option notes 1) baseplate flatness tolerance is 0.004" (.10mm) tir for surface. 2) pins 1-3, 5-7 are 0.040 (1.02mm) diameter, with 0.080 (2.03mm) diameter standoff shoulders. 3) pins 4 and 8 are 0.062 (1.57 mm) diameter with 0.100" (2.54 mm) diameter standoff shoulders. 4) all pins: material C copper alloy; finish C matte tin over nickel plate 5) undimensioned components are shown for visual reference only. 6) weight: 1.14oz (32.3g) typical 7) all dimensions in inches (mm) tolerances: x.xx +/-0.02 in. (x.x +/-0.5mm) x.xxx +/-0.010 in. (x.xx +/-0.25mm) 8) workmanship: meets or exceeds ipc-a610 class ii 9) recommended pin length is 0.03 (0.76mm) greater than the pcb thickness. pin designations pin name function 1 vin(+) positive input voltage 2 on/off ttl input to turn converter on and off, referenced to vin(C), with internal pull up. 3 vin(C) negative input voltage 4 vout(C) negative output voltage 5 sense(C) negative remote sense 1 6 trim output voltage trim 2 7 sense(+) positive remote sense 3 8 vout(+) positive output voltage notes: 1) sense(C) should be connected to vout(C) either remotely or at the converter. 2) leave trim pin open for nominal output voltage. 3) sense(+) should be connected to vout(+) either remotely or at the converter. 1.036.020 (26.310.5) .150 (3.81) .600 (15.24) .450 (11.43) .300 (7.62) .600 (15.24) .300 (7.62) .218.020 (5.540.5) overall height 0.500.025 (12.70.63) side view 0.18 (4.6) .143.020 (3.630.5) 1.436.020 (36.470.5) 1.10 (27.9) top view 4 5 6 7 8 1 2 3
mcots-c-48-1r8-sm output: current: technical specification product # mcots-c-48-1r8-sm phone 1-888-567-9596 www.synqor.com doc.# 005-0005425 rev. b 11/02/09 page 13 mcots-c-48-1r8-sm 1.8v 25a .017 .020 [ 0,43 0,5 ] .21 [ 5,3 ] .94 [ 23,9 ] .14 [ 3,6 ] .218 .020 [ 5,54 0,5 ] .350 .020 [ 8,89 0,5 ] .450 .020 [ 11,43 0,5 ] ] 1.12 [ 28,3 ] 1.436 [ 36,47 ] .13 [ 3,2 ] bottomside clearance .010 [ 0,25 ] .300 [ 7,62 ] .600 [ 15,24 ] top view 1 1 2 3 mechanical drawing C flanged heatsink option notes 1) applied torque per screw should not exceed 5in-lb (3in-lb recommended). 2) baseplate flatness tolerance is 0.01 (.25mm) tir for surface. 3) pins 1-3, 5-7 are 0.040 (1.02mm) diameter, with 0.080 (2.03mm) diameter standoff shoulders. 4) pins 4 and 8 are 0.062 (1.57 mm) diameter with 0.100" (2.54 mm) diameter standoff shoulders. 5) all pins: material C copper alloy; finish C matte tin over nickel plate 6) weight: 1.22 oz (34.6g) typical 7) undimensioned components are shown for visual reference only. 8) all dimensions in inches (mm) tolerances: x.xx +/-0.02 in. (x.x +/-0.5mm) x.xxx +/-0.010 in. (x.xx +/-0.25mm) 9) workmanship: meets or exceeds ipc-a610 class ii 10) recommended pin length is 0.03 (0.76mm) greater than the pcb thickness. 11) a thermal interface material is required to assure proper heat transfer from the flanged baseplate to the cooling surface. thermal grease, conductive pads, compounds, and other similar products are available from many heatsink manufacturers. pin designations pin name function 1 vin(+) positive input voltage 2 on/off ttl input to turn converter on and off, referenced to vin(C), with internal pull up. 3 vin(C) negative input voltage 4 vout(C) negative output voltage 5 sense(C) negative remote sense 1 6 trim output voltage trim 2 7 sense(+) positive remote sense 3 8 vout(+) positive output voltage notes: 1) sense(C) should be connected to vout(C) either remotely or at the converter. 2) leave trim pin open for nominal output voltage. 3) sense(+) should be connected to vout(+) either remotely or at the converter.
