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| technical specification iq32-ht family product # iq32xxxhtxxx pho ne 1-888-567-9596 www.synqor.com doc.# 005-0005294 rev. b 5/7/ 10 pag e 1 contents page no. iq32 family electrical characteristics (all output voltages) . . . . . . . . . 2 iq32-ht family figures (all output voltages) . . . . . . . . . . . . . . . . . . . . 3 iq32018htx45 electrical characteristics (1.8 vout) & figures . . . . . . . 4-5 iq32033htx33 electrical characteristics (3.3 vout) & figures . . . . . . . 6-7 iq32050htx24 electrical characteristics (5.0 vout) & figures . . . . . . . 8-9 iq32120htx10 electrical characteristics (12.0 vout) & figures . . . . 10-11 iq32150htx08 electrical characteristics (15.0 vout) & figures . . . . 12-13 iq32240htx05 electrical characteristics (24.0 vout) & figures . . . . 14-15 iq32280htx05 electrical characteristics (28.0 vout) & figures . . . . 16-17 iq32400htx03 electrical characteristics (40.0 vout) & figures . . . . 18-19 iq32480htx03 electrical characteristics (48.0 vout) & figures . . . . 20-21 application section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22-25 iq32-ht family standards & qualification . . . . . . . . . . . . . . . . . . . . . 26 iq32-ht mechanical drawing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 iq32-htv mechanical drawing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 ordering information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 9-75v 100v 1.8-48v 126w 2250v dc half-brick continuous input transient input outputs max power isolation dc-dc converter the inqor? half-brick converter series is composed of next-generation, board-mountable, isolated, fixed switching frequency dc-dc converters that use synchronous rectification to achieve extremely high power conversion efficiency. each module is supplied completely encased to provide protection from the harsh environments seen in many industrial and transportation applications. operational features ? high efficiency, up to 88% at full rated load current ? delivers full power with minimal derating - no heatsink required ? operating input voltage range: 9-75v, 100v transient for 100ms ? fixed frequency switching provides predictable emi ? no minimum load requirement mechanical features ? industry standard half-brick pin-out configuration ? size: 2.390" x 2.490" x 0.512" (60.6 x 63.1 x 13.0 mm) ? total weight: 5 oz (142 g) control features ? on/off control referenced to input side ? remote sense for the output voltage ? output voltage trim range of -20%, +10% protection features ? input under-voltage lockout ? input over-voltage shutdown ? output current limit and short circuit protection ? active back bias limit ? output over-voltage protection ? thermal shutdown safety features ? 2250v, 30 m input-to-output isolation ? can/csa-c22.2 no. 60950-1:2003 ? en60950-1:2001 certified by tuv ? ce marked 2006/95/ec low voltage directive ? iec 61000-4-2 ? rohs compliant (see last page) iq32033htc33nrs-g 9-75v in 1.8-48 v out @ 2.5-45a
technical specification iq32-ht family product # iq32xxxhtxxx ph one 1-888-567-9596 www.synqor.com doc.# 005-0005294 rev. b 5/7 10 pa ge 2 iq32 family electrical characteristics (all output voltages) ta = 25 c, airflow rate = 300 lfm, vin = 32v dc unless otherwise noted; full operating temperature range is -40 c to +100 c baseplate temperature with appropriate power derating. specifications 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 -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 9 32 75 v 100v transient for 100 ms; see note 1 input under-voltage lockout turn-on voltage threshold 11.0 11.2 11.5 v turn-off voltage threshold 8.1 8.4 8.7 v lockout voltage hysteresis 2.8 v input over-voltage shutdown 100 v recommended external input capacitance 470 f typical esr 0.1-0.2 input filter component values (l\c) 0.34\13.2 h\f internal values; see figure e dynamic characteristics turn-on transient turn-on time 10 ms full load, vout=90% nom. start-up inhibit time 200 230 250 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 255 275 295 khz isolation stage switching freq. is half this on/off control off-state voltage 2.4 18 v on-state voltage -2 0.8 on/off control application notes figures a & b pull-up voltage 5 v pull-up resistance 50 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 1.44 10 6 hrs. tb = 70 c calculated mtbf (mil-217) mil-hdbk-217f 1.2 10 6 hrs. tb = 70 c field demonstrated mtbf 10 6 hrs. see our website for details note 1: start-up guaranteed above 11.5 v, but will operate down to 9v note 2: higher values of isolation capacitance can be added external to the module. family electrical characteristics & figures technical specification iq32-ht family product # iq32xxxhtxxx ph one 1-888-567-9596 www.synqor.com doc.# 005-0005294 rev. b 5/7 /10 pa ge 3 common figure 3: trim graph for trim-up 1.8 to 12 v outputs. 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 (%) vin min vin nom vin max typical current limit inception point typical output voltage at shutdown common figure 1: typical startup waveform. input voltage pre-applied, on/off pin on ch 2. common figure 2: output voltage vs. load current showing typical current limit curves and converter shutdown points. 100.0 1,000.0 10,000.0 100,000.0 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 increase in vout (%) trim resistance (kohms) 15 v 24 v 28 v 40 v 48 v 10.0 100.0 1,000.0 10,000.0 100,000.0 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 increase in vout (%) trim resistance (kohms) 1.8 v 3.3 v 5 v 12 v 10.0 100.0 1,000.0 10,000.0 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 decrease in vout (%) trim resistance (kohms) all oltages common figure 4: trim graph for trim-up 15 to 48 v outputs. 