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product # iq18xxxskxxx phone 1-888-567-9596 www.synqor.com doc.# 005-0005462 rev. c 05/27/10 page 1 technical specification iq18xxxskxxx iq18150skc02nrs-g 9-36v in 15v out @ 1.7a protection features the inqor sixteenth-brick converter series is composed of next-generation, board-mountable, isolated, 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, 82% at full rated load current ? delivers full power with minimal derating - no heatsink required ? operating input voltage range: 9-36v with 40v for 100ms transient ? fixed frequency switching provides predictable emi ? no minimum load requirement ? input under-voltage lockout ? output current limit and short circuit protection ? active back bias limit ? output over-voltage protection ? thermal shutdown mechanical features ? industry standard sixteenth-brick pin-out confguration ? size: 1.04" x 1.44" x 0.500" (26.3 x 36.5 x 12.7 mm) ? total weight:1.14oz (32.3g) control features ? on/off control referenced to input side ? remote sense for the output voltage ? output voltage trim range of -10%, +10% safety features ? 2250v input-to-output isolation ? ul 60950-1:2003 basic insulation ? can/csa-c22.2 no. 60950-1:2003 ? en60950-1:2001 ? rohs compliant (see last page) contents page no. family electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 electrical characteristics (1.2 vout) & figures . . . . . . . . . . . . . . . . . . . 4 electrical characteristics (1.5 vout) & figures . . . . . . . . . . . . . . . . . . . 6 electrical characteristics (1.8 vout) & figures . . . . . . . . . . . . . . . . . . . 8 electrical characteristics (2.5 vout) & figures . . . . . . . . . . . . . . . . . . . 10 electrical characteristics (3.3 vout) & figures . . . . . . . . . . . . . . . . . . . 12 electrical characteristics (5 vout) & figures . . . . . . . . . . . . . . . . . . . . . 14 electrical characteristics (7 vout) & figures . . . . . . . . . . . . . . . . . . . . . 16 electrical characteristics (12 vout) & figures . . . . . . . . . . . . . . . . . . . . 18 electrical characteristics (15 vout) & figures . . . . . . . . . . . . . . . . . . . . 20 application section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 standards & qualification testing . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26 encased mechanical drawing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 full feature mechanical drawing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 flanged mechanical drawing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 ordering information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 9-36v 40v 1.2-15v 26w 2250vdc sixteenth-brick continuous input transient input outputs max power isolation dc-dc converter
product # iq18xxxskxxx phone 1-888-567-9596 www.synqor.com doc.# 005-0005462 rev. c 05/27/10 page 2 technical specification iq18xxxskxxx family electrical characteristics iq18-sk family electrical characteristics (all output voltages) ta = 25c, airfow rate = 300 lfm, vin = 18vdc unless otherwise noted; full operating temperature range is -40c to +100c 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 50 v continuous operating 36 v continuous operating transient protection 40 v 100ms 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 8 v input characteristics operating input voltage range 9 18 36 v see note 1 input under-voltage lockout turn-on voltage threshold 9.3 9.7 10.3 v turn-off voltage threshold 7.9 8.4 8.9 v lockout voltage hysteresis 1.3 v recommended external input capacitance 100 f typical esr 0.1-0.2 input filter component values (l\c) 0.22\5 h\f internal values; see figure e dynamic characteristics turn-on transient turn-on time 35 ms full load, vout=90% nom. start-up inhibit time 180 200 250 ms figure f; see note 3 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 150c board temperature 125 c ul rated max operating temp 130c transformer temperature 125 c maximum baseplate temperature, tb 100 c feature characteristics switching frequency 350 khz on/off control off-state voltage 2.4 8 v on-state voltage -2 0.8 on/off control application notes figures a & b pull-up voltage 5 v pull-up resistance 10 k over-temperature shutdown otp trip point 125 c average pcb temperature over-temperature shutdown restart hysteresis 10 c reliability characteristics calculated mtbf (telcordia) tr-nwt-000332 3.9 10 6 hrs. tb = 70c calculated mtbf (mil-217) mil-hdbk-217f 3.5 10 6 hrs. tb = 70c field demonstrated mtbf 10 6 hrs. see our website for details note 1: start-up guaranteed above 10.3v, but will operate down to 9v note 2: higher values of isolation capacitance can be added external to the module. note 3: maximum value is 400ms for dc current limit and short circuit fault conditions
product # iq18xxxskxxx phone 1-888-567-9596 www.synqor.com doc.# 005-0005462 rev. c 05/27/10 page 3 technical specification iq18xxxskxxx 1.0 10.0 100.0 1,000.0 10,000.0 0 1 2 3 4 5 6 7 8 9 10 increase in vout (%) trim resistance (kohms) 1.2 v 1.5 v 1.8 v 2.5 v 3.3 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 voltages 100.0 1,000.0 10,000.0 100,000.0 0 1 2 3 4 5 6 7 8 9 10 increase in vout (%) trim resistance (kohms) 5 v 7 v 12 v 15 v 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 family figures (all output voltages) nominal vout 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. common figure 3: trim graph for trim-up 1.2 to 3.3v outputs. common figure 4: trim graph for trim-up 5 to 15v outputs. common figure 5: trim graph for trim down.
