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dvfl2800s series 12010dsb 17921 bothell-everett highway, suite 108 bothell, wa 98012 http://www.vpt-inc.com sales information: phone: (425) 487-4850 fax: (425) 487-4802 e-mail: sales@vpt-inc.com 1 high reliability hybrid dc-dc converters description the dvfl series of high reliability dc-dc converters is operable over the full military (-55 c to +125 c) temperature range with no power derating. unique to the dvfl series is a magnetic feedback circuit that is radiation immune. operating at a nominal fixed frequency of 500 khz, these regulated, isolated units utilize well-controlled undervoltage lockout circuitry to eliminate slow start-up problems. the current sharing function allows a maximum of five units to be connected in parallel to boost the total output power to 5 times. the output voltage is trimmable up to +10% or down ?20%. these converters are designed and manufactured in a facility qualified to iso9001, compliant to as9000, and certified to mil-prf-38534 and mil-std-883. features ? high reliability ? parallel up to 5 units with current sharing ? output voltage trim up +10% or down ?20% ? wide input voltage range: 16 to 40 volts per mil-std-704 ? up to 120 watts output power ? radiation immune magnetic feedback circuit ? no use of optoisolators ? undervoltage lockout ? industry standard pinout ? input transient voltage: 50 volts for 1 second ? radiation hardened version available ? precision seam welded hermetic package ? high power density: > 80 w/in 3 ? custom versions available ? additional environmental screening available ? meets mil-std-461c and mil-std-461d emc requirements when used with a dvme28 emi filter ? mil-prf-38534 element evaluated components figure 1 ? dvfl2800s dc-dc converter ( not to scale )
dvfl2800s series 12010dsb 2 specifications (t case = -55c to +125c, v in = +28v 5%, full load, unless otherwise specified) absolute maximum ratings input voltage (continuous) 40 v dc junction temperature rise to case +15c input voltage (transient, 1 second) 50 vo lts storage temperature -65c to +150c output power 1 120 watts lead solder temperature (10 seconds) 270c power dissipation (full load, t case = +125c) 41 watts weight 100 grams dvfl283r3s dvfl2805s 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 1 - - 3 - - 3 ma inhibited 2 - - 70 - - 70 ma current no load - - 120 - - 120 ma ripple current full load, 20hz to 10mhz - - 80 - - 80 ma p-p inh1 pin input 4 0 - 1.5 0 - 1.5 v inh2 pin input 4 0 - 1.0 0 - 1.0 v inh1 pin open circuit voltage 4 10.5 - 13.5 10.5 - 13.5 v inh2 pin open circuit voltage 4 5.0 - 8.0 5.0 - 8.0 v uvlo turn on 14.5 - 16.0 14.5 - 16.0 v uvlo turn off 4 14.0 - 15.5 14.0 - 15.5 v v out t case = 25c 3.267 3.30 3.333 4.95 5.00 5.05 v output voltage v out t case = -55c to +125c 3.25 3.30 3.35 4.925 5.00 5.075 v power 0 - 66 0 - 100 w current v out - - 20 - - 20 a ripple voltage v out full load, 20hz to 10mhz - - 80 - - 80 mv p-p line regulation v out v in = 16v to 40v - - 20 - - 20 mv load regulation v out no load to full load - - 80 - - 100 mv voltage trim 4 v out full load -10 - 10 -20 - 10 % share pin voltage 4 2.0 - 3.0 2.0 - 3.0 v efficiency 68 - - 72 - - % overload 4 - - 80 - - 80 w load fault power dissipation short circuit - - 80 - - 80 w capacitive load 4 - - 1000 - - 1000 f switching frequency 450 500 600 450 500 600 khz sync frequency range v h ? v l = 5v duty cycle = 20% - 80% 500 - 600 500 - 600 khz isolation 500 v dc 100 - - 100 - - m ? thermal resistance case to ambient ( ca) - 12 - - 12 - c/w mtbf (mil-hdbk-217f) aif @ t c = 55c - 400 - - 400 - khrs notes: 1. dependant on output voltage. 2. time for output voltage to settle within 1% of its nominal value. 3. derate linearly to 0 at 135c. 4. verified by qualification testing.
dvfl2800s series 12010dsb 3 specifications (t case = -55c to +125c, v in = +28v 5%, full load, unless otherwise specified) absolute maximum ratings input voltage (continuous) 40 v dc junction temperature rise to case +15c input voltage (transient, 1 second) 50 vo lts storage temperature -65c to +150c output power 1 120 watts lead solder temperature (10 seconds) 270c power dissipation (full load, t case = +125c) 41 watts weight 100 grams dvfl283r3s dvfl2805s parameter conditions min typ max min typ max units dynamic load step output transient v out - - 400 - - 400 mv pk load step recovery 2 half load to full load - - 500 - - 500 sec line step output transient 4 v out - 300 600 - 300 600 mv pk line step recovery 2, 4 v in = 16v to 40v - 300 500 - 300 500 sec turn on delay v out - - 20 - - 20 msec turn on overshoot 2 v in = 0v to 28v - - 15 - - 25 mv pk notes: 1. dependant on output voltage. 2. time for output voltage to settle within 1% of its nominal value. 3. derate linearly to 0 at 135c. 4. verified by qualification testing.