5.00 common figure 5 : trim graph for trim down. nominal vout iq32-ht family figures (all output voltages) family electrical characteristics & figures product # iq32xxxhtxxx ph one 1-888-567-9596 www.synqor.com doc.# 005-0005294 rev. b 5/7 /10 pa ge 4 technical specification input: output: current: part no.: 9-75v 1.8v 45a iq32018htx45 electrical characteristics (1.8 vout) & figures iq32018htx45 electrical characteristics (1.8 vout) ta = 25 c, airflow rate = 300 lfm, vin = 32v dc unless otherwise noted; full operating temperature range is -40 c to +100 c baseplate temperature with appropriate power derating. specifications subject to change without notice. parameter min. typ. max. units notes & conditions input characteristics maximum input current 14.7 a vin min; trim up; in current limit no-load input current 300 380 ma disabled input current 3 6 ma response to input transient 0.06 v 1000 v/ms, 32 v to 100 v step; see figure 6 input terminal ripple current 240 ma rms recommended input fuse 25.0 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 90 180 mv full load rms 19 40 mv full load operating output current range 0 45 a subject to thermal derating output dc current-limit inception 49.5 54.0 58.5 a output voltage 10% low output dc current-limit shutdown voltage 0.8 v back-drive current limit while enabled 0.4 a negative current drawn from output back-drive current limit while disabled 1 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) 110 mv 50% to 75% to 50% iout max settling time 400 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 2.1 2.2 2.3 v over full temp range efficiency 100% load 81 % see figure 1 for efficiency curve 50% load 85 % see figure 1 for efficiency 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) product # iq32xxxhtxxx ph one 1-888-567-9596 www.synqor.com doc.# 005-0005294 rev. b 5/7 /10 pa ge 5 technical specification input: output: current: part no.: 9-75v 1.8v 45a iq32018htx45 9-75v 1.8v 45a iq32018htx45 0 3 6 9 12 15 18 21 24 27 0 5 10 15 20 25 30 35 40 45 load current (a) power dissipation (w) 12vin 32 vin 75 vin 60 65 70 75 80 85 90 95 100 0 5 10 15 20 25 30 35 40 45 load current (a) efficiency (%) 12vin 32 vin 75 vin 0 5 10 15 20 25 30 35 40 45 50 25 40 55 70 85 ambient air temperature (c) iout (a) 400 lfm (2.0 m/s) 300 lfm (1.5 m/s) 200 lfm (1.0 m/s) 100 lfm (0.5 m/s) 0 5 10 15 20 25 30 35 40 45 50 25 40 55 70 85 ambient air temperature (c) iout (a) 400 lfm (2.0 m/s) 300 lfm (1.5 m/s) 200 lfm (1.0 m/s) 100 lfm (0.5 m/s) figures figure 1: efficiency at nominal output voltage vs. load current for minimum, nominal, and maximum input voltage at 25c. figure 2: power dissipation at nominal output voltage vs. load current for minimum, nominal, and maximum input voltage at 25c. figure 3: encased converter (without heatsink) max. output power derating vs. ambient air temperature for airflow rates of 100 lfm through 400 lfm. air flows across the converter from pin 3 to pin 1 (nominal input voltage). figure 4: encased converter (with 1/4 heatsink) max. output power derating vs. ambient air temperature for airflow rates of 100 lfm through 400 lfm. air flows across the converter from pin 3 to pin 1 (nominal input voltage). figure 5: output voltage response to step-change in load current (66%-100%- 66% of iout(max); di/dt = 0.1a/s). load cap: 15f tantalum cap and 1f ceramic cap. ch 1: vout, ch 2: iout. figure 6: output voltage response to step-change in input voltage (vnom.- vmax-vnom.), at max. load current. load cap: 15f tantalum capacitor and 1uf ceramic cap. ch 1: vout, ch 2: vin. product # iq32xxxhtxxx ph one 1-888-567-9596 www.synqor.com doc.# 005-0005294 rev. b 5/7 /10 pa ge 6 technical specification input: output: current: part no.: 9-75v 3.3v 33a iq32033htx33 iq32033htx33 electrical characteristics (3.3 vout) ta = 25 c, airflow rate = 300 lfm, vin = 32v dc unless otherwise noted; full operating temperature range is -40 c to +100 c baseplate temperature with appropriate power derating. specifications subject to change without notice. parameter min. typ. max. units notes & conditions input characteristics maximum input current 19.0 a vin min; trim up; in current limit no-load input current 340 430 ma disabled input current 3 6 ma response to input transient 0.12 v 1000 v/ms, 32 v to 100 v step; see figure 6 input terminal ripple current 440 ma rms recommended input fuse 25.0 a fast acting external fuse recommended output characteristics output voltage set point 3.267 3.3 3.333 v output voltage regulation over line 0.1 0.3 % over load 0.1 0.3 % over temperature -50 50 mv total output voltage range 3.218 3.383 v over sample, line, load, temperature & life output voltage ripple and noise 20 mhz bandwidth; see note 1 peak-to-peak 0 175 350 mv full load rms 27 50 mv full load operating output current range 0 33 a subject to thermal derating output dc current-limit inception 36.3 39.6 42.9 a output voltage 10% low output dc current-limit shutdown voltage 1.8 v back-drive current limit while enabled 1.45 a negative current drawn from output back-drive current limit while disabled 1 ma negative current drawn from output maximum output capacitance 10,000 f vout nominal at full load (resistive load) output voltage during load current transient step change in output current (0.1 a/s) 100 mv 50% to 75% to 50% iout max settling time 200 s to within 1% vout nom output voltage trim range -20 10 % across pins 8&4; common figures 3-5 output voltage remote sense range 10 % across pins 8&4 output over-voltage protection 3.9 4.0 4.2 v over full temp range efficiency 100% load 84 % see figure 1 for efficiency curve 50% load 88 % see figure 1 for efficiency 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) electrical characteristics (3.3 vout) & figures product # iq32xxxhtxxx ph one 1-888-567-9596 www.synqor.com doc.