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technical specification product # iq4hxxxhtxxx phon e 1-888-567-9596 www.synqor.com doc.# 005-0005270 rev. 2 05/13 / 10 page 1 iq4hxxxhtxxx 180-425v 475v 2.5-48v 300w 4250v dc half-brick continuous input transient input outputs max power reinforced insulation dc-dc converter the inqor half-brick converter series is composed of next-generation, board-mountable, isolated (reinforced insulation ), fxed switching frequency dc-dc converters that use synchronous rectifcation to achieve extremely high power conversion effciency. each module is supplied completely encased to provide protection from the harsh environments seen in many industrial and transportation applications. operational features ? high effciency, 84%-88% at full rated load current ? delivers full power with minimal derating - no heatsink required ? operating input voltage range: 180-425v ? fixed frequency switching provides predictable emi ? no minimum load requirement mechanical features ? industry standard half-brick pin-out confguration ? size: 2.486" x 2.386" (63.1 x 60.6 mm) ? total height: 0.512 (13.0mm) ? total weight: 4.9oz (139g) control features ? on/off control referenced to input side ? remote sense for the output voltage compensates for output distribution drops ? output voltage trim range of -20%, +10% protection features ? input under-voltage lockout ? output current limit and short circuit protection ? active back bias limit ? output over-voltage protection ? thermal shutdown optional features(full-feature modules) ? active current share for n+1 and parallel applications ? external clock synchronization pin for better emi characteristics ? startup synchronization pin for more consistent startup sequence safety features ? pending ? isolation voltage:4250vdc reinforced insulation ? ul 60950-1 2nd ed, 2007 ? can/csa-c22.2 no. 60950-1:2007 ? en60950-1 ed 2.0 ? ce marked ? iec 61000-4-2 ? rohs compliant (see last page) contents page no. family electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 electrical characteristics (5.0 vout) . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 electrical characteristics (12 vout) . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 electrical characteristics (15 vout) . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 electrical characteristics (24 vout) . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 electrical characteristics (28 vout) . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 electrical characteristics (48 vout) . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 application section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-12 standards and qualifications (all output voltages) . . . . . . . . . . . . . . . . 13 mechanical drawing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 mechanical drawing flanged option . . . . . . . . . . . . . . . . . . . . . . . . . . 15 ordering information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 iq4h050htc50nrs-g 180-425v in 5.0v out @ 50a advanced publication
technical specification product # iq4hxxxhtxxx ph one 1-888-567-9596 www.synqor.com doc.# 005-0005270 rev. 2 05/13 / 10 pa ge 2 iq4hxxxhtxxx iq4h-ht family electrical characteristics ta = 25 c, airfow rate = 300 lfm, vin = 385v dc unless otherwise noted; full operating temperature range is -40 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 600 v continuous operating 425 v continuous operating transient protection 475 v 100 ms transient, square wave isolation voltage input to output 4250 v dc reinforced insulation input to base-plate 2125 v dc basic insulation output to base-plate 2125 v dc basic insulation operating temperature -40 100 c baseplate temperature storage temperature -55 125 c voltage at on/off input pin -2 18 v input characteristics operating input voltage range 180 385 425 v 475v transient for 100 ms; see note 1 input under-voltage lockout turn-on voltage threshold 171.0 174.0 177.0 v turn-off voltage threshold 159 162 165 v lockout voltage hysteresis 10.0 v input over-voltage shutdown 500 v recommended external input capacitance 10 f typical esr 0.1-0.2 input filter component values (l\c) 28\0.408 h\f internal values; see figure e dynamic characteristics turn-on transient turn-on time 45 ms full load, vout=90% nom. start-up inhibit time 180 200 220 ms -40 c to +85 c; figure f output voltage overshoot 0 % maximum output capacitance isolation