output: current: technical specification product # mcots-c-48-1r8-sm phone 1-888-567-9596 www.synqor.com doc.# 005-0005425 rev. b 11/02/09 page 14 mcots-c-48-1r8-sm 1.8v 25a test name details #tested (# failed) consistent with mil-std-883f method consistent with mil-std-883f method 5005 life testing visual, mechanical and electrical test - ing before, during and after 1000 hour burn-in @ full load 15 (0) method 1005.8 shock-vibration visual, mechanical and electrical test - ing before, during and after shock and vibration tests 5 (0) mil-std-202, method 1 humidity +85?c, 85% rh, 1000 hours, 2 min - utes on/6 hours off 8 (0) method 1004.7 temperature cycling 500 cycles of -55?c to +100?c (30 minute dwell at each temperature 10 (0) method 1010.8 condition a solderability 15 pins 15 (0) method 2003 dmt -65?c to +110?c across full line and load specifcations in 5?c steps 7 (0) mil-cots qualifcation mil-cots screening screening process description standard military (mil grade) baseplate operating temperature -55?c to +100?c -55?c to +100?c storage temperature -65?c to +135?c -65?c to +135?c pre-cap inspection ipc-610, class iii temperature cyclling method 1010, condition b, 10 cycles burn-in 100?c baseplate 12 hours 96 hours final electrical test 100% 25?c -55?c, +25?c, +100?c final visual inspection mil-std-2008
mcots-c-48-1r8-sm output: current: technical specification product # mcots-c-48-1r8-sm phone 1-888-567-9596 www.synqor.com doc.# 005-0005425 rev. b 11/02/09 page 15 mcots-c-48-1r8-sm 1.8v 25a warranty synqor offers a t wo ( 2 ) year limited warranty. complete warranty information is listed on our website or is available upon request from synqor. information furnished by synqor is believed to be accurate and reliable. however, no responsibility is assumed by synqor for its use, nor for any infringements of patents or other rights of third parties which may result from its use. no license is granted by implication or otherwise under any patent or patent rights of synqor. contact synqor for further information: phone : 978-849-0600 toll free : 888-567-9596 fax : 978-849-0602 e-mail : mqnbofae @synqor.com web : www.synqor.com address : 155 swanson road boxborough, ma 01719 usa family product input voltage output voltage package heatsink option screening level mcots c: converter f: filter 28: 16-40v 48: 34-75v 270: 155-425v 1r2: 1.2v 1r5: 1.5v 1r8: 1.8v 2r5: 2.5v 3r3: 3.3v 05: 5v 07: 7v 12: 12v 15: 15v 24: 24v 28: 28v 40: 40v 48: 48v 50: 50v p: passive t: active ft: full brick hp: half brick peta hz: half brick zeta qt: quarter brick eg: eighth brick sm: sixteenth brick n: normal f: flanged s: standard m: m-grade example mcots-c-48-1r8-sm-n-s application notes a variety of application notes and technical white papers can be downloaded in pdf format from our website . ordering information/ part numbering patents synqor holds the following u.s. patents, one or more of which apply to each product listed in this brochure. additional patent applications may be pending or fled in the future. 5,999,417 6,222,742 6,545,890 6,577,109 6,594,159 6,731,520 6,894,468 6,896,526 6,927,987 7,050,309 7,072,190 7,085,146 7,119,524 7,269,034 7,272,021 7,272,023 7,558,083 7,564,702

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Price & Availability of MCOTS-C-48-1R8-SM-F-S

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