# 005-0005294 rev. b 5/7 /10 pa ge 7 technical specification input: output: current: part no.: 9-75v 3.3v 33a iq32033htx33 0 3 6 9 12 15 18 21 24 27 30 33 36 0 5 10 15 20 25 30 load current (a) power dissipation (w) 12vin 32 vin 75 vin 60 65 70 75 80 85 90 95 100 0 5 10 15 20 25 30 load current (a) efficiency (%) 12vin 32 vin 75 vin 0 5 10 15 20 25 30 35 25 40 55 70 85 ambient air temperature (c) iout (a) 400 lfm (2.0 m/s) 300 lfm (1.5 m/s) 200 lfm (1.0 m/s) 100 lfm (0.5 m/s) 0 5 10 15 20 25 30 35 25 40 55 70 85 ambient air temperature (c) iout (a) 400 lfm (2.0 m/s) 300 lfm (1.5 m/s) 200 lfm (1.0 m/s) 100 lfm (0.5 m/s) figures figure 1: efficiency at nominal output voltage vs. load current for minimum, nominal, and maximum input voltage at 25c. figure 2: power dissipation at nominal output voltage vs. load current for minimum, nominal, and maximum input voltage at 25c. figure 3: encased converter (without heatsink) max. output power derating vs. ambient air temperature for airflow rates of 100 lfm through 400 lfm. air flows across the converter from pin 3 to pin 1 (nominal input voltage). figure 4: encased converter (with 1/4 heatsink) max. output power derating vs. ambient air temperature for airflow rates of 100 lfm through 400 lfm. air flows across the converter from pin 3 to pin 1 (nominal input voltage). figure 5: output voltage response to step-change in load current (66%-100%- 66% of iout(max); di/dt = 0.1a/s). load cap: 15f tantalum cap and 1f ceramic cap. ch 1: vout, ch 2: iout. figure 6: output voltage response to step-change in input voltage (vnom.- vmax-vnom.), at max. load current. load cap: 15f tantalum capacitor and 1uf ceramic cap. ch 1: vout, ch 2: vin. product # iq32xxxhtxxx ph one 1-888-567-9596 www.synqor.com doc.# 005-0005294 rev. b 5/7 /10 pa ge 8 technical specification input: output: current: part no.: 9-75v 5v 24a iq32050htx24 iq32050htx24 electrical characteristics (5.0 vout) ta = 25 c, airflow rate = 300 lfm, vin = 32v dc unless otherwise noted; full operating temperature range is -40 c to +100 c baseplate temperature with appropriate power derating. specifications subject to change without notice. parameter min. typ. max. units notes & conditions input characteristics maximum input current 20.7 a vin min; trim up; in current limit no-load input current 325 410 ma disabled input current 3 6 ma response to input transient 0.15 v 1000 v/ms, 32 v to 100 v step; see figure 6 input terminal ripple current 350 ma rms recommended input fuse 25.0 a fast acting external fuse recommended output characteristics output voltage set point 4.95 5 5.05 v output voltage regulation over line 0.1 0.3 % over load 0.1 0.3 % 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 0 140 280 mv full load rms 18 40 mv full load operating output current range 0 24 a subject to thermal derating output dc current-limit inception 26.4 28.8 31.2 a output voltage 10% low output dc current-limit shutdown voltage 2.4 v back-drive current limit while enabled 0.75 a negative current drawn from output back-drive current limit while disabled 1 ma negative current drawn from output maximum output capacitance 8,000 f vout nominal at full load (resistive load) output voltage during load current transient step change in output current (0.1 a/s) 165 mv 50% to 75% to 50% iout max settling time 200 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 efficiency curve 50% load 88 % see figure 1 for efficiency 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) & figures product # iq32xxxhtxxx ph one 1-888-567-9596 www.synqor.com doc.# 005-0005294 rev. b 5/7 /10 pa ge 9 technical specification input: output: current: part no.: 9-75v 5v 24a iq32050htx24 0 5 10 15 20 25 30 35 0 4 8 12 16 20 24 load current (a) power dissipation (w) 12vin 32 vin 75 vin 60 65 70 75 80 85 90 95 100 0 4 8 12 16 20 24 load current (a) efficiency (%) 12vin 32 vin 75 vin 0 5 10 15 20 25 30 25 40 55 70 85 ambient air temperature (c) iout (a) 400 lfm (2.0 m/s) 300 lfm (1.5 m/s) 200 lfm (1.0 m/s) 100 lfm (0.5 m/s) 0 5 10 15 20 25 30 25 40 55 70 85 ambient air temperature (c) iout (a) 400 lfm (2.0 m/s) 300 lfm (1.5 m/s) 200 lfm (1.0 m/s) 100 lfm (0.5 m/s) figures figure 1: efficiency at nominal output voltage vs. load current for minimum, nominal, and maximum input voltage at 25c. figure 2: power dissipation at nominal output voltage vs. load current for minimum, nominal, and maximum input voltage at 25c. figure 3: encased converter (without heatsink) max. output power derating vs. ambient air temperature for airflow rates of 100 lfm through 400 lfm. air flows across the converter from pin 3 to pin 1 (nominal input voltage). figure 4: encased converter (with 1/4 heatsink) max. output power derating vs. ambient air temperature for airflow rates of 100 lfm through 400 lfm. air flows across the converter from pin 3 to pin 1 (nominal input voltage). figure 5: output voltage response to step-change in load current (66%-100%- 66% of iout(max); di/dt = 0.1a/s). load cap: 15f tantalum cap and 1f ceramic cap. ch 1: vout, ch 2: iout. figure 6: output voltage response to step-change in input voltage (vnom.- vmax-vnom.), at max. load current. load cap: 15f tantalum capacitor and 1uf ceramic cap. ch 1: vout, ch 2: vin. product # iq32xxxhtxxx ph one 1-888-567-9596 www.synqor.com doc.