characteristics isolation voltage (dielectric strength) 3000 v see absolute maximum ratings isolation resistance 100 m isolation capacitance (input to output) n/a 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 510 550 590 khz isolation stage switching freq. is half this on/off control off-state voltage 2.4 18 v on-state voltage -1 0.8 on/off control application notes figures a & b pull-up voltage 5 v pull-up resistance 68.1 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 10 6 hrs. see our website for details note 1: input voltage transient dv/dt=1 v/ us note 2: isolation capacitance can be added external to the module. family electrical characteristics advanced publication
product # iq4hxxxhtxxx ph one 1-888-567-9596 www.synqor.com doc.# 005-0005270 rev. 2 05/13/ 1 0 pa ge 3 technical specification input: 180-425v output: 5.0v current: 50a part no.: iq4h050htx50 iq4h050htx50 electrical characteristics (5.0 vout) ta = 25 c, airfow rate = 300 lfm, vin = 385v dc unless otherwise noted; full operating temperature range is -40 c to +100 c baseplate temperature with appropriate power derating. specifcations subject to change without notice. parameter min. typ. max. units notes & conditions input characteristics maximum input current 2.4 a vin min; trim up; in current limit no-load input current 55 tbd ma disabled input current 5 tbd ma response to input transient tbd v see figure 6 input terminal ripple current tbd ma rms recommended input fuse tbd a fast acting external fuse recommended output characteristics output voltage set point 4.95 5 5.05 v output voltage regulation over line 0.05 0.2 % over load 0.05 0.2 % over temperature 75 75 mv total output voltage range 4.875 5.125 v over sample, line, load, temperature & life output voltage ripple and noise 20 mhz bandwidth; see note 1 peak-to-peak tbd tbd tbd mv full load rms tbd tbd mv full load operating output current range 0 50 a subject to thermal derating output dc current-limit inception tbd 60.0 tbd a output voltage 10% low output dc current-limit shutdown voltage 3 v back-drive current limit while enabled tbd a negative current drawn from output back-drive current limit while disabled tbd ma negative current drawn from output maximum output capacitance 15,000 f vout nominal at full load (resistive load) output voltage during load current transient step change in output current (0.1 a/s) tbd mv 50% to 75% to 50% iout max settling time tbd s to within 1% vout nom output voltage trim range -20 10 % across pins 8&4; common figures 3-5; see note 2 output voltage remote sense range 10 % across pins 8&4 output over-voltage protection 5.9 6.1 6.4 v over full temp range efficiency 100% load 85 % see figure 1 for effciency curve 50% load 86 % see figure 1 for effciency curve note 1: output is terminated with 1 f ceramic and 15 f low-esr tantalum capacitors. for applications requiring reduced output voltage ripple and noise, consult synqor applications support (e-mail: support@synqor.com) note 2: trim-up range is limited below 10% at low line and full load. electrical characteristics (5.0 vout) advanced publication
product # iq4hxxxhtxxx ph one 1-888-567-9596 www.synqor.com doc.# 005-0005270 rev. 2 05/13 / 10 pa ge 4 technical specification iq4h120htx25 electrical characteristics (12 vout) ta = 25 c, airfow rate = 300 lfm, vin = 385v dc unless otherwise noted; full operating temperature range is -40 c to +100 c baseplate temperature with appropriate power derating. specifcations subject to change without notice. parameter min. typ. max. units notes & conditions input characteristics maximum input current 2.2 a vin min; trim up; in current limit no-load input current 50 tbd ma disabled input current 5.1 tbd ma response to input transient tbd v see figure 6 input terminal ripple current tbd ma rms recommended input fuse 5 a fast acting external fuse recommended output characteristics output voltage set point 11.88 12 12.12 v output voltage regulation over line 0.1 0.3 % over load 0.1 0.3 % over temperature -180 180 mv total output voltage range 11.700 12.300 v over sample, line, load, temperature & life output voltage ripple and noise 20 mhz bandwidth; see note 1 peak-to-peak 0 tbd tbd mv full load rms tbd tbd mv full load operating output current range 0 25 a subject to thermal derating output dc current-limit inception tbd 31.0 tbd a output voltage 10% low output dc current-limit shutdown voltage 7.2 v back-drive current limit while