product # iq18xxxskxxx phone 1-888-567-9596 www.synqor.com doc.# 005-0005462 rev. c 05/27/10 page 4 technical specification electrical characteristics (1.2 vout) & figures iq18012skx20 electrical characteristics (1.2vout) ta = 25c, airfow rate = 300 lfm, vin = 18vdc unless otherwise noted; full operating temperature range is -40c to +100c baseplate temperature with appropriate power derating. specifcations subject to change without notice. parameter min. typ. max. units notes & conditions input characteristics maximum input current 5.0 a vin min; trim up; in current limit no-load input current 165 210 ma disabled input current 10 14 ma response to input transient 0.04 v 250v/ms; see figure 6 input terminal ripple current 175 ma rms recommended input fuse 20 a fast acting external fuse recommended output characteristics output voltage set point 1.188 1.2 1.212 v output voltage regulation over line 0.1 0.3 % over load 0.1 0.3 % over temperature -18 18 mv total output voltage range 1.170 1.230 v over sample, line, load, temperature & life output voltage ripple and noise 20mhz bandwidth; see note 1 peak-to-peak 0 35 70 mv full load rms 9 20 mv full load operating output current range 0 20 a subject to thermal derating output dc current-limit inception 24.0 a back-drive current limit while enabled 1.3 a negative current drawn from output back-drive current limit while disabled 2 ma negative current drawn from output maximum output capacitance 10,000 f vout nominal at full load (resistive load); see note 2 output voltage during load current transient step change in output current (0.1a/s) 90 mv 50% to 75% to 50% iout max settling time 200 s to within 1% vout nom output voltage trim range -10 10 % across pins 8&4; common figures 3-5; see note 3 output voltage remote sense range 10 % across pins 8&4 output over-voltage protection 1.4 1.6 1.8 v over full temp range efficiency 100% load 75 % see figure 1 for effciency curve 50% load 74 % see figure 1 for effciency curve note 1: output is terminated with 1f ceramic and 15f low-esr tantalum capacitors. for applications requiring reduced output voltage ripple and noise, consult synqor applications support (e-mail: support@synqor.com) note 2: recommended minimum output capacitance is 100uf note 3: trim-up range is limited below 10% at low line and full load. contact synqor applications support for more detail (email: support@synqor.com) input: 9-36v output: 1.2v current: 20a part no.: iq18012skx20
product # iq18xxxskxxx phone 1-888-567-9596 www.synqor.com doc.# 005-0005462 rev. c 05/27/10 page 5 technical specification 0 2 4 6 8 10 12 14 0 5 10 15 20 load current (a) power dissipation (w) 9 vin 18 vin 36 vin 60 65 70 75 80 85 90 95 100 0 5 10 15 20 load current (a) efficiency (%) 9 vin 18 vin 36 vin 0 5 10 15 20 25 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 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) figure 1: effciency 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 max. output power derating vs. ambient air temperature for airfow rates of 100 lfm through 400 lfm. air fows 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 airfow rates of 100 lfm through 400 lfm. air fows across the converter from pin 3 to pin 1 (nominal input voltage). figure 5: output voltage response in the sm version to step-change in load current (50%-75%-50% of iout(max); di/dt = 0.1 a/s). load cap: 100 f electrolytic cap and 1 f ceramic cap. ch 1: vout (100 mv/div), ch 2: iout (10 a/div). figure 6: output voltage response in the sm version to step-change in input voltage (250 v/ms). load cap: 100 f, electrolytic output capacitance. ch 1: vout (100 mv/div), ch 2: vin (20 v/div). input: 9-36v output: 1.2v current: 20a part no.: iq18012skx20
product # iq18xxxskxxx phone 1-888-567-9596 www.synqor.com doc.# 005-0005462 rev. c 05/27/10 page 6 technical specification electrical characteristics (1.5 vout) & figures iq18015skx14 electrical characteristics (1.5vout) ta = 25c, airfow rate = 300 lfm, vin = 18vdc unless otherwise noted; full operating temperature range is -40c to +100c baseplate temperature with appropriate power derating. specifcations subject to change without notice. parameter min. typ. max. units notes & conditions input characteristics maximum input current 4.5 a vin min; trim up; in current limit no-load input current 200 250 ma disabled input current 10 14 ma response to input transient 0.04 v 250v/ms; see figure 6 input terminal ripple current 175 ma rms recommended input fuse 20 a fast acting external fuse recommended output characteristics output voltage set point 1.485 1.5 1.515 v output voltage regulation over line 0.1 0.3 % over load 0.1 0.3 % over temperature -23 23 mv total output voltage range 1.463 1.538 v over sample, line, load, temperature & life output voltage ripple and noise 20mhz bandwidth; see note 1 peak-to-peak 0 30 60 mv full load rms 5 10 mv full load operating output current range 0 14 a subject to thermal derating output dc current-limit inception 16.8 a back-drive current limit while enabled 1.5 a negative current drawn from output back-drive current limit while disabled 2 ma negative current drawn from output maximum output capacitance 10,000 f vout nominal at full load (resistive load); see note 2 output voltage during load current transient step change in output current (0.1a/s) 75 mv 50% to 75% to 50% iout max settling time 80 s to within 1% vout nom output voltage trim range -10 10 % across pins 8&4; common figures 3-5 output voltage remote sense range 10 % across pins 8&4 output over-voltage protection 1.7 1.9 2.1 v over full temp range efficiency 100% load 77 % see figure 1 for effciency curve 50% load 76 % see figure 1 for effciency curve note 1: output is terminated with 1f ceramic and 15f low-esr tantalum capacitors. for applications requiring reduced output voltage ripple and noise, consult synqor applications support (e-mail: support@synqor.com) note 2: recommended minimum output capacitance is 100uf note 3: trim-up range is limited below 10% at low line and full load. contact synqor applications support for more detail (email: support@synqor.com) input: 9-36v output: 1.5v current: 14a part no.: iq18015skx14