# 005-0005294 rev. b 5/7/ 10 pa ge 10 technical specification input: output: current: part no.: 9-75v 12v 10a iq32120htx10 iq32120htx10 electrical characteristics (12.0 vout) ta = 25 c, airflow rate = 300 lfm, vin = 32v dc unless otherwise noted; full operating temperature range is -40 c to +100 c baseplate temperature with appropriate power derating. specifications subject to change without notice. parameter min. typ. max. units notes & conditions input characteristics maximum input current 20.2 a vin min; trim up; in current limit no-load input current 450 560 ma disabled input current 3 6 ma response to input transient 0.32 v 1000 v/ms, 32 v to 100 v step; see figure 6 input terminal ripple current 330 ma rms recommended input fuse 25.0 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 0 110 220 mv full load rms 17 30 mv full load operating output current range 0 10 a subject to thermal derating output dc current-limit inception 11.0 12.0 13.0 a output voltage 10% low output dc current-limit shutdown voltage 6 v back-drive current limit while enabled 0.45 a negative current drawn from output back-drive current limit while disabled 1 ma negative current drawn from output maximum output capacitance 1,500 f vout nominal at full load (resistive load) output voltage during load current transient step change in output current (0.1 a/s) 350 mv 50% to 75% to 50% iout max settling time 80 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 14.0 14.6 15.2 v over full temp range efficiency 100% load 87 % see figure 1 for efficiency curve 50% load 88 % see figure 1 for efficiency 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 (12 vout) & figures product # iq32xxxhtxxx ph one 1-888-567-9596 www.synqor.com doc.# 005-0005294 rev. b 5/7 /10 pa ge 11 technical specification input: output: current: part no.: 9-75v 12v 10a iq32120htx10 0 3 6 9 12 15 18 21 24 27 30 0 1 2 3 4 5 6 7 8 9 10 load current (a) power dissipation (w) 12vin 32 vin 75 vin 60 65 70 75 80 85 90 95 100 0 1 2 3 4 5 6 7 8 9 10 load current (a) efficiency (%) 12vin 32 vin 75 vin 0 2 4 6 8 10 12 25 40 55 70 85 ambient air temperature (c) iout (a) 400 lfm (2.0 m/s) 300 lfm (1.5 m/s) 200 lfm (1.0 m/s) 100 lfm (0.5 m/s) 0 2 4 6 8 10 12 25 40 55 70 85 ambient air temperature (c) iout (a) 400 lfm (2.0 m/s) 300 lfm (1.5 m/s) 200 lfm (1.0 m/s) 100 lfm (0.5 m/s) figures figure 1: efficiency at nominal output voltage vs. load current for minimum, nominal, and maximum input voltage at 25c. figure 2: power dissipation at nominal output voltage vs. load current for minimum, nominal, and maximum input voltage at 25c. figure 3: encased converter (without heatsink) max. output power derating vs. ambient air temperature for airflow rates of 100 lfm through 400 lfm. air flows across the converter from pin 3 to pin 1 (nominal input voltage). figure 4: encased converter (with 1/4 heatsink) max. output power derating vs. ambient air temperature for airflow rates of 100 lfm through 400 lfm. air flows across the converter from pin 3 to pin 1 (nominal input voltage). figure 5: output voltage response to step-change in load current (66%-100%- 66% of iout(max); di/dt = 0.1a/s). load cap: 15f tantalum cap and 1f ceramic cap. ch 1: vout, ch 2: iout. figure 6: output voltage response to step-change in input voltage (vnom.- vmax-vnom.), at max. load current. load cap: 15f tantalum capacitor and 1uf ceramic cap. ch 1: vout, ch 2: vin. product # iq32xxxhtxxx ph one 1-888-567-9596 www.synqor.com doc.# 005-0005294 rev. b 5/7/ 10 pa ge 12 technical specification input: output: current: part no.: 9-75v 15v 8.0a iq32150htx08 iq32150htx08 electrical characteristics (15.0 vout) ta = 25 c, airflow rate = 300 lfm, vin = 32v dc unless otherwise noted; full operating temperature range is -40 c to +100 c baseplate temperature with appropriate power derating. specifications subject to change without notice. parameter min. typ. max. units notes & conditions input characteristics maximum input current 20.5 a vin min; trim up; in current limit no-load input current 400 500 ma disabled input current 3 6 ma response to input transient 0.43 v 1000 v/ms, 32 v to 100 v step; see figure 6 input terminal ripple current 375 ma rms recommended input fuse 25.0 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 75 150 mv full load rms 11 20 mv full load operating output current range 0 8 a subject to thermal derating output dc current-limit inception 8.8 9.6 10.4 a output voltage 10% low output dc current-limit shutdown voltage 8 v back-drive current limit while enabled 0.5 a negative current drawn from output back-drive current limit while disabled 1 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) 660 mv 50% to 75% to 50% iout max settling time 80 s to within 1% vout nom output voltage trim range -20 10 % across pins 8&4; common figures 3-5 output voltage remote sense range 10 % across pins 8&4 output over-voltage protection 17.6 18.3 19.1 v over full temp range efficiency 100% load 86 % see figure 1 for efficiency curve 50% load 88 % see figure 1 for efficiency 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) electrical characteristics (15 vout) & figures product # iq32xxxhtxxx ph one 1-888-567-9596 www.synqor.com doc.