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vpt100+2800s series ds90220b 11314 4th avenue west, suite 206 everett, wa 98204 http://www.vpt-inc.com sales information: phone: (425) 353-3010 fax: (425) 353-4030 e-mail: vptsales@vpt-inc.com 1 high reliability cots dc-dc converters description the vpt100+ series of isolated cots dc-dc converters is a cost effective solution for many demanding high reliability applications. a wide input voltage range accommodates nominal 28v inputs including avionics, mobile, ground systems, and other applications. a high efficiency design using synchronous rectification reduces input power requirements and eases thermal management. low input and output ripple, fixed operating frequency, current sharing capability , and companion emi filters simplify system design and compliance. a proven design heritage, no optoisolators and a rugged all metal package ensure long term reliability. the vpt100 series is intended for harsh environments including severe vibration, shock and temperature cycling. testing is to jesd22, mil-std- 810, and mil-std-883. these converters are designed and manufactured in the usa in a facility certified to iso9001, j-std-001 and ipc-a-610. this product may incorporate one or more of the following u.s. patents: 5,784,266 5,790,389 5,963,438 5,999,433 6,005,780 6,084,792 6,118,673 features ? high reliability at low cost ? parallel up to 5 units with current sharing ? up to 100 watts maximum output power ? high efficiency, up to 91% ? wide input voltage range: 16 to 40 volts per mil-std-704 and mil-std-1275 ? high input transient voltage: 50 volts for 1 sec ? input undervoltage lockout ? fixed frequency ? output voltage trim (+10% / -20% ) ? fast startup time with soft start ? current limit protection ? short circuit protection ? magnetic feedback, no optoisolators ? wide temperature range, -55c to 100c ? six sided metal rugged enclosure ? meets mil-std-461c/d/e conducted emissions requirements when used with a vptf series emi filter figure 1 ? vpt100+2800s converter ( not to scale )
vpt100+2800s series ds90220b 2 specifications (t case = -55c to +100c, v in = +28v 5%, full load, unless otherwise specified) absolute maximum ratings input voltage (continuous) 40 v dc junction temperature rise to case +17c input voltage (transient, 1 second) 50 vo lts storage temperature -55c to +125c output power 1 100 watts lead solder temperature (10 seconds) 300c power dissipation (full load, t case = +100c) 18 watts weight ( maximum ) 76 grams vpt100+283r3s vpt100+2805s parameter conditions min typ max min typ max units static continuous 16 28 40 16 28 40 v input voltage 4 transient, 1 sec - - 50 - - 50 v inhibited - - 5 - - 5 ma current no load - 80 150 - 80 150 ma ripple current full load, 20hz to 10mhz - - 180 - - 200 ma p-p inhibit pin input 4 0 - 1.5 0 - 1.5 v inhibit pin open circuit voltage 4 9.0 11.0 14.0 9.0 11.0 14.0 v uvlo turn on 14.5 - 15.8 14.5 - 15.8 v uvlo turn off 4 14.0 - 15.0 14.0 - 15.0 v v out t case = 25c 3.25 3.30 3.35 4.925 5.00 5.075 v output voltage v out t case = -55c to +100c 3.217 3.30 3.383 4.875 5.00 5.125 v power 3 0 - 66 0 - 100 w current 3 v out 0 - 20 0 - 20 a ripple voltage v out full load, 20hz to 10mhz - - 150 - - 150 mv p-p line regulation v out v in = 16v to 40v - - 20 - - 20 mv load regulation v out no load to full load - - 50 - - 50 mv share pin voltage 4 0 - 5 0 - 5 v current share accuracy 4 - 5 - - 5 - % efficiency 85 90 - 85 90 - % overload 4 - - 24 - - 24 w load fault power dissipation short circuit - - 24 - - 24 w capacitive load 4 - - 1000 - - 1000 f switching frequency 230 260 290 230 260 290 khz v h -v l =5v sync frequency range duty cycle = 50% 240 - 325 240 - 325 khz isolation 500 v dc 100 - - 100 - - m ? mtbf (mil-hdbk-217f) gm @ t c = 55c - 344 - - 344 - khrs dynamic load step output transient v out - - 250 - - 250 mv pk load step recovery 2 half load to full load - - 300 - - 300 sec line step output transient 4 v out - - 300 - - 300 mv pk line step recovery 2, 4 v in = 16v to 40v - - 150 - - 150 sec turn on delay v out - 4 10 - 4 10 msec turn on overshoot v in = 0v to 28v - 0 15 - 0 25 mv pk notes: 1. dependant on output voltage. 2. time for out put voltage to settle within 1% of its nominal value. 3. derate linearly to 0 at 110c. 4. verified by qualification testing.