product # iq18xxxskxxx phone 1-888-567-9596 www.synqor.com doc.# 005-0005462 rev. c 05/27/10 page 7 technical specification 0 2 4 6 8 10 12 14 0 5 10 load current (a) power dissipation (w) 9 vin 18 vin 36 vin 60 65 70 75 80 85 90 95 100 0 5 10 load current (a) efficiency (%) 9 vin 18 vin 36 vin 0 2 4 6 8 10 12 14 16 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 14 16 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) figure 1: effciency 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 max. output power derating vs. ambient air temperature for airfow rates of 100 lfm through 400 lfm. air fows 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 airfow rates of 100 lfm through 400 lfm. air fows across the converter from pin 3 to pin 1 (nominal input voltage). figure 5: output voltage response in the sm version to step-change in load current (50%-75%-50% of iout(max); di/dt = 0.1 a/s). load cap: 100 f electrolytic cap and 1 f ceramic cap. ch 1: vout (100 mv/div), ch 2: iout (10 a/div). figure 6: output voltage response in the sm version to step-change in input voltage (250 v/ms). load cap: 100 f, electrolytic output capacitance. ch 1: vout (100 mv/div), ch 2: vin (20 v/div). input: 9-36v output: 1.5v current: 14a part no.: iq18015skx14
product # iq18xxxskxxx phone 1-888-567-9596 www.synqor.com doc.# 005-0005462 rev. c 05/27/10 page 8 technical specification electrical characteristics (1.8 vout) & figures iq18018skx14 electrical characteristics (1.8vout) ta = 25c, airfow rate = 300 lfm, vin = 18vdc unless otherwise noted; full operating temperature range is -40c to +100c baseplate temperature with appropriate power derating. specifcations subject to change without notice. parameter min. typ. max. units notes & conditions input characteristics maximum input current 5.0 a vin min; trim up; in current limit no-load input current 225 280 ma disabled input current 10 14 ma response to input transient 0.04 v 250v/ms; see figure 6 input terminal ripple current 220 ma rms recommended input fuse 20 a fast acting external fuse recommended output characteristics output voltage set point 1.782 1.8 1.818 v output voltage regulation over line 0.1 0.3 % over load 0.1 0.3 % over temperature -27 27 mv total output voltage range 1.755 1.845 v over sample, line, load, temperature & life output voltage ripple and noise 20mhz bandwidth; see note 1 peak-to-peak 0 35 70 mv full load rms 8 20 mv full load operating output current range 0 14 a subject to thermal derating; see note 4 output dc current-limit inception 16.8 a back-drive current limit while enabled 1.8 a negative current drawn from output back-drive current limit while disabled 2 ma negative current drawn from output maximum output capacitance 10,000 f vout nominal at full load (resistive load); see note 2 output voltage during load current transient step change in output current (0.1a/s) 75 mv 50% to 75% to 50% iout max settling time 100 s to within 1% vout nom output voltage trim range -10 10 % across pins 8&4; common figures 3-5; see note 3 output voltage remote sense range 10 % across pins 8&4 output over-voltage protection 2.1 2.3 2.5 v over full temp range efficiency 100% load 79 % see figure 1 for effciency curve 50% load 78 % see figure 1 for effciency curve note 1: output is terminated with 1f ceramic and 15f low-esr tantalum capacitors. for applications requiring reduced output voltage ripple and noise, consult synqor applications support (e-mail: support@synqor.com) note 2: recommended minimum output capacitance is 100uf note 3: trim-up range is limited below 10% at low line and full load. contact synqor applications support for more detail (email: support@synqor.com) note 4: output current range limited below rated at input voltages less than 12v input: 9-36v output: 1.8v current: 14a part no.: iq18018skx14
product # iq18xxxskxxx phone 1-888-567-9596 www.synqor.com doc.# 005-0005462 rev. c 05/27/10 page 9 technical specification 0 3 6 9 12 15 18 0 5 10 load current (a) power dissipation (w) 9 vin 18 vin 36 vin 60 65 70 75 80 85 90 95 100 0 5 10 load current (a) efficiency (%) 9 vin 18 vin 36 vin 0 2 4 6 8 10 12 14 16 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 14 16 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) figure 1: effciency 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 max. output power derating vs. ambient air temperature for airfow rates of 100 lfm through 400 lfm. air fows 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 airfow rates of 100 lfm through 400 lfm. air fows across the converter from pin 3 to pin 1 (nominal input voltage). figure 5: output voltage response in the sm version to step-change in load current (50%-75%-50% of iout(max); di/dt = 0.1 a/s). load cap: 100 f electrolytic cap and 1 f ceramic cap. ch 1: vout (100 mv/div), ch 2: iout (10 a/div). figure 6: output voltage response in the sm version to step-change in input voltage (250 v/ms). load cap: 100 f, electrolytic output capacitance. ch 1: vout (100 mv/div), ch 2: vin (20 v/div). input: 9-36v output: 1.8v current: 14a part no.: iq18018skx14