# 005-0005294 rev. b 5/7/ 10 pa ge 13 technical specification input: output: current: part no.: 9-75v 15v 8.0a iq32150htx08 0 3 6 9 12 15 18 21 24 27 30 33 0 1 2 3 4 5 6 7 8 load current (a) power dissipation (w) 12vin 32 vin 75 vin 60 65 70 75 80 85 90 95 100 0 1 2 3 4 5 6 7 8 load current (a) efficiency (%) 12vin 32 vin 75 vin 0 1 2 3 4 5 6 7 8 9 25 40 55 70 85 ambient air temperature (c) iout (a) 400 lfm (2.0 m/s) 300 lfm (1.5 m/s) 200 lfm (1.0 m/s) 100 lfm (0.5 m/s) 0 1 2 3 4 5 6 7 8 9 25 40 55 70 85 ambient air temperature (c) iout (a) 400 lfm (2.0 m/s) 300 lfm (1.5 m/s) 200 lfm (1.0 m/s) 100 lfm (0.5 m/s) figures figure 1: efficiency at nominal output voltage vs. load current for minimum, nominal, and maximum input voltage at 25c. figure 2: power dissipation at nominal output voltage vs. load current for minimum, nominal, and maximum input voltage at 25c. figure 3: encased converter (without heatsink) max. output power derating vs. ambient air temperature for airflow rates of 100 lfm through 400 lfm. air flows across the converter from pin 3 to pin 1 (nominal input voltage). figure 4: encased converter (with 1/4 heatsink) max. output power derating vs. ambient air temperature for airflow rates of 100 lfm through 400 lfm. air flows across the converter from pin 3 to pin 1 (nominal input voltage). figure 5: output voltage response to step-change in load current (66%-100%- 66% of iout(max); di/dt = 0.1a/s). load cap: 15f tantalum cap and 1f ceramic cap. ch 1: vout, ch 2: iout. figure 6: output voltage response to step-change in input voltage (vnom.- vmax-vnom.), at max. load current. load cap: 15f tantalum capacitor and 1uf ceramic cap. ch 1: vout, ch 2: vin. product # iq32xxxhtxxx ph one 1-888-567-9596 www.synqor.com doc.# 005-0005294 rev. b 5/7 /10 pa ge 14 technical specification input: output: current: part no.: 9-75v 24v 5.0a iq32240htx05 iq32240htx05 electrical characteristics (24.0 vout) ta = 25 c, airflow rate = 300 lfm, vin = 32v dc unless otherwise noted; full operating temperature range is -40 c to +100 c baseplate temperature with appropriate power derating. specifications subject to change without notice. parameter min. typ. max. units notes & conditions input characteristics maximum input current 20.7 a vin min; trim up; in current limit no-load input current 330 410 ma disabled input current 3 6 ma response to input transient 1.2 v 1000 v/ms, 32 v to 100 v step; see figure 6 input terminal ripple current 360 ma rms recommended input fuse 25.0 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 0 150 300 mv full load rms 21 40 mv full load operating output current range 0 5 a subject to thermal derating output dc current-limit inception 5.5 6.0 6.5 a output voltage 10% low output dc current-limit shutdown voltage 13 v back-drive current limit while enabled 0.25 a negative current drawn from output back-drive current limit while disabled 1 ma negative current drawn from output maximum output capacitance 400 f vout nominal at full load (resistive load) output voltage during load current transient step change in output current (0.1 a/s) 1400 mv 50% to 75% to 50% iout max settling time 80 s to within 1% vout nom output voltage trim range -20 10 % across pins 8&4; common figures 3-5 output voltage remote sense range 10 % across pins 8&4 output over-voltage protection 28.1 29.3 30.5 v over full temp range efficiency 100% load 85 % see figure 1 for efficiency curve 50% load 88 % see figure 1 for efficiency curve note 1: output is terminated with 1 f ceramic capacitor. for applications requiring reduced output voltage ripple and noise, consult synqor applications support (e-mail: support@synqor.com) electrical characteristics (24 vout) & figures product # iq32xxxhtxxx ph one 1-888-567-9596 www.synqor.com doc.# 005-0005294 rev. b 5/7 /10 pa ge 15 technical specification input: output: current: part no.: 9-75v 24v 5.0a iq32240htx05 0 5 10 15 20 25 30 35 40 0 1 2 3 4 5 load current (a) power dissipation (w) 12vin 32 vin 75 vin 60 65 70 75 80 85 90 95 100 0 1 2 3 4 5 load current (a) efficiency (%) 12vin 32 vin 75 vin 0 1 2 3 4 5 6 25 40 55 70 85 ambient air temperature (c) iout (a) 400 lfm (2.0 m/s) 300 lfm (1.5 m/s) 200 lfm (1.0 m/s) 100 lfm (0.5 m/s) 0 1 2 3 4 5 6 25 40 55 70 85 ambient air temperature (c) iout (a) 400 lfm (2.0 m/s) 300 lfm (1.5 m/s) 200 lfm (1.0 m/s) 100 lfm (0.5 m/s) figures figure 1: efficiency at nominal output voltage vs. load current for minimum, nominal, and maximum input voltage at 25c. figure 2: power dissipation at nominal output voltage vs. load current for minimum, nominal, and maximum input voltage at 25c. figure 3: encased converter (without heatsink) max. output power derating vs. ambient air temperature for airflow rates of 100 lfm through 400 lfm. air flows across the converter from pin 3 to pin 1 (nominal input voltage). figure 4: encased converter (with 1/4 heatsink) max. output power derating vs. ambient air temperature for airflow rates of 100 lfm through 400 lfm. air flows across the converter from pin 3 to pin 1 (nominal input voltage). figure 5: output voltage response to step-change in load current (66%-100%- 66% of iout(max); di/dt = 0.1a/s). load cap: 1f ceramic cap. ch 1: vout, ch 2: iout. figure 6: output voltage response to step-change in input voltage (vnom.- vmax-vnom.), at max. load current. load cap: 1uf ceramic cap. ch 1: vout, ch 2: vin. product # iq32xxxhtxxx ph one 1-888-567-9596 www.synqor.com doc.