enabled 5 a negative current drawn from output back-drive current limit while disabled 3 ma negative current drawn from output maximum output capacitance 5,000 f vout nominal at full load (resistive load) output voltage during load current transient step change in output current (0.1 a/s) tbd mv 50% to 75% to 50% iout max settling time tbd s to within 1% vout nom output voltage trim range -20 10 % across pins 8&4; common figures 3-5; see note 2 output voltage remote sense range 10 % across pins 8&4 output over-voltage protection tbd 14.4 tbd v over full temp range efficiency 100% load 85 % see figure 1 for effciency curve 50% load 85 % see figure 1 for effciency curve note 1: output is terminated with 1 f ceramic and 15 f low-esr tantalum capacitors. for applications requiring reduced output voltage ripple and noise, consult synqor applications support (e-mail: support@synqor.com) note 2: trim-up range is limited below 10% at low line and full load. input: 180-425v output: 12.0v current: 25a part no.: iq4h120htx25 electrical characteristics (12 vout) advanced publication
product # iq4hxxxhtxxx ph one 1-888-567-9596 www.synqor.com doc.# 005-0005270 rev. 2 05/13 / 10 pa ge 5 technical specification input: 180-425v output: 15.0v current: 20a part no.: iq4h150htx20 iq4h150htx20 electrical characteristics (15 vout) ta = 25 c, airfow rate = 300 lfm, vin = 385v dc unless otherwise noted; full operating temperature range is -40 c to +100 c baseplate temperature with appropriate power derating. specifcations subject to change without notice. parameter min. typ. max. units notes & conditions input characteristics maximum input current 2.7 a vin min; trim up; in current limit no-load input current 55 tbd ma disabled input current 5 tbd ma response to input transient tbd v see figure 6 input terminal ripple current tbd ma rms recommended input fuse 5 a fast acting external fuse recommended output characteristics output voltage set point 14.85 15 15.15 v output voltage regulation over line 0.1 0.3 % over load 0.1 0.3 % over temperature -225 225 mv total output voltage range 14.625 15.375 v over sample, line, load, temperature & life output voltage ripple and noise 20 mhz bandwidth; see note 1 peak-to-peak 0 tbd tbd mv full load rms tbd tbd mv full load operating output current range 0 20 a subject to thermal derating output dc current-limit inception tbd 24.0 tbd a output voltage 10% low output dc current-limit shutdown voltage 9 v back-drive current limit while enabled tbd a negative current drawn from output back-drive current limit while disabled tbd ma negative current drawn from output maximum output capacitance 4,000 f vout nominal at full load (resistive load) output voltage during load current transient step change in output current (0.1 a/s) tbd mv 50% to 75% to 50% iout max settling time tbd s to within 1% vout nom output voltage trim range -20 10 % across pins 8&4; common figures 3-5; see note 2 output voltage remote sense range 10 % across pins 8&4 output over-voltage protection tbd 18.3 tbd v over full temp range efficiency 100% load 84 % see figure 1 for effciency curve 50% load 85 % see figure 1 for effciency curve note 1: output is terminated with 1 f ceramic and 15 f low-esr tantalum capacitors. for applications requiring reduced output voltage ripple and noise, consult synqor applications support (e-mail: support@synqor.com) note 2: trim-up range is limited below 10% at low line and full load. electrical characteristics (15 vout) advanced publication
product # iq4hxxxhtxxx ph one 1-888-567-9596 www.synqor.com doc.# 005-0005270 rev. 2 05/13 / 10 pa ge 6 technical specification input: 180-425v output: 24.0v current: 12.5a part no.: iq4h240htx13 iq4h240htx12 electrical characteristics (24 vout) ta = 25 c, airfow rate = 300 lfm, vin = 385v dc unless otherwise noted; full operating temperature range is -40 c to +100 c baseplate temperature with appropriate power derating. specifcations subject to change without notice. parameter min. typ. max. units notes & conditions input characteristics maximum input current 2.7 a vin min; trim up; in current limit no-load input current 55 tbd ma disabled input current 5 tbd ma response to input transient tbd v see figure 6 input terminal ripple current tbd ma rms recommended input fuse 5 a fast acting external fuse recommended output characteristics output voltage set point 23.76 24 24.24 v output voltage regulation over line 0.1 0.3 % over