product # iq18xxxskxxx phone 1-888-567-9596 www.synqor.com doc.# 005-0005462 rev. c 05/27/10 page 10 technical specification electrical characteristics (2.5 vout) & figures iq18025skx10 electrical characteristics (2.5vout) ta = 25c, airfow rate = 300 lfm, vin = 18vdc unless otherwise noted; full operating temperature range is -40c to +100c baseplate temperature with appropriate power derating. specifcations subject to change without notice. parameter min. typ. max. units notes & conditions input characteristics maximum input current 5.0 a vin min; trim up; in current limit no-load input current 220 280 ma disabled input current 10 14 ma response to input transient 0.06 v 250v/ms; see figure 6 input terminal ripple current 280 ma rms recommended input fuse 20 a fast acting external fuse recommended output characteristics output voltage set point 2.475 2.5 2.525 v output voltage regulation over line 0.1 0.3 % over load 0.1 0.3 % over temperature -38 38 mv total output voltage range 2.438 2.563 v over sample, line, load, temperature & life output voltage ripple and noise 20mhz bandwidth; see note 1 peak-to-peak 0 35 70 mv full load rms 8 20 mv full load operating output current range 0 10 a subject to thermal derating output dc current-limit inception 12.0 a back-drive current limit while enabled 2.8 a negative current drawn from output back-drive current limit while disabled 2 ma negative current drawn from output maximum output capacitance 10,000 f vout nominal at full load (resistive load); see note 2 output voltage during load current transient step change in output current (0.1a/s) 100 mv 50% to 75% to 50% iout max settling time 100 s to within 1% vout nom output voltage trim range -10 10 % across pins 8&4; common figures 3-5; see note 3 output voltage remote sense range 10 % across pins 8&4 output over-voltage protection 2.8 3.1 3.3 v over full temp range efficiency 100% load 77 % see figure 1 for effciency curve 50% load 78 % see figure 1 for effciency curve note 1: output is terminated with 1f ceramic and 15f low-esr tantalum capacitors. for applications requiring reduced output voltage ripple and noise, consult synqor applications support (e-mail: support@synqor.com) note 2: recommended minimum output capacitance is 100uf note 3: trim-up range is limited below 10% at low line and full load. contact synqor applications support for more detail (email: support@synqor.com) input: 9-36v output: 2.5v current: 10a part no.: iq18025skx10
product # iq18xxxskxxx phone 1-888-567-9596 www.synqor.com doc.# 005-0005462 rev. c 05/27/10 page 11 technical specification 0 2 4 6 8 10 12 14 0 2 4 6 8 10 load current (a) power dissipation (w) 9 vin 18 vin 36 vin 60 65 70 75 80 85 90 95 100 0 2 4 6 8 10 load current (a) efficiency (%) 9 vin 18 vin 36 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) figure 1: effciency 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 max. output power derating vs. ambient air temperature for airfow rates of 100 lfm through 400 lfm. air fows 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 airfow rates of 100 lfm through 400 lfm. air fows across the converter from pin 3 to pin 1 (nominal input voltage). figure 5: output voltage response in the sm version to step-change in load current (50%-75%-50% of iout(max); di/dt = 0.1 a/s). load cap: 100 f electrolytic cap and 1 f ceramic cap. ch 1: vout (100 mv/div), ch 2: iout (10 a/div). figure 6: output voltage response in the sm version to step-change in input voltage (250 v/ms). load cap: 100 f, electrolytic output capacitance. ch 1: vout (100 mv/div), ch 2: vin (20 v/div). input: 9-36v output: 2.5v current: 10a part no.: iq18025skx10
product # iq18xxxskxxx phone 1-888-567-9596 www.synqor.com doc.# 005-0005462 rev. c 05/27/10 page 12 technical specification electrical characteristics (3.3 vout) & figures iq18033skx08 electrical characteristics (3.3vout) ta = 25c, airfow rate = 300 lfm, vin = 18vdc unless otherwise noted; full operating temperature range is -40c to +100c baseplate temperature with appropriate power derating. specifcations subject to change without notice. parameter min. typ. max. units notes & conditions input characteristics maximum input current 5.0 a vin min; trim up; in current limit no-load input current 200 250 ma disabled input current 10 14 ma response to input transient 0.05 v 250v/ms; see figure 6 input terminal ripple current 240 ma rms recommended input fuse 20 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 20mhz bandwidth; see note 1 peak-to-peak 0 25 50 mv full load rms 5 10 mv full load operating output current range 0 8 a subject to thermal derating output dc current-limit inception 9.6 a back-drive current limit while enabled 3.3 a negative current drawn from output back-drive current limit while disabled 2 ma negative current drawn from output maximum output capacitance 10,000 f vout nominal at full load (resistive load); see note 2 output voltage during load current transient step change in output current (0.1a/s) 175 mv 50% to 75% to 50% iout max settling time 80 s to within 1% vout nom output voltage trim range -10 10 % across pins 8&4; common figures 3-5; see note 3 output voltage remote sense range 10 % across pins 8&4 output over-voltage protection 3.9 4.1 4.5 v over full temp range efficiency 100% load 81 % see figure 1 for effciency curve 50% load 80 % see figure 1 for effciency curve note 1: output is terminated with 1f ceramic and 15f low-esr tantalum capacitors. for applications requiring reduced output voltage ripple and noise, consult synqor applications support (e-mail: support@synqor.com) note 2: recommended minimum output capacitance is 100uf note 3: trim-up range is limited below 10% at low line and full load. contact synqor applications support for more detail (email: support@synqor.com) input: 9-36v output: 3.3v current: 8a part no.: iq18033skx08