dvfl2800s series 12010dsb 4 specifications (t case = -55c to +125c, v in = +28v 5%, full load, unless otherwise specified) absolute maximum ratings input voltage (continuous) 40 v dc junction temperature rise to case +15c input voltage (transient, 1 second) 50 vo lts storage temperature -65c to +150c output power 1 120 watts lead solder temperature (10 seconds) 270c power dissipation (full load, t case = +125c) 41 watts weight 100 grams dvfl2812s dvfl2815s 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 1 - - 3 - - 3 ma inhibited 2 - - 70 - - 70 ma current no load - - 120 - - 120 ma ripple current full load, 20hz to 10mhz - - 80 - - 80 ma p-p inh1 pin input 4 0 - 1.5 0 - 1.5 v inh2 pin input 4 0 - 1.0 0 - 1.0 v inh1 pin open circuit voltage 4 10.5 - 13.5 10.5 - 13.5 v inh2 pin open circuit voltage 4 5.0 - 8.0 5.0 - 8.0 v uvlo turn on 14.0 - 16.0 14.0 - 16.0 v uvlo turn off 4 14.0 - 15.5 14.0 - 15.5 v v out t case = 25c 11.88 12.00 12.12 14.85 15.00 15.15 v output voltage v out t case = -55c to +125c 11.82 12.00 12.18 14.775 15.00 15.225 v power - - 110 - - 120 w current v out - - 9.2 - - 8.0 a ripple voltage v out full load, 20hz to 10mhz - - 80 - - 80 mv p-p line regulation v out v in = 16v to 40v - - 20 - - 20 mv load regulation v out no load to full load - - 120 - - 150 mv voltage trim 4 v out full load -20 - 10 -20 - 10 % share pin voltage 4 2.0 - 3.0 2.0 - 3.0 v efficiency 79 - - 80 - - % overload 4 - - 80 - - 80 w load fault power dissipation short circuit - - 80 - - 80 w capacitive load 4 - - 500 - - 500 f switching frequency 450 500 600 450 500 600 khz sync frequency range v h ? v l = 5v duty cycle = 20% - 80% 500 - 600 500 - 600 khz isolation 500 v dc 100 - - 100 - - m ? thermal resistance case to ambient ( ca) - 12 - - 12 - c/w mtbf (mil-hdbk-217f) aif @ t c = 55c - 400 - - 400 - khrs notes: 1. dependant on output voltage. 2. time for output voltage to settle within 1% of its nominal value. 3. derate linearly to 0 at 135c. 4. verified by qualification testing.
dvfl2800s series 12010dsb 5 specifications (t case = -55c to +125c, v in = +28v 5%, full load, unless otherwise specified) absolute maximum ratings input voltage (continuous) 40 v dc junction temperature rise to case +15c input voltage (transient, 1 second) 50 vo lts storage temperature -65c to +150c output power 1 120 watts lead solder temperature (10 seconds) 270c power dissipation (full load, t case = +125c) 41 watts weight 100 grams dvfl2812s dvfl2815s parameter conditions min typ max min typ max units dynamic load step output transient v out - - 800 - - 800 mv pk load step recovery 2 half load to full load - - 500 - - 500 sec line step output transient 4 v out - 600 1200 - 600 1200 mv pk line step recovery 2, 4 v in = 16v to 40v - 300 500 - 300 500 sec turn on delay v out - - 20 - - 20 msec turn on overshoot 2 v in = 0v to 28v - - 50 - - 50 mv pk notes: 1. dependant on output voltage. 2. time for output voltage to settle within 1% of its nominal value. 3. derate linearly to 0 at 135c. 4. verified by qualification testing.
dvfl2800s series 12010dsb 6 specifications (t case = -55c to +125c, v in = +28v 5%, full load, unless otherwise specified) absolute maximum ratings input voltage (continuous) 40 v dc junction temperature rise to case +15c input voltage (transient, 1 second) 50 vo lts storage temperature -65c to +150c output power 1 120 watts lead solder temperature (10 seconds) 270c power dissipation (full load, t case = +125c) 41 watts weight 100 grams DVFL285R2S parameter conditions min typ max units static continuous 16 28 40 v input voltage 4 transient, 1 sec - - 50 v inhibited 1 - - 3 ma inhibited 2 - - 70 ma current no load - - 120 ma ripple current full load, 20hz to 10mhz - - 80 ma p-p inh1 pin input 4 0 - 1.5 v inh2 pin input 4 0 - 1.0 v inh1 pin open circuit voltage 4 10.5 - 13.5 v inh2 pin open circuit voltage 4 5.0 - 8.0 v uvlo turn on 14.5 - 16.0 v uvlo turn off 4 14.0 - 15.5 v v out t case = 25c 5.148 5.20 5.252 v output voltage v out t case = -55c to +125c 5.122 5.20 5.278 v power - - 100 w current v out - - 19.2 a ripple voltage v out full load, 20hz to 10mhz - - 80 mv p-p line regulation v out v in = 16v to 40v - - 20 mv load regulation v out no load to full load - - 100 mv voltage trim 4 v out full load -20 - 10 % share pin voltage 4 2.0 - 3.0 v efficiency 72 - - % overload 4 - - 80 w load fault power dissipation short circuit - - 80 w capacitive load 4 - - 1000 f switching frequency 450 500 600 khz sync frequency range v h ? v l = 5v duty cycle = 20% - 80% 500 - 600 khz isolation 500 v dc 100 - - m ? thermal resistance case to ambient ( ca) - 12 - c/w mtbf (mil-hdbk-217f) aif @ t c = 55c - 400 - khrs notes: 1. dependant on output voltage. 2. time for output voltage to settle within 1% of its nominal value. 3. derate linearly to 0 at 135c. 4. verified by qualification testing.