load 0.1 0.3 % over temperature -360 360 mv total output voltage range 23.400 24.600 v over sample, line, load, temperature & life output voltage ripple and noise 20 mhz bandwidth; see note 1 peak-to-peak 0 tbd tbd mv full load rms tbd tbd mv full load operating output current range 0 12.5 a subject to thermal derating output dc current-limit inception tbd 15.3 tbd a output voltage 10% low output dc current-limit shutdown voltage 14.4 v back-drive current limit while enabled tbd a negative current drawn from output back-drive current limit while disabled tbd ma negative current drawn from output maximum output capacitance tbd f vout nominal at full load (resistive load) output voltage during load current transient step change in output current (0.1 a/s) tbd mv 50% to 75% to 50% iout max settling time tbd s to within 1% vout nom output voltage trim range -20 10 % across pins 8&4; common figures 3-5; see note 2 output voltage remote sense range 10 % across pins 8&4 output over-voltage protection tbd 29.3 tbd v over full temp range efficiency 100% load tbd % see figure 1 for effciency curve 50% load tbd % see figure 1 for effciency curve note 1: output is terminated with 1 f ceramic and 15 f low-esr tantalum capacitors. for applications requiring reduced output voltage ripple and noise, consult synqor applications support (e-mail: support@synqor.com) note 2: trim-up range is limited below 10% at low line and full load. electrical characteristics (24 vout) advanced publication
product # iq4hxxxhtxxx ph one 1-888-567-9596 www.synqor.com doc.# 005-0005270 rev. 2 05/13/ 1 0 pa ge 7 technical specification input: 180-425v output: 28.0v current: 10.7a part no.: iq4h280htx11 iq4h280htx11 electrical characteristics (28 vout) ta = 25 c, airfow rate = 300 lfm, vin = 385v dc unless otherwise noted; full operating temperature range is -40 c to +100 c baseplate temperature with appropriate power derating. specifcations subject to change without notice. parameter min. typ. max. units notes & conditions input characteristics maximum input current 2.7 a vin min; trim up; in current limit no-load input current 55 tbd ma disabled input current 5 tbd ma response to input transient tbd v see figure 6 input terminal ripple current tbd ma rms recommended input fuse 5 a fast acting external fuse recommended output characteristics output voltage set point 27.72 28 28.28 v output voltage regulation over line 0.1 0.3 % over load 0.1 0.3 % over temperature -420 420 mv total output voltage range 27.300 28.700 v over sample, line, load, temperature & life output voltage ripple and noise 20 mhz bandwidth; see note 1 peak-to-peak 0 tbd tbd mv full load rms tbd tbd mv full load operating output current range 0 10.7 a subject to thermal derating output dc current-limit inception tbd 13.3 tbd a output voltage 10% low output dc current-limit shutdown voltage 16.8 v back-drive current limit while enabled tbd a negative current drawn from output back-drive current limit while disabled tbd ma negative current drawn from output maximum output capacitance 3,000 f vout nominal at full load (resistive load) output voltage during load current transient step change in output current (0.1 a/s) tbd mv 50% to 75% to 50% iout max settling time tbd s to within 1% vout nom output voltage trim range -20 10 % across pins 8&4; common figures 3-5; see note 2 output voltage remote sense range 10 % across pins 8&4 output over-voltage protection tbd 34.2 tbd v over full temp range efficiency 100% load 87 % see figure 1 for effciency curve 50% load 88 % see figure 1 for effciency curve note 1: output is terminated with 1 f ceramic and 15 f low-esr tantalum capacitors. for applications requiring reduced output voltage ripple and noise, consult synqor applications support (e-mail: support@synqor.com) note 2: trim-up range is limited below 10% at low line and full load. electrical characteristics (28 vout) advanced publication