product # iq18xxxskxxx phone 1-888-567-9596 www.synqor.com doc.# 005-0005462 rev. c 05/27/10 page 13 technical specification 0 3 6 9 12 15 0 3 6 load current (a) power dissipation (w) 9 vin 18 vin 36 vin 60 65 70 75 80 85 90 95 100 0 3 6 load current (a) efficiency (%) 9 vin 18 vin 36 vin 0 3 6 9 12 15 18 21 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 3 6 9 12 15 18 21 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) figure 1: effciency 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 max. output power derating vs. ambient air temperature for airfow rates of 100 lfm through 400 lfm. air fows 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 airfow rates of 100 lfm through 400 lfm. air fows across the converter from pin 3 to pin 1 (nominal input voltage). figure 5: output voltage response in the sm version to step-change in load current (50%-75%-50% of iout(max); di/dt = 0.1 a/s). load cap: 100 f electrolytic cap and 1 f ceramic cap. ch 1: vout (200 mv/div), ch 2: iout (5 a/ div). figure 6: output voltage response in the sm version to step-change in input voltage (250 v/ms). load cap: 100 f, electrolytic output capacitance. ch 1: vout (100 mv/div), ch 2: vin (20 v/div). input: 9-36v output: 3.3v current: 8a part no.: iq18033skx08
product # iq18xxxskxxx phone 1-888-567-9596 www.synqor.com doc.# 005-0005462 rev. c 05/27/10 page 14 technical specification electrical characteristics (5 vout) & figures iq18050skx05 electrical characteristics (5.0vout) ta = 25c, airfow rate = 300 lfm, vin = 18vdc unless otherwise noted; full operating temperature range is -40c to +100c baseplate temperature with appropriate power derating. specifcations subject to change without notice. parameter min. typ. max. units notes & conditions input characteristics maximum input current 5.0 a vin min; trim up; in current limit no-load input current 175 220 ma disabled input current 10 14 ma response to input transient 0.07 v 250v/ms; see figure 6 input terminal ripple current 250 ma rms recommended input fuse 20 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 20mhz bandwidth; see note 1 peak-to-peak 0 25 50 mv full load rms 5 10 mv full load operating output current range 0 5 a subject to thermal derating output dc current-limit inception 6.0 a back-drive current limit while enabled 3.0 a negative current drawn from output back-drive current limit while disabled 2 ma negative current drawn from output maximum output capacitance 5,000 f vout nominal at full load (resistive load); see note 2 output voltage during load current transient step change in output current (0.1a/s) 275 mv 50% to 75% to 50% iout max settling time 100 s to within 1% vout nom output voltage trim range -10 10 % across pins 8&4; common figures 3-5; see note 3 output voltage remote sense range 10 % across pins 8&4 output over-voltage protection 5.8 6.2 6.6 v over full temp range efficiency 100% load 80 % see figure 1 for effciency curve 50% load 81 % see figure 1 for effciency curve note 1: output is terminated with 1f ceramic and 15f low-esr tantalum capacitors. for applications requiring reduced output voltage ripple and noise, consult synqor applications support (e-mail: support@synqor.com) note 2: recommended minimum output capacitance is 100uf note 3: trim-up range is limited below 10% at low line and full load. contact synqor applications support for more detail (email: support@synqor.com) input: 9-36v output: 5v current: 5a part no.: iq18050skx05
product # iq18xxxskxxx phone 1-888-567-9596 www.synqor.com doc.# 005-0005462 rev. c 05/27/10 page 15 technical specification 0 3 6 9 12 15 0 2 4 load current (a) power dissipation (w) 9 vin 18 vin 36 vin 60 65 70 75 80 85 90 95 100 0 2 4 load current (a) efficiency (%) 9 vin 18 vin 36 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) figure 1: effciency 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 max. output power derating vs. ambient air temperature for airfow rates of 100 lfm through 400 lfm. air fows 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 airfow rates of 100 lfm through 400 lfm. air fows across the converter from pin 3 to pin 1 (nominal input voltage). figure 5: output voltage response in the sm version to step-change in load current (50%-75%-50% of iout(max); di/dt = 0.1 a/s). load cap: 100 f electrolytic cap and 1 f ceramic cap. ch 1: vout (500 mv/div), ch 2: iout (5 a/ div). figure 6: output voltage response in the sm version to step-change in input voltage (250 v/ms). load cap: 100 f, electrolytic output capacitance. ch 1: vout (100 mv/div), ch 2: vin (20 v/div). input: 9-36v output: 5v current: 5a part no.: iq18050skx05
product # iq18xxxskxxx phone 1-888-567-9596 www.synqor.com doc.