vpt100+2800s series ds90220b 3 specifications (t case = -55c to +100c, v in = +28v 5%, full load, unless otherwise specified) absolute maximum ratings input voltage (continuous) 40 v dc junction temperature rise to case +17c input voltage (transient, 1 second) 50 vo lts storage temperature -55c to +125c output power 1 100 watts lead solder temperature (10 seconds) 300c power dissipation (full load, t case = +100c) 18 watts weight ( maximum ) 76 grams vpt100+2807s vpt100+2812s parameter conditions min typ max min typ max units static continuous 16 28 40 16 28 40 v input voltage 4 transient, 1 sec - - 50 - - 50 v inhibited - - 5 - - 5 ma current no load - 100 200 - 130 200 ma ripple current full load, 20hz to 10mhz - - 200 - - 200 ma p-p inhibit pin input 4 0 - 1.5 0 - 1.5 v inhibit pin open circuit voltage 4 9.0 11.0 14.0 9.0 11.0 14.0 v uvlo turn on 14.5 - 15.8 14.5 - 15.8 v uvlo turn off 4 14.0 - 15.0 14.0 - 15.0 v v out t case = 25c 6.895 7.00 7.105 11.82 12.0 12.18 v output voltage v out t case = -55c to +100c 6.825 7.00 7.175 11.70 12.0 12.30 v power 3 0 - 100 0 - 100 w current 3 v out 0 - 14.28 0 - 8.33 a ripple voltage v out full load, 20hz to 10mhz - - 150 - - 150 mv p-p line regulation v out v in = 16v to 40v - - 20 - - 50 mv load regulation v out no load to full load - - 70 - - 100 mv share pin voltage 4 0 - 5 0 - 5 v current share accuracy 4 - 5 - - 5 - % efficiency 87 90 - 87 90 - % overload 4 - - 24 - - 24 w load fault power dissipation short circuit - - 24 - - 24 w capacitive load 4 - - 1000 - - 500 f switching frequency 300 340 380 300 340 380 khz v h -v l =5v sync frequency range duty cycle = 50% 300 - 380 300 - 380 khz isolation 500 v dc 100 - - 100 - - m ? mtbf (mil-hdbk-217f) gm @ t c = 55c - 344 - - 344 - khrs dynamic load step output transient v out - - 750 - - 500 mv pk load step recovery 2 half load to full load - - 300 - - 300 sec line step output transient 4 v out - - 750 - - 300 mv pk line step recovery 2, 4 v in = 16v to 40v - - 150 - - 150 sec turn on delay v out - 4 10 - 4 10 msec turn on overshoot v in = 0v to 28v - 0 25 - 0 50 mv pk notes: 1. dependant on output voltage. 2. time for out put voltage to settle within 1% of its nominal value. 3. derate linearly to 0 at 110c. 4. verified by qualification testing.