product # iq4hxxxhtxxx ph one 1-888-567-9596 www.synqor.com doc.# 005-0005270 rev. 2 05/13 / 10 pa ge 8 technical specification iq4h480htx06 electrical characteristics (48 vout) ta = 25 c, airfow rate = 300 lfm, vin = 385v dc unless otherwise noted; full operating temperature range is -40 c to +100 c baseplate temperature with appropriate power derating. specifcations subject to change without notice. parameter min. typ. max. units notes & conditions input characteristics maximum input current 2.7 a vin min; trim up; in current limit no-load input current 55 tbd ma disabled input current 5 tbd ma response to input transient tbd v see figure 6 input terminal ripple current tbd ma rms recommended input fuse 5 a fast acting external fuse recommended output characteristics output voltage set point 47.52 48 48.48 v output voltage regulation over line 0.1 0.3 % over load 0.1 0.3 % over temperature -720 720 mv total output voltage range 46.800 49.200 v over sample, line, load, temperature & life output voltage ripple and noise 20 mhz bandwidth; see note 1 peak-to-peak 0 tbd tbd mv full load rms tbd tbd mv full load operating output current range 0 6.25 a subject to thermal derating output dc current-limit inception tbd 7.5 tbd a output voltage 10% low output dc current-limit shutdown voltage 28.8 v back-drive current limit while enabled tbd a negative current drawn from output back-drive current limit while disabled tbd ma negative current drawn from output maximum output capacitance 1,000 f vout nominal at full load (resistive load) output voltage during load current transient step change in output current (0.1 a/s) tbd mv 50% to 75% to 50% iout max settling time tbd s to within 1% vout nom output voltage trim range -20 10 % across pins 8&4; common figures 3-5; see note 2 output voltage remote sense range 10 % across pins 8&4 output over-voltage protection tbd 58.6 tbd v over full temp range efficiency 100% load 88 % see figure 1 for effciency curve 50% load 88 % see figure 1 for effciency curve note 1: output is terminated with 1 f ceramic and 15 f low-esr tantalum capacitors. for applications requiring reduced output voltage ripple and noise, consult synqor applications support (e-mail: support@synqor.com) note 2: trim-up range is limited below 10% at low line and full load. input: 180-425v output: 48.0v current: 6.25a part no.: iq4h480htx06 electrical characteristics (48 vout) advanced publication
technical specification product # iq4hxxxhtxxx ph one 1-888-567-9596 www.synqor.com doc.# 005-0005270 rev. 2 05/13 / 10 pa ge 9 iq4hxxxhtxxx application section basic operation and features this converter series uses a two-stage power conversion topology. the first stage is a buck-converter that keeps the output voltage constant over variations in line, load, and temperature. the second stage uses a transformer to provide the functions of input/output isolation and voltage step-up or step-down to achieve the output voltage required. both the first stage and the second stage switch 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 uses 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) on/off vin( _ ) on/off on/off vin( _ ) on/off 5v ttl/ cmos vin( _ ) vin( _ ) figure a: various circuits for driving the on/off pin. figure b: internal on/off pin circuitry 5v 124k 68.1k on/off t tl v in (-) 249k 2200p advanced publication advanced publication advanced publication advanced publication
technical specification product # iq4hxxxhtxxx ph one 1-888-567-9596 www.synqor.com doc.# 005-0005270 rev. 2 05/13 / 10 pa ge 10 iq4hxxxhtxxx 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 = ( 90.9 - 0.909 ) (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 r trim-up = ( 100 + % ) * ( v nom - 0.909 ) (k?) % 1.225 where v nom = nominal output voltage 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 0 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 : the maximum current limit remains constant as the output voltage drops. however, once the impedance of the load across the output is small enough to make the output voltage drop below the specified output dc current- limit shutdown voltage, the converter turns off. the converter then enters a hiccup mode where it repeatedly turns on and off at a 4 hz (nominal) frequency with a 20% 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. advanced publication advanced publication advanced publication advanced publication
technical specification product # iq4hxxxhtxxx ph one 1-888-567-9596 www.synqor.com doc.# 005-0005270 rev. 2 05/13 / 10 pa ge 11 iq4hxxxhtxxx application considerations 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 an 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. 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 4 hz 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 : figure d: typical application circuit (negative logic unit, permanently enabled). figure e: internal input filter diagram (component values listed on the specifications page) . v in external input filter trim v in(+) i load c load v out(+) r trim-up or r trim-down v sense(+) on/off v in( _ ) v out( _ ) v sense( _ ) electrolytic capacitor c l v in(+) v in( _ ) advanced publication advanced publication advanced publication advanced publication