# 005-0005462 rev. c 05/27/10 page 16 technical specification electrical characteristics (7 vout) & figures iq18070skx04 electrical characteristics (7.0vout) ta = 25c, airfow rate = 300 lfm, vin = 18vdc unless otherwise noted; full operating temperature range is -40c to +100c baseplate temperature with appropriate power derating. specifcations subject to change without notice. parameter min. typ. max. units notes & conditions input characteristics maximum input current 5.0 a vin min; trim up; in current limit no-load input current 180 230 ma disabled input current 10 14 ma response to input transient 0.05 v 250v/ms; see figure 6 input terminal ripple current 250 ma rms recommended input fuse 20 a fast acting external fuse recommended output characteristics output voltage set point 6.93 7 7.07 v output voltage regulation over line 0.1 0.3 % over load 0.1 0.3 % over temperature -105 105 mv total output voltage range 6.825 7.175 v over sample, line, load, temperature & life output voltage ripple and noise 20mhz bandwidth; see note 1 peak-to-peak 0 25 50 mv full load rms 5 10 mv full load operating output current range 0 3.5 a subject to thermal derating output dc current-limit inception 4.2 a back-drive current limit while enabled 2.5 a negative current drawn from output back-drive current limit while disabled 2 ma negative current drawn from output maximum output capacitance 4,000 f vout nominal at full load (resistive load); see note 2 output voltage during load current transient step change in output current (0.1a/s) 250 mv 50% to 75% to 50% iout max settling time 100 s to within 1% vout nom output voltage trim range -10 10 % across pins 8&4; common figures 3-5 output voltage remote sense range 10 % across pins 8&4 output over-voltage protection 8.2 8.5 8.7 v over full temp range efficiency 100% load 82 % see figure 1 for effciency curve 50% load 82 % see figure 1 for effciency 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) note 2: recommended minimum output capacitance is 100uf note 3: trim-up range is limited below 10% at low line and full load. contact synqor applications support for more detail (email: support@synqor.com) input: 9-36v output: 7v current: 3.5a part no.: iq18070skx04
product # iq18xxxskxxx phone 1-888-567-9596 www.synqor.com doc.# 005-0005462 rev. c 05/27/10 page 17 technical specification 0 2 4 6 8 10 12 14 0 1 2 3 load current (a) power dissipation (w) 9 vin 18 vin 36 vin 60 65 70 75 80 85 90 95 100 0 1 2 3 load current (a) efficiency (%) 9 vin 18 vin 36 vin 0 1 1 2 2 3 3 4 4 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 1 2 2 3 3 4 4 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) figure 1: effciency 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 max. output power derating vs. ambient air temperature for airfow rates of 100 lfm through 400 lfm. air fows 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 airfow rates of 100 lfm through 400 lfm. air fows across the converter from pin 3 to pin 1 (nominal input voltage). figure 5: output voltage response in the sm version to step-change in load current (50%-75%-50% of iout(max); di/dt = 0.1 a/s). load cap: 100 f electrolytic cap and 1 f ceramic cap. ch 1: vout (500 mv/div), ch 2: iout (2 a/ div). figure 6: output voltage response in the sm version to step-change in input voltage (250 v/ms). load cap: 100 f, electrolytic output capacitance. ch 1: vout (100 mv/div), ch 2: vin (20 v/div). input: 9-36v output: 7v current: 3.5a part no.: iq18070skx04
product # iq18xxxskxxx phone 1-888-567-9596 www.synqor.com doc.# 005-0005462 rev. c 05/27/10 page 18 technical specification electrical characteristics (12 vout) & figures iq18120skx02 electrical characteristics (12.0vout) ta = 25c, airfow rate = 300 lfm, vin = 18vdc unless otherwise noted; full operating temperature range is -40c to +100c baseplate temperature with appropriate power derating. specifcations subject to change without notice. parameter min. typ. max. units notes & conditions input characteristics maximum input current 5.0 a vin min; trim up; in current limit no-load input current 250 310 ma disabled input current 10 14 ma response to input transient 0.15 v 250v/ms; see figure 6 input terminal ripple current 250 ma rms recommended input fuse 20 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 20mhz bandwidth; see note 1 peak-to-peak 0 40 80 mv full load rms 8 20 mv full load operating output current range 0 2 a subject to thermal derating output dc current-limit inception 2.4 a back-drive current limit while enabled 2.5 a negative current drawn from output back-drive current limit while disabled 2 ma negative current drawn from output maximum output capacitance 1,500 f vout nominal at full load (resistive load); see note 2 output voltage during load current transient step change in output current (0.1a/s) 250 mv 50% to 75% to 50% iout max settling time 150 s to within 1% vout nom output voltage trim range -10 10 % across pins 8&4; common figures 3-5 output voltage remote sense range 10 % across pins 8&4 output over-voltage protection 15.0 15.5 16.0 v over full temp range efficiency 100% load 79 % see figure 1 for effciency curve 50% load 77 % see figure 1 for effciency 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) note 2: recommended minimum output capacitance is 100uf note 3: trim-up range is limited below 10% at low line and full load. contact synqor applications support for more detail (email: support@synqor.com) input: 9-36v output: 12v current: 2a part no.: iq18120skx02
product # iq18xxxskxxx phone 1-888-567-9596 www.synqor.com doc.# 005-0005462 rev. c 05/27/10 page 19 technical specification 0 2 4 6 8 10 12 14 16 18 20 0 1 2 load current (a) power dissipation (w) 9 vin 18 vin 36 vin 60 65 70 75 80 85 90 95 100 0 1 2 load current (a) efficiency (%) 9 vin 18 vin 36 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) figure 1: effciency 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 max. output power derating vs. ambient air temperature for airfow rates of 100 lfm through 400 lfm. air fows 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 airfow rates of 100 lfm through 400 lfm. air fows across the converter from pin 3 to pin 1 (nominal input voltage). figure 5: output voltage response in the sm version to step-change in load current (50%-75%-50% of iout(max); di/dt = 0.1 a/s). load cap: 100 f electrolytic cap and 1 f ceramic cap. ch 1: vout (500 mv/div), ch 2: iout (1 a/ div). figure 6: output voltage response in the sm version to step-change in input voltage (250 v/ms). load cap: 100 f, electrolytic output capacitance. ch 1: vout (200 mv/div), ch 2: vin (20 v/div). input: 9-36v output: 12v current: 2a part no.: iq18120skx02