vpt100+2800s series ds90220b 4 specifications (t case = -55c to +100c, v in = +28v 5%, full load, unless otherwise specified) absolute maximum ratings input voltage (continuous) 40 v dc junction temperature rise to case +17c input voltage (transient, 1 second) 50 vo lts storage temperature -55c to +125c output power 1 100 watts lead solder temperature (10 seconds) 300c power dissipation (full load, t case = +100c) 18 watts weight ( maximum ) 76 grams vpt100+2815s vpt100+2828s parameter conditions min typ max min typ max units static continuous 16 28 40 16 28 40 v input voltage 4 transient, 1 sec - - 50 - - 50 v inhibited - - 5 - - 5 ma current no load - 130 200 - 30 100 ma ripple current full load, 20hz to 10mhz - - 200 - - 200 ma p-p inhibit pin input 4 0 - 1.5 0 - 1.5 v inhibit pin open circuit voltage 4 9.0 11.0 14.0 9.0 11.0 14.0 v uvlo turn on 14.5 - 15.8 14.5 - 15.8 v uvlo turn off 4 14.0 - 15.0 14.0 - 15.0 v v out t case = 25c 14.775 15.0 15.225 27.44 28.0 28.56 v output voltage v out t case = -55c to +100c 14.625 15.0 15.375 27.16 28.0 28.84 v power 3 0 - 100 0 - 100 w current 3 v out 0 - 6.67 0 - 3.57 a ripple voltage v out full load, 20hz to 10mhz - - 150 - - 300 mv p-p line regulation v out v in = 16v to 40v - - 50 - - 50 mv load regulation v out no load to full load - - 100 - - 100 mv share pin voltage 4 0 - 5 0 - 5 v current share accuracy 4 - 5 - - 5 - % efficiency 87 91 - 85 88 - % overload 4 - - 24 - - 24 w load fault power dissipation short circuit - - 24 - - 28 w capacitive load 4 - - 500 - - 500 f switching frequency 300 340 380 300 340 380 khz v h -v l =5v sync frequency range duty cycle = 50% 300 - 380 300 - 380 khz isolation 500 v dc 100 - - 100 - - m ? mtbf (mil-hdbk-217f) gm @ t c = 55c - 344 - - 344 - khrs dynamic load step output transient v out - - 500 - - 1400 mv pk load step recovery 2 half load to full load - - 300 - - 300 sec line step output transient 4 v out - - 300 - - 1400 mv pk line step recovery 2, 4 v in = 16v to 40v - - 150 - - 300 sec turn on delay v out - 4 10 - 4 10 msec turn on overshoot v in = 0v to 28v - 0 50 - 0 50 mv pk notes: 1. dependant on output voltage. 2. time for out put voltage to settle within 1% of its nominal value. 3. derate linearly to 0 at 110c. 4. verified by qualification testing.
vpt100+2800s series ds90220b 5 block diagram under voltage shut down primary housekeeping supply pwm cont rol voltage and current amplifiers pin 1 28v in pin 5 in com q1 +v out pin 10 pin 6 out com inh pin 3 feedback magnetic share pin 4 +s pin 9 -s pin 7 q2 q3 current sense t1 sync pin 2 trim pin 8 note: not applicable to vpt100+2828s figure 2 connection diagram vpt100+2800s dc-dc converter + - 28 vdc 5 28v out 3 out com 1 28v in case 5 in com 3 inh 1 28v in 10 +v out 6 out com load -s 7 +s 9 trim 8 2 sync vptf10-28 emi filter 2 in com 4 case 4 share figure 3 (shown with optional emi filter)
vpt100+2800s series ds90220b 6 parallel connection diagrams vpt 100+2800s dc-dc convert er + - 28 vdc 10 28v out 6 out com 1 28v in 4 in com case 5 in com 3 inh 1 28v in 10 +v out 6 out com load -s 7 +s 9 trim 8 2 sync 2 28v in 7 out com vptf20-28 emi filter 5 in com 9 28v out 8 case 3 nc 4 share vpt 100+2800s dc-dc convert er 5 in com 3 inh 1 28v in 10 +v out 6 out com -s 7 +s 9 trim 8 2 sync 4 share vpt 100+2800s dc-dc convert er 5 in com 3 inh 1 28v in 10 +v out 6 out com -s 7 +s 9 trim 8 2 sync 4 share case case case figure 4 ? current sharing parallel connection for multiple converters (sync connection is optional)