technical specification product # iq4hxxxhtxxx ph one 1-888-567-9596 www.synqor.com doc.# 005-0005270 rev. 2 05/13/ 1 0 pa ge 12 iq4hxxxhtxxx application section 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 85 oc. as long as the users thermal system keeps t b < 85 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 85 oc. p max = 85 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. for convenience, figures 3 and 4 provide power derating curves for an encased converter. 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 200ms (typical start-up inhibit period) t 0 t 1 t 2 t 35ms (typical turn on time) on on on off off advanced publication advanced publication advanced publication advanced publication
technical specification product # iq4hxxxhtxxx ph one 1-888-567-9596 www.synqor.com doc.# 005-0005270 rev. 2 05/13 / 10 pa ge 13 iq4hxxxhtxxx standards and qualifications (all output voltages) parameter notes & conditions standards compliance pending ul 60950-1 2nd ed, 2007 reinforced insulation can/csa-c22.2 no. 60950-1:2007 en60950-1 ed 2.0 ce marked 2006/95/ec low voltage directive iec 61000-4-2 esd test, 8 kv - np, 15 kv air - np (normal performance) 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. parameter # units test conditions qualification testing life test 32 95% rated vin and load, units at derating point, 1000 hours vibration 5 10-55 hz sweep, 0.060" total excursion, 1 min./sweep, 120 sweeps for 3 axis mechanical shock 5 100g minimum, 2 drops in x and y axis, 1 drop in z axis temperature cycling 10 -40 c to 100 c, unit temp. ramp 15 c/min., 500 cycles power/thermal cycling 5 toperating = min to max, vin = min to max, full load, 100 cycles design marginality 5 tmin-10 c to tmax+10 c, 5 c steps, vin = min to max, 0-105% load humidity 5 85 c, 85% rh, 1000 hours, continuous vin applied except 5 min/day solderability 15 pins mil-std-883, method 2003 advanced publication
technical specification product # iq4hxxxhtxxx ph one 1-888-567-9596 www.synqor.com doc.# 005-0005270 rev. 2 05/13 / 10 pa ge 14 iq4hxxxhtxxx .400 [10,16 ] .600 [15,24 ] .800 [20,32 ] 1.000 [25,4 ] 1.400 [35,56 ] ]0,5 13,79[ .020 .543 ]10,16[.400 ]17,78[.700 ]25,4[1.000 ]35,56[1.400 2.486 .020 [63,14 0,5] 2.000 [50,8 ] .233 .020 [5,92 0,5] 1.900 [48,26 ] 2.386 .020 [60,6 0,5] 1.90 [48,3 ] .243 .020 [6,17 0,5] .243 .020 [6,17 0,5] overall height ]0,63 12,57[ .025 .495 .005 .015 [0,13 0,38] bottomside clearance .180 [4,57 ] see note 6 m3 threaded insert x4 see notes 1 and 2 top view side view 1 2 a b 3 4 5 6 7 8 9 encapsulated inqor htx 4h mechanical diagram 020-0000176 - 020-0000176 - iq4h hxc mech.pdf notes 1) m3 screws used to bolt unit's baseplate to other surfaces such as heatsink must not exceed 0.100" (2.54mm) depth below the surface of the baseplate. 2) applied torque per screw should not exceed 6in-lb (0.7nm). 3) baseplate flatness tolerance is 0.004" (.10mm) tir for surface. 4) pins 1-4, 6-8, a and b are 0.040" (1.02mm) dia. with 0.080" (2.03mm) dia. standoff shoulders 5) pins 5 and 9 are 0.080" (2.03mm) dia. with .125" (3.18) dia. standoff shoulders 6) other pin extension lengths available 7) all pins: material: copper alloy finish: matte tin over nickel plate 8) undimensioned components are shown for visual reference only 9) weight: 4.9oz (139g) 10) all dimensions in inches(mm) tolerances: x.xxin +/-0.02 (x.xmm +/-0.5mm) x.xxxin +/-0.010 (x.xxmm +/-0.25mm) 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 ishare single wire parallel signal 4 vin(C) negative input voltage 5 vout(C) negative output voltage 6 sense(C) negative remote sense(see note 1) 7 trim output voltage trim (see note 2) 8 sense(+) positive remote sense (see note 3) 9 vout(+) positive output voltage a clock sync clock synchronization b start sync startup synchronization 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. mechanical drawing advanced publication advanced publication