product # iq18xxxskxxx phone 1-888-567-9596 www.synqor.com doc.# 005-0005462 rev. c 05/27/10 page 20 technical specification electrical characteristics (15 vout) & figures input: 9-36v output: 15v current: 1.7a part no.: iq18150skx02 iq18150skx02 electrical characteristics (15.0vout) ta = 25c, airfow rate = 300 lfm, vin = 18vdc unless otherwise noted; full operating temperature range is -40c to +100c baseplate temperature with appropriate power derating. specifcations subject to change without notice. parameter min. typ. max. units notes & conditions input characteristics maximum input current 5.0 a vin min; trim up; in current limit no-load input current 350 440 ma disabled input current 10 14 ma response to input transient 0.08 v 250v/ms; see figure 6 input terminal ripple current 250 ma rms recommended input fuse 20 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 20mhz bandwidth; see note 1 peak-to-peak 75 150 mv full load rms 15 30 mv full load operating output current range 0 1.7 a subject to thermal derating output dc current-limit inception 2.0 a back-drive current limit while enabled 3.0 a negative current drawn from output back-drive current limit while disabled 2 ma negative current drawn from output maximum output capacitance 1,500 f vout nominal at full load (resistive load); see note 2 output voltage during load current transient step change in output current (0.1a/s) 175 mv 50% to 75% to 50% iout max settling time 250 s to within 1% vout nom output voltage trim range -10 10 % across pins 8&4; common figures 3-5 output voltage remote sense range 10 % across pins 8&4 output over-voltage protection 17.5 19.0 20.0 v over full temp range efficiency 100% load 80 % see figure 1 for effciency curve 50% load 74 % see figure 1 for effciency 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) note 2: recommended minimum output capacitance is 100uf note 3: trim-up range is limited below 10% at low line and full load. contact synqor applications support for more detail (email: support@synqor.com)
product # iq18xxxskxxx phone 1-888-567-9596 www.synqor.com doc.# 005-0005462 rev. c 05/27/10 page 21 technical specification 0 3 6 9 12 15 18 21 24 0.0 0.5 1.0 1.5 load current (a) power dissipation (w) 9 vin 18 vin 36 vin 60 65 70 75 80 85 90 95 100 0.0 0.5 1.0 1.5 load current (a) efficiency (%) 9 vin 18 vin 36 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) figure 1: effciency 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 max. output power derating vs. ambient air temperature for airfow rates of 100 lfm through 400 lfm. air fows 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 airfow rates of 100 lfm through 400 lfm. air fows across the converter from pin 3 to pin 1 (nominal input voltage). figure 5: output voltage response in the sm version to step-change in load current (50%-75%-50% of iout(max); di/dt = 0.1 a/s). load cap: 100 f electrolytic cap and 1 f ceramic cap. ch 1: vout (500 mv/div), ch 2: iout (1 a/ div). figure 6: output voltage response in the sm version to step-change in input voltage (250 v/ms). load cap: 100 f, electrolytic output capacitance. ch 1: vout (200 mv/div), ch 2: vin (20 v/div). input: 9-36v output: 15v current: 1.7a part no.: iq18150skx02
product # iq18xxxskxxx phone 1-888-567-9596 www.synqor.com doc.# 005-0005462 rev. c 05/27/10 page 22 technical specification iq18xxxskxxx 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 50k 50k 100pf application section application section
product # iq18xxxskxxx phone 1-888-567-9596 www.synqor.com doc.# 005-0005462 rev. c 05/27/10 page 23 technical specification iq18xxxskxxx 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 % ) = ( _ application section
product # iq18xxxskxxx phone 1-888-567-9596 www.synqor.com doc.# 005-0005462 rev. c 05/27/10 page 24 technical specification iq18xxxskxxx 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 i n external input filter trim v in( + ) i l oa d c l oa d v out(+ ) r trim-up or r trim-down v sense( + ) on/off v in( _ ) v out( _ ) v sense( _ ) electrolytic capacitor c l v in( + ) v in( _ ) 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. application section
product # iq18xxxskxxx phone 1-888-567-9596 www.synqor.com doc.# 005-0005462 rev. c 05/27/10 page 25 technical specification iq18xxxskxxx 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 application section
product # iq18xxxskxxx phone 1-888-567-9596 www.synqor.com doc.# 005-0005462 rev. c 05/27/10 page 26 technical specification iq18xxxskxxx standards & qualification testing parameter notes & conditions standards compliance ul 60950-1: 2003 basic insulation can/csa-c22.2 no. 60950-1:2003 en60950-1:2001 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 altitude 2 70,000 feet (21 km), see note note: a conductive cooling design is generally needed for high altitude applications because of naturally poor convective cooling at rare atmospheres.