# 005-0005294 rev. b 5/7 /10 pa ge 16 technical specification input: output: current: part no.: 9-75v 28 v 4.5a iq32280htx05 iq32280htx05 electrical characteristics (28.0 vout) ta = 25 c, airflow rate = 300 lfm, vin = 32v dc unless otherwise noted; full operating temperature range is -40 c to +100 c baseplate temperature with appropriate power derating. specifications subject to change without notice. parameter min. typ. max. units notes & conditions input characteristics maximum input current 21.7 a vin min; trim up; in current limit no-load input current 350 440 ma disabled input current 3 6 ma response to input transient 1.5 v 1000 v/ms, 32 v to 100 v step; see figure 6 input terminal ripple current 390 ma rms recommended input fuse 25.0 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 0 160 320 mv full load rms 21 40 mv full load operating output current range 0 4.5 a subject to thermal derating output dc current-limit inception 5.0 5.4 5.9 a output voltage 10% low output dc current-limit shutdown voltage 15 v back-drive current limit while enabled 0.25 a negative current drawn from output back-drive current limit while disabled 1 ma negative current drawn from output maximum output capacitance 250 f vout nominal at full load (resistive load) output voltage during load current transient step change in output current (0.1 a/s) 1600 mv 50% to 75% to 50% iout max settling time 80 s to within 1% vout nom output voltage trim range -20 10 % across pins 8&4; common figures 3-5 output voltage remote sense range 10 % across pins 8&4 output over-voltage protection 32.8 34.2 35.6 v over full temp range efficiency 100% load 85 % see figure 1 for efficiency curve 50% load 88 % see figure 1 for efficiency curve note 1: output is terminated with 1 f ceramic capacitor. for applications requiring reduced output voltage ripple and noise, consult synqor applications support (e-mail: support@synqor.com) electrical characteristics (28 vout) & figures product # iq32xxxhtxxx ph one 1-888-567-9596 www.synqor.com doc.# 005-0005294 rev. b 5/7 /10 pa ge 17 technical specification input: output: current: part no.: 9-75v 28 v 4.5a iq32280htx05 0 5 10 15 20 25 30 35 0 1 2 3 4 load current (a) power dissipation (w) 12vin 32 vin 75 vin 60 65 70 75 80 85 90 95 100 0 1 2 3 4 load current (a) efficiency (%) 12vin 32 vin 75 vin 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 25 40 55 70 85 ambient air temperature (c) iout (a) 400 lfm (2.0 m/s) 300 lfm (1.5 m/s) 200 lfm (1.0 m/s) 100 lfm (0.5 m/s) 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 25 40 55 70 85 ambient air temperature (c) iout (a) 400 lfm (2.0 m/s) 300 lfm (1.5 m/s) 200 lfm (1.0 m/s) 100 lfm (0.5 m/s) figures figure 1: efficiency at nominal output voltage vs. load current for minimum, nominal, and maximum input voltage at 25c. figure 2: power dissipation at nominal output voltage vs. load current for minimum, nominal, and maximum input voltage at 25c. figure 3: encased converter (without heatsink) max. output power derating vs. ambient air temperature for airflow rates of 100 lfm through 400 lfm. air flows across the converter from pin 3 to pin 1 (nominal input voltage). figure 4: encased converter (with 1/4 heatsink) max. output power derating vs. ambient air temperature for airflow rates of 100 lfm through 400 lfm. air flows across the converter from pin 3 to pin 1 (nominal input voltage). figure 5: output voltage response to step-change in load current (66%-100%- 66% of iout(max); di/dt = 0.1a/s). load cap: 1f ceramic cap. ch 1: vout, ch 2: iout. figure 6: output voltage response to step-change in input voltage (vnom.- vmax-vnom.), at max. load current. load cap: 1uf ceramic cap. ch 1: vout, ch 2: vin. product # iq32xxxhtxxx ph one 1-888-567-9596 www.synqor.com doc.# 005-0005294 rev. b 5/7 /10 pa ge 18 technical specification input: output: current: part no.: 9-75v 40v 3.0a iq32400htx03 iq32400htx03 electrical characteristics (40.0 vout) ta = 25 c, airflow rate = 300 lfm, vin = 32v dc unless otherwise noted; full operating temperature range is -40 c to +100 c baseplate temperature with appropriate power derating. specifications subject to change without notice. parameter min. typ. max. units notes & conditions input characteristics maximum input current 20.7 a vin min; trim up; in current limit no-load input current 400 500 ma disabled input current 3 6 ma response to input transient 2.4 v 1000 v/ms, 32 v to 100 v step; see figure 6 input terminal ripple current 350 ma rms recommended input fuse 25.0 a fast acting external fuse recommended output characteristics output voltage set point 39.6 40 40.4 v output voltage regulation over line 0.1 0.3 % over load 0.1 0.3 % over temperature -600 600 mv total output voltage range 39.000 41.000 v over sample, line, load, temperature & life output voltage ripple and noise 20 mhz bandwidth; see note 1 peak-to-peak 0 180 360 mv full load rms 22 40 mv full load operating output current range 0 3 a subject to thermal derating output dc current-limit inception 3.3 3.6 3.9 a output voltage 10% low output dc current-limit shutdown voltage 22 v back-drive current limit while enabled 0.25 a negative current drawn from output back-drive current limit while disabled 1 ma negative current drawn from output maximum output capacitance 150 f vout nominal at full load (resistive load) output voltage during load current transient step change in output current (0.1 a/s) 2500 mv 50% to 75% to 50% iout max settling time 80 s to within 1% vout nom output voltage trim range -20 10 % across pins 8&4; common figures 3-5 output voltage remote sense range 10 % across pins 8&4 output over-voltage protection 46.8 48.8 50.8 v over full temp range efficiency 100% load 85 % see figure 1 for efficiency curve 50% load 88 % see figure 1 for efficiency curve note 1: output is terminated with 1 f ceramic capacitor. for applications requiring reduced output voltage ripple and noise, consult synqor applications support (e-mail: support@synqor.com) electrical characteristics (40 vout) & figures product # iq32xxxhtxxx ph one 1-888-567-9596 www.synqor.com doc.