vpt100+2800s series ds90220b 7 connection diagrams 5 in com 3 inh 1 28v in optional capacitor bias 11.5v 10k figure 5 ?inhibit circuit + - + - 0.75v ri 30 10k 30 rt +v out 10 +s 9 trim 8 -s 7 out com 6 (trim down) r-trim (trim up) r-trim (shown with optional capacitor for turn-on delay) figure 6 ?output voltage trim circuit output voltage trim the output voltage can be trimmed down by connecting a resistor between the trim pin and the +v out pin, or can be trimmed up by connecting a resistor betw een the trim pin and the out com pin as shown in figure 6. the maximum trim range is +10% up and ?20% down. the appropriate resistor values versus the output voltage are given in the trim table below. vpt100+283r3s vpt100+2805s vpt100+2807s vpt100+2812s vpt100+2815s vpt100+2828s +v out (v) r trim ( ? ) +v out (v) r trim ( ? ) +v out (v) r trim ( ? ) +v out (v) r trim ( ? ) +v out (v) r trim ( ? ) +v out (v) r trim ( ? ) 3.60 3.94k 5.5 980 7.7 714 13.2 1.14k 16.50 686 30.5 720 3.55 8.92k 5.4 4.72k 7.5 5.00k 13.0 2.39k 16.25 1.69k 30.0 1.46k 3.50 16.4k 5.3 10.9k 7.3 15.0k 12.8 4.26k 16.00 3.19k 29.5 2.68k 3.45 28.8k 5.2 23.4k 7.1 65.0k 12.6 7.39k 15.75 5.7k 29.0 5.12k 3.40 53.5k 5.1 60.5k 7.0 ? 12.4 13.6k 15. 50 10.7k 28.5 12.3k 3.35 127k 5.0 -- 6.9 605k 12. 2 32.4k 15.25 25.9k 28.0 -- 3.30 -- 4.9 404k 6.7 188k 12.0 -- 15.00 -- 27.5 551k 3.25 486k 4.8 189k 6.5 105k 11.8 548k 14.75 552k 27.0 265k 3.20 226k 4.7 118k 6. 3 69.3k 11.6 266k 14.50 270k 26.5 171k 3.15 140k 4.6 82.4k 6.1 49.4k 11.4 172k 14.25 175k 26.0 125k 3.10 96.9k 4.5 61.1k 5.9 36.8k 11.2 126k 14.00 128k 25.5 97.4k 3.05 71.3k 4.4 46.9k 5.7 28.1k 11.0 97.4k 13.75 99.5k 25.0 79k 3.00 54.2k 4.3 36.8k 5.6 24.6k 10.8 78.6k 13.50 80.6k 24.5 65.9k 2.95 42k 4.2 29.2k 10.6 65.3k 13.25 67k 24.0 56.1k 2.90 32.8k 4.1 23.3k 10.4 55.2k 13. 00 56.9k 23.5 48.5k 2.85 25.7k 4.0 18.5k 10. 2 47.4k 12.75 49k 23.0 42.4k 2.80 20.1k 10.0 41. 1k 12.50 42.6k 22.5 37.4k 2.75 15.4k 9. 8 36k 12.25 37.5k 2.70 11.5k 9.6 31.8k 12.00 33.2k 2.65 8.26k
vpt100+2800s series ds90220b 8 efficiency performance curves (t case = 25c, full load, unless otherwise specified) v in = 16v v in = 28v v in = 40v 75 80 85 90 95 0224466 output pow er (w) efficiency (%) 75 80 85 90 95 0 25 50 75 100 output pow er (w) efficiency (%) figure 7 ? vpt100+283r3s figure 8 ? vpt100+2805s efficiency (%) vs. output power (w) efficiency (%) vs. output power (w) 75 80 85 90 95 0255075100 output power (w) efficiency (%) 75 80 85 90 95 0 25 50 75 100 output pow er (w) efficiency (%) figure 9 ? vpt100+2807s figure 10 ? vpt100+2812s efficiency (%) vs. output power (w) efficiency (%) vs. output power (w)
vpt100+2800s series ds90220b 9 efficiency performance curves (t case = 25c, full load, unless otherwise specified) v in = 16v v in = 28v v in = 40v 75 80 85 90 95 0 25 50 75 100 output pow er (w) efficiency (%) 75 80 85 90 95 10 35 60 85 output power (w) efficiency (%) figure 11 ? vpt100+2815s figure 12 ? vpt100+2828s efficiency (%) vs. output power (w) efficiency (%) vs. output power (w)