product # iq18xxxskxxx phone 1-888-567-9596 www.synqor.com doc.# 005-0005462 rev. c 05/27/10 page 27 technical specification iq18xxxskxxx notes 1) baseplate flatness tolerance is 0.004" (.10mm) tir for surface. 2) pins 1-3, 5-7 are 0.040 (1.02mm) diameter, with 0.080 (2.03mm) diameter standoff shoulders. 3) pins 4 and 8 are 0.062 (1.57 mm) diameter with 0.100" (2.54 mm) diameter standoff shoulders. 4) all pins: material C copper alloy; finish C matte tin over nickel plate 5) undimensioned components are shown for visual reference only. 6) weight: 1.14oz (32.3g) typical 7) all dimensions in inches (mm) tolerances: x.xx +/-0.02 in. (x.x +/-0.5mm) x.xxx +/-0.010 in. (x.xx +/-0.25mm) 8) workmanship: meets or exceeds ipc-a610 class ii 9) recommended pin length is 0.03 (0.76mm) greater than the pcb thickness. pin designations pin name function 1 vin(+) positive input voltage 2 on/off ttl input to turn converter on and off, referenced to vin(C), with internal pull up. 3 vin(C) negative input voltage 4 vout(C) negative output voltage 5 sense(C) negative remote sense 1 6 trim output voltage trim 2 7 sense(+) positive remote sense 3 8 vout(+) positive output voltage notes: 1) sense(C) should be connected to vout(C) either remotely or at the converter. 2) leave trim pin open for nominal output voltage. 3) sense(+) should be connected to vout(+) either remotely or at the converter. 1.036.020 (26.310.5) .150 (3.81) .600 (15.24) .450 (11.43) .300 (7.62) .600 (15.24) .300 (7.62) .218.020 (5.540.5) overall height 0.500.025 (12.70.63) side view 0.18 (4.6) .143.020 (3.630.5) 1.436.020 (36.470.5) 1.10 (27.9) top view 4 5 6 7 8 1 2 3 mech1 title encased mechanical drawing
product # iq18xxxskxxx phone 1-888-567-9596 www.synqor.com doc.# 005-0005462 rev. c 05/27/10 page 28 technical specification iq18xxxskxxx .017 .020 [ 0,43 0,5 ] .21 [ 5,3 ] .94 [ 23,9 ] .14 [ 3,6 ] .218 .020 [ 5,54 0,5 ] .350 .020 [ 8,89 0,5 ] .450 .020 [ 11,43 0,5 ] ] 1.12 [ 28,3 ] 1.436 [ 36,47 ] .13 [ 3,2 ] bottomside clearance .010 [ 0,25 ] .300 [ 7,62 ] .600 [ 15,24 ] top view 1 1 2 3 notes 1) applied torque per screw should not exceed 5in-lb (3in-lb recommended). 2) baseplate flatness tolerance is 0.01 (.25mm) tir for surface. 3) pins 1-3, 5-7 are 0.040 (1.02mm) diameter, with 0.080 (2.03mm) diameter standoff shoulders. 4) pins 4 and 8 are 0.062 (1.57 mm) diameter with 0.100" (2.54 mm) diameter standoff shoulders. 5) all pins: material C copper alloy; finish C matte tin over nickel plate 6) weight: 1.22 oz (34.6g) typical 7) undimensioned components are shown for visual reference only. 8) all dimensions in inches (mm) tolerances: x.xx +/-0.02 in. (x.x +/-0.5mm) x.xxx +/-0.010 in. (x.xx +/-0.25mm) 9) workmanship: meets or exceeds ipc-a610 class ii 10) recommended pin length is 0.03 (0.76mm) greater than the pcb thickness. 11) a thermal interface material is required to assure proper heat transfer from the flanged baseplate to the cooling surface. thermal grease, conductive pads, compounds, and other similar products are available from many heatsink manufacturers. pin designations pin name function 1 vin(+) positive input voltage 2 on/off ttl input to turn converter on and off, referenced to vin(C), with internal pull up. 3 vin(C) negative input voltage 4 vout(C) negative output voltage 5 sense(C) negative remote sense 1 6 trim output voltage trim 2 7 sense(+) positive remote sense 3 8 vout(+) positive output voltage notes: 1) sense(C) should be connected to vout(C) either remotely or at the converter. 2) leave trim pin open for nominal output voltage. 3) sense(+) should be connected to vout(+) either remotely or at the converter. mech2 title full feature mechanical drawing
product # iq18xxxskxxx phone 1-888-567-9596 www.synqor.com doc.# 005-0005462 rev. c 05/27/10 page 29 technical specification iq18xxxskxxx notes 1) baseplate flatness tolerance is 0.004" (.10mm) tir for surface. 2) pins 1-3, 5-7 are 0.040 (1.02mm) diameter, with 0.080 (2.03mm) diameter standoff shoulders. 3) pins 4 and 8 are 0.062 (1.57 mm) diameter with 0.100" (2.54 mm) diameter standoff shoulders. 4) all pins: material C copper alloy; finish C matte tin over nickel plate 5) undimensioned components are shown for visual reference only. 6) weight: 1.14oz (32.3g) typical 7) all dimensions in inches (mm) tolerances: x.xx +/-0.02 in. (x.x +/-0.5mm) x.xxx +/-0.010 in. (x.xx +/-0.25mm) 8) workmanship: meets or exceeds ipc-a610 class ii 9) recommended pin length is 0.03 (0.76mm) greater than the pcb thickness. pin designations pin name function 1 vin(+) positive input voltage 2 on/off ttl input to turn converter on and off, referenced to vin(C), with internal pull up. 3 vin(C) negative input voltage 4 vout(C) negative output voltage 5 sense(C) negative remote sense 1 6 trim output voltage trim 2 7 sense(+) positive remote sense 3 8 vout(+) positive output voltage notes: 1) sense(C) should be connected to vout(C) either remotely or at the converter. 2) leave trim pin open for nominal output voltage. 3) sense(+) should be connected to vout(+) either remotely or at the converter. 1.036.020 (26.310.5) .150 (3.81) .600 (15.24) .450 (11.43) .300 (7.62) .600 (15.24) .300 (7.62) .218.020 (5.540.5) overall height 0.500.025 (12.70.63) side view 0.18 (4.6) .143.020 (3.630.5) 1.436.020 (36.470.5) 1.10 (27.9) top view 4 5 6 7 8 1 2 3 mech3 title flanged mechanical drawing
product # iq18xxxskxxx phone 1-888-567-9596 www.synqor.com doc.# 005-0005462 rev. c 05/27/10 page 30 technical specification iq18xxxskxxx 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 1 8 0 1 2 s k c 2 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 document. 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 ordering information model number input voltage output voltage max output current iq18012skw20xyz 18v 1.2v 20a iq18015skw14xyz 18v 1.5v 14a iq18018skw14xyz 18v 1.8v 14a iq18025skw10xyz 18v 2.5v 10a iq18033skw08xyz 18v 3.3v 8a iq18050skw05xyz 18v 5v 5a iq18070skw04xyz 18v 7v 3.5a iq18120skw02xyz 18v 12v 2a iq18150skw02xyz 18v 15v 1.7a options description thermal design enable logic pin style feature set c - encased v - encased with flanged baseplate n - negative r - 0.180" s - standard

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