technical specification product # iq4hxxxhtxxx ph one 1-888-567-9596 www.synqor.com doc.# 005-0005270 rev. 2 05/13 / 10 pa ge 15 iq4hxxxhtxxx overall height ]0,63 12,57[ .025 .495 .005 .015 [0,13 0,38] bottomside clearance .180 [4,57 ] see note 6 .125 [3,18 ] .400 [10,16 ] .600 [15,24 ] .800 [20,32 ] 1.000 [25,4 ] 1.400 [35,56 ] .400 [10,16 ] .700 [17,78 ] 1.000 [25,4 ] 1.400 [35,56 ] 1.900 [48,26 ] 2.386 .020 [60,6 0,5] 2 a b 3 4 5 6 7 8 9 1 bottom view side view .01 [0,2] .543 .020 [13,79 0,5] .775 .020 [19,69 0,5] .875 .020 [22,23 0,5] 2.486 .020 [63,14 0,5] 3.15 [80 ] 2.95 [74,9 ] .31 [7,9 ] .96 [24,4 ] 1.61 [40,9 ] .027 .020 [0,69 0,5] 1.87 [47,4 ] use w/ 4-40 or m3 screw (6x) recom. torque 3 in.lb r .065 1,65[ ] top view 1 020-0000177 - 020-0000177 - iq4h hxv mech.pdf notes 1) applied torque per screw should not exceed 6in-lb. (0.7 nm). 2) baseplate fatness tolerance is 0.004" (.10mm) tir for surface. 3) pins 1-4, 6-8 are 0.040 (1.02mm) diameter, with 0.080 (2.03mm) diameter standoff shoulders. 4) pins 5 and 9 are 0.080 (2.03 mm) diameter with 0.125" (3.18 mm) diameter standoff shoulders. 5) other pin extension lengths available 6) all pins: material: copper alloy finish: matte tin over nickel plate 7) undimensioned components are shown for visual reference only. 8) weight: 4.9oz (139g) 9) all dimensions in inches (mm) tolerances: x.xx +/-0.02 in. (x.x +/-0.5mm) x.xxx +/-0.010 in. (x.xx +/-0.25mm) 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 ishare single wire parallel signal 4 vin(C) negative input voltage 5 vout(C) negative output voltage 6 sense(C) negative remote sense(see note 1) 7 trim output voltage trim (see note 2) 8 sense(+) positive remote sense (see note 3) 9 vout(+) positive output voltage a clock sync clock synchronization b start sync startup synchronization 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. mechanical drawing flanged option advanced publication advanced publication
technical specification product # iq4hxxxhtxxx ph one 1-888-567-9596 www.synqor.com doc.# 005-0005270 rev. 2 05/13/ 1 0 pa ge 16 iq4hxxxhtxxx part numbering system the part numbering system for synqors dc-dc converters follows the format shown in the example below. the first 12 characters comprise the base part number and the last 3 characters indicate available options. the -g suffix indicates 6/6 rohs compliance. application notes a variety of application notes and technical white papers can be downloaded in pdf format from our website. rohs compliance: the eu led rohs (restriction of hazardous substances) directive bans the use of lead, cadmium, hexavalent chromium, mercury, polybrominated biphenyls (pbb), and polybrominated diphenyl ether (pbde) in electrical and electronic equipment. this synqor product is 6/6 rohs compliant. for more information please refer to synqors rohs addendum available at our rohs compliance / lead free initiative web page or e-mail us at rohs@synqor.com . ordering information the tables below show the valid model numbers and ordering options for converters in this product family. when ordering synqor converters, please ensure that you use the complete 15 character part number consisting of the 12 character base part number and the additional characters for options. add -g to the model number for 6/6 rohs compliance. the following options must be included in place of the w x y z spaces in the model numbers listed above. not all combinations make valid part numbers, please contact synqor for availability. see the product summary web page for more options. warranty synqor offers a two (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. product family package size performance level thermal design output current 6/6 rohs options (see ordering information) input voltage output voltage contact synqor for further information: phone : 978-849-0600 toll free : 888-567-9596 fax : 978-849-0602 e-mail : power@synqor.com web : www.synqor.com address : 155 swanson road boxborough, ma 01719 usa i q 4 h 0 5 0 h t c 5 0 n r s - g 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 model number input voltage output voltage output current iq4h025htx60xyz 180-425v 2.5v 60 iq4h033htx60xyz 180-425v 3.3v 60 iq4h050htx50xyz 180-425v 5v 50a iq4h120htx25xyz 180-425v 12v 25a iq4h150htx20xyz 180-425v 15v 20a iq4h240htx12xyz 180-425v 24v 12.5a iq4h280htx10xyz 180-425v 28v 10.7a iq4h480htx06xyz 180-425v 48v 6.25a options description: w x y z thermal design enable logic pin style feature set c - encased with threaded baseplate v - encased with flanged baseplate n - negative r - 0.180" s - standard f - full feature ordering information advanced publication

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