# 005-0005294 rev. b 5/7 /10 pa ge 19 technical specification input: output: current: part no.: 9-75v 40v 3.0a iq32400htx03 0 5 10 15 20 25 30 35 0.0 0.5 1.0 1.5 2.0 2.5 3.0 load current (a) power dissipation (w) 9 vin 32 vin 75 vin 60 65 70 75 80 85 90 95 100 0.0 0.5 1.0 1.5 2.0 2.5 3.0 load current (a) efficiency (%) 9 vin 32 vin 75 vin 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 25 40 55 70 85 ambient air temperature (c) iout (a) 400 lfm (2.0 m/s) 300 lfm (1.5 m/s) 200 lfm (1.0 m/s) 100 lfm (0.5 m/s) 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 25 40 55 70 85 ambient air temperature (c) iout (a) 400 lfm (2.0 m/s) 300 lfm (1.5 m/s) 200 lfm (1.0 m/s) 100 lfm (0.5 m/s) figures figure 1: efficiency at nominal output voltage vs. load current for minimum, nominal, and maximum input voltage at 25c. figure 2: power dissipation at nominal output voltage vs. load current for minimum, nominal, and maximum input voltage at 25c. figure 3: encased converter (without heatsink) max. output power derating vs. ambient air temperature for airflow rates of 100 lfm through 400 lfm. air flows across the converter from pin 3 to pin 1 (nominal input voltage). figure 4: encased converter (with 1/4 heatsink) max. output power derating vs. ambient air temperature for airflow rates of 100 lfm through 400 lfm. air flows across the converter from pin 3 to pin 1 (nominal input voltage). figure 5: output voltage response to step-change in load current (66%-100%- 66% of iout(max); di/dt = 0.1a/s). load cap: 1f ceramic cap. ch 1: vout, ch 2: iout. figure 6: output voltage response to step-change in input voltage (vnom.- vmax-vnom.), at max. load current. load cap: 1uf ceramic cap. ch 1: vout, ch 2: vin. product # iq32xxxhtxxx ph one 1-888-567-9596 www.synqor.com doc.# 005-0005294 rev. b 5/7 /10 pa ge 20 technical specification input: output: current: part no.: 9-75v 48v 2.5a iq32480htx03 iq32480htx03 electrical characteristics (48.0 vout) ta = 25 c, airflow rate = 300 lfm, vin = 32v dc unless otherwise noted; full operating temperature range is -40 c to +100 c baseplate temperature with appropriate power derating. specifications subject to change without notice. parameter min. typ. max. units notes & conditions input characteristics maximum input current 20.0 a vin min; trim up; in current limit no-load input current 180 230 ma disabled input current 1 2 ma response to input transient 3.9 v 1000 v/ms, 32 v to 100 v step; see figure 6 input terminal ripple current 900 ma rms recommended input fuse 25.0 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 80 160 mv full load rms 17 30 mv full load operating output current range 0 2.5 a subject to thermal derating output dc current-limit inception 2.8 3.0 3.3 a output voltage 10% low output dc current-limit shutdown voltage 31 v back-drive current limit while enabled 0.1 a negative current drawn from output back-drive current limit while disabled 1 ma negative current drawn from output maximum output capacitance 100 f vout nominal at full load (resistive load) output voltage during load current transient step change in output current (0.1 a/s) 2200 mv 50% to 75% to 50% iout max settling time 80 s to within 1% vout nom output voltage trim range -20 10 % across pins 8&4; common figures 3-5 output voltage remote sense range 10 % across pins 8&4 output over-voltage protection 56.2 58.6 61.0 v over full temp range efficiency 100% load 88 % see figure 1 for efficiency curve 50% load 90 % see figure 1 for efficiency curve note 1: output is terminated with 1 f ceramic capacitor. for applications requiring reduced output voltage ripple and noise, consult synqor applications support (e-mail: support@synqor.com) electrical characteristics (48 vout) & figures product # iq32xxxhtxxx ph one 1-888-567-9596 www.synqor.com doc.# 005-0005294 rev. b 5/7 /10 pa ge 21 technical specification input: output: current: part no.: 9-75v 48v 2.5a iq32480htx03 0 5 10 15 20 25 30 35 0.0 0.5 1.0 1.5 2.0 2.5 load current (a) power dissipation (w) 9 vin 32 vin 75 vin 60 65 70 75 80 85 90 95 100 0.0 0.5 1.0 1.5 2.0 2.5 load current (a) efficiency (%) 9 vin 32 vin 75 vin 0.0 0.5 1.0 1.5 2.0 2.5 3.0 25 40 55 70 85 ambient air temperature (c) iout (a) 400 lfm (2.0 m/s) 300 lfm (1.5 m/s) 200 lfm (1.0 m/s) 100 lfm (0.5 m/s) 0.0 0.5 1.0 1.5 2.0 2.5 3.0 25 40 55 70 85 ambient air temperature (c) iout (a) 400 lfm (2.0 m/s) 300 lfm (1.5 m/s) 200 lfm (1.0 m/s) 100 lfm (0.5 m/s) figures figure 1: efficiency at nominal output voltage vs. load current for minimum, nominal, and maximum input voltage at 25c. figure 2: power dissipation at nominal output voltage vs. load current for minimum, nominal, and maximum input voltage at 25c. figure 3: encased converter (without heatsink) max. output power derating vs. ambient air temperature for airflow rates of 100 lfm through 400 lfm. air flows across the converter from pin 3 to pin 1 (nominal input voltage). figure 4: encased converter (with 1/4 heatsink) max. output power derating vs. ambient air temperature for airflow rates of 100 lfm through 400 lfm. air flows across the converter from pin 3 to pin 1 (nominal input voltage). figure 5: output voltage response to step-change in load current (66%-100%- 66% of iout(max); di/dt = 0.1a/s). load cap: 1f ceramic cap. ch 1: vout, ch 2: iout (1 a/div). figure 6: output voltage response to step-change in input voltage (vnom.- vmax-vnom.), at max. load current. load cap: 1uf ceramic cap. ch 1: vout, ch 2: vin. technical specification iq32-ht family product # iq32xxxhtxxx ph one 1-888-567-9596 www.synqor.com doc.# 005-0005294 rev. b 5/7/ 10 pa ge 22 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 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) 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 ttl 5v 50k 50k on/off v in( _ ) 100pf technical specification iq32-ht family product # iq32xxxhtxxx ph one 1-888-567-9596 www.synqor.com doc.