vpt100+2800s series ds90220b 10 emi performance curves (t case = 25c, v in = +28v 5%, full load, unless otherwise specified) emission level [db a] mil-std-461c ce03 narrowband 80 60 40 20 0 0.01 0.1 frequency [mhz] 1 emission level [db a] mil-std-461c ce03 narrowband 40 30 20 10 0 1 10 50 frequency [mhz] figure 13 ? vpt100+2800s without emi filter figure 14 ? vpt100+2800s with vptf series emi filter emission level [db v] mil-std-461e ce102 narrowband 90 70 50 30 10 0.01 0.1 frequency [mhz] .25 emission level [db v] mil-std-461e ce102 narrowband 90 70 50 30 10 0.1 1 10 frequency [mhz] figure 15 ? vpt100+2800s without emi filter figure 16 ? vpt100+2800s with vptf series emi filter
vpt100+2800s series ds90220b 11 package specifications top view side view bottom view figure 17 ? package and pinout (dimensional limits are 0.005? unless otherwise stated) package notes: 1. case temperature is measured on the center of the baseplate surface. 2. materials: baseplate ? aluminum, conductive conversion coating. cover ? nickel plated. pins ? copper, gold over nickel plating. 3. mounting holes are not threaded. recommended fastener is 4-40. pin function 1 28v in 2 sync 3 inhibit 4 share 5 in com 6 out com 7 -sense 8 trim 9 +sense 10 +v out
vpt100+2800s series ds90220b 12 package pin description pin function description 1 28vin positive input voltage connection 2 sync input synchronization signal. ttl squa rewave, 5vpp, 20 - 80% duty cycle, internally capacitively coupled. 3 inhibit this is an open collector input. logic low = disabled output. connect the inhibit pin to input common to disable the output. unconnected, open collector or open drain = enabled output. 4 share current share connection 5 incom input return connection 6 outcom output return connection 7 -sense output return remote sense. compensate fo r up to 0.5v total drop (positive and return). 8 trim trim output voltage to +10%, -20% of nominal value. leave open if not used. 9 +sense positive output voltage remote sense. compensate for up to 0.5v total drop (positive and return). 10 +v out positive output voltage connection 100% environmental screening screening condition internal visual ipc-a-610 stabilization bake mil-std-883, met hod 1008, condition b, 125c, 24 hours temperature cycling mil-std-883, method 1010, condition b, -55c to +125c, 10 cycles burn-in mil-std-883, method 1015, 96 hours at +100c final electrical 100% at 25c external visual mil-std-883, method 2009
vpt100+2800s series ds90220b 13 ordering information vpt100+ 28 05 s 1 2 3 4 (1) (2) (3) (4) product series nominal input voltage output voltage number of outputs vpt100+ 28 28 volts 3r3 05 07 12 15 28 3.3 volts 5 volts 7 volts 12 volts 15 volts 28 volts s single contact information to request a quotation or place orders please contact your sales representative or the vpt inc. sales department at: phone : (425) 353-3010 fax : (425) 353-4030 e-mail : vptsales@vpt-inc.com all information contained in this datasheet is believed to be accurate, however, no responsibility is assumed for possible erro rs or omissions. the products or specifications c ontained herein are subject to change without notice.

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