# 005-0005294 rev. b 5/7 /10 pa ge 23 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 : 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 5 hz (nominal) frequency with a 5% 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 % ) = ( _ technical specification iq32-ht family product # iq32xxxhtxxx ph one 1-888-567-9596 www.synqor.com doc.# 005-0005294 rev. b 5/7 /10 pa ge 24 application considerations figure c: typical application circuit (negative logic unit, permanently enabled). figure d: 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 2 c 1 l in v in(+) v in( _ ) regulation stage isolation stage 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 c provides a typical circuit diagram which details the input filtering and voltage trimming. input filtering and external capacitance: figure d 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. technical specification iq32-ht family product # iq32xxxhtxxx ph one 1-888-567-9596 www.synqor.com doc.# 005-0005294 rev. b 5/7 /10 pa ge 25 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 5 hz hiccup mode, which prevents the converter from overheating. in all, there are seven ways that the converter can be shut down, initiating a startup inhibit period: ? input under-voltage lockout ? input over-voltage lockout ? output over-voltage protection ? over temperature shutdown ? current limit ? short circuit protection ? turned off by the on/off input figure e 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. for convenience, power derating curves for an encased converter without a heatsink and with a typical heatsink are provided for each output voltage. figure e: 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 9ms (typical turn on time) on on on off off technical specification iq32-ht family product # iq32xxxhtxxx ph one 1-888-567-9596 www.synqor.com doc.# 005-0005294 rev. b 5/7 /10 pa ge 26 iq32-ht family standards & qualification 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 parameter notes & conditions standards compliance ul/cul 60950-1 basic insulation can/csa-c22.2 no. 60950-1:2003 en60950-1:2001 certified by tuv 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 official safety certificates on new releases or download from the synqor website. technical specification iq32-ht family product # iq32xxxhtxxx ph one 1-888-567-9596 www.synqor.com doc.# 005-0005294 rev. b 05/7 / 10 pa ge 27 iq32-ht mechanical drawing .400 [ 10,16] .543 .020 [ 13,79 0,5 ] 1.400 [ ]35,56 thru hole m3 (see note 8) standoffs (4) 1 2 3 top view 4 5 6 7 8 1.90 [ 48,3] 2.486 .020 [ 0,5 ]63,14 .243 .020 [ 6,17 0,5 ] .243 .020 [ 6,17 0,5 ] .233 .020 [ 5,92 0,5 ] 1.90 [ 48,3] 2.386 .020 [ 60,6 0,5 ] .400 [ 10,16] .700 [ 17,78] 1.000 [ 25,4] 1.400 [ 2.00 [ ] 35,56] 50,8 .163 [ 4,14] side view overall height +.002 .512 -.005 +0,05 13 -0,12[ ] bottomside clearance +.007 .027 -.010 +0,17 0,69 [ -0,25 ] notes 1) applied torque per screw should not exceed 6in-lb. (0.7 nm). 2) baseplate flatness tolerance is 0.004" (.10 mm) 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 0.080 (2.03 mm) dia. with 0.125 (3.18 mm) dia. standoff shoulders 5) all pins: material: copper alloy finish: matte tin over nickel plate 6) undimensioned components are shown for visual reference only 7) weight: 4.9 oz (139 g) 8) threaded or non-threaded options available 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 vin(C) negative input voltage 4 vout(C) negative output voltage 5 sense(C) negative remote sense(see note 1) 6 trim output voltage trim (see note 2) 7 sense(+) positive remote sense (see note 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. technical specification iq32-ht family product # iq32xxxhtxxx ph one 1-888-567-9596 www.synqor.com doc.# 005-0005294 rev. b 5/7 /10 pa ge 28 iq32-htv mechanical drawing 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(see note 1) 6 trim output voltage trim (see note 2) 7 sense(+) positive remote sense (see note 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. notes 1) applied torque per screw should not exceed 5in-lb. (3in-lb recommended). 2) baseplate flatness tolerance is 0.01" (.25 mm) 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 0.080 (2.03 mm) dia. with 0.125 (3.18 mm) dia. standoff shoulders 5) all pins: material: copper alloy finish: matte tin over nickel plate 6) undimensioned components are shown for visual reference only 7) weight: 4.8 oz (137g) 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) technical specification iq32-ht family product # iq32xxxhtxxx ph one 1-888-567-9596 www.synqor.com doc.# 005-0005294 rev. b 5/7 /10 pa ge 29 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 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. 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 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 i q 3 2 0 1 8 h t c 4 5 n r s - g model number input voltage output voltage max output current iq32018htw45nrs 9-75v 1.8v 45a iq32033htw33nrs 9-75v 3.3v 33a iq32050htw24nrs 9-75v 5v 24a iq32120htw10nrs 9-75v 12v 10a iq32150htw08nrs 9-75v 15v 8a iq32240htw05nrs 9-75v 24v 5a iq32280htw05nrs 9-75v 28v 4.5a iq32400htw03nrs 9-75v 40v 3a iq32480htw03nrs 9-75v 48v 2.5a options description: w x y z thermal design enable logic pin style feature set c - encased with threaded baseplate n - negative r - 0.180" s - standard d - encased with non-threaded baseplate v - encased with flanged baseplate |
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