dvfl2800s series 12010dsb 7 specifications (t case = -55c to +125c, v in = +28v 5%, full load, unless otherwise specified) absolute maximum ratings input voltage (continuous) 40 v dc junction temperature rise to case +15c input voltage (transient, 1 second) 50 vo lts storage temperature -65c to +150c output power 1 120 watts lead solder temperature (10 seconds) 270c power dissipation (full load, t case = +125c) 41 watts weight 100 grams DVFL285R2S parameter conditions min typ max units dynamic load step output transient v out - - 400 mv pk load step recovery 2 half load to full load - - 500 sec line step output transient 4 v out - 300 600 mv pk line step recovery 2, 4 v in = 16v to 40v - 300 500 sec turn on delay v out - - 20 msec turn on overshoot 2 v in = 0v to 28v - - 25 mv pk notes: 1. dependant on output voltage. 2. time for output voltage to settle within 1% of its nominal value. 3. derate linearly to 0 at 135c. 4. verified by qualification testing.
dvfl2800s series 12010dsb 8 block diagram under voltage s h u td o wn primary h ousekeepin g su ppl y pwm control voltage and current amplifiers secondary h ousekeepin g su ppl y pin 1 28v in pin 2 in com q1 +v out pin 7 pin 8 out com inh1 pin 4 feedback magnetic sync in pin 6 sync out pin 5 trim pin 3 +s pin 10 -s pin 9 share pin 11 inh2 pin 12 figure 2 connection diagram 2 in com 4 inh1 1 28v in 7 +v out 8 out com load + - 28 vdc -s 9 +s 10 inh2 12 sync in 6 figure 3
dvfl2800s series 12010dsb 9 inhibit drive connection diagram 2 in com 4 inh1 1 28v in optional capacitor bias 1 12v 30k optoisolator + - 8v 2k bias 2 inh2 12 out com 8 figure 4 ? isolated inhibit drive and internal equivalent circuit (shown with optional capacitor for turn-on delay) emi filter hookup diagram 2 in com 4 inh1 1 28v in 7 +v out 8 out com load + - 28 vdc 12 28v out 7 out com 1 28v in 6 in com case -s 9 +s 10 inh2 12 sync in 6 28v in 2 28v in 3 in com 4 in com 5 28v out 11 28v out 10 out com 9 out com 8 dvme28 emi filter dvfl2800s dc-dc converter figure 5 ? converter with emi filter
dvfl2800s series 12010dsb 10 parallel connection diagrams 2 in com 4 inh1 1 28v in 7 +v out 8 out com load + - 28 vdc 12 28v out 7 out com 1 28v in 6 in com case -s 9 +s 10 sync in 6 28v in 2 28v in 3 in com 4 in com 5 28v out 11 28v out 10 out com 9 out com 8 dvme28 emi filter dvfl2800s dc-dc converter case 2 in com 4 inh1 1 28v in 7 +v out 8 out com -s 9 +s 10 sync in 6 dvfl2800s dc-dc converter case figure 6 ? parallel connection without current sharing
dvfl2800s series 12010dsb 11 parallel connection diagrams 2 in com 4 inh1 1 28v in 7 +v out 8 out com load + - 28 vdc 12 28v out 7 out com 1 28v in 6 in com case -s 9 +s 10 sync in 6 28v in 2 28v in 3 in com 4 in com 5 28v out 11 28v out 10 out com 9 out com 8 dvme28 emi filter dvfl2800s dc-dc converter case 5 sync out 11 share 2 in com 4 inh1 1 28v in 7 +v out 8 out com -s 9 +s 10 sync in 6 dvfl2800s dc-dc converter case 5 sync out 11 share 2 in com 4 inh1 1 28v in 7 +v out 8 out com -s 9 +s 10 sync in 6 dvfl2800s dc-dc converter case 11 share figure 7 ? current sharing parallel connection for multiple converters
dvfl2800s series 12010dsb 12 output voltage trim the output voltage can be trimmed down by connecting a resistor between the trim pin (pin 3) and the +v out pin (pin 7), or can be trimmed up by connecting a resistor between the trim pin (pin 3) and the out com pin (pin 8). 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. figure 8 ? output voltage trim dvfl283r3s dvfl2805s dvfl2 85r2s dvfl2812s dvfl2815s +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 68.3k 5.5 35k 5.7 35k 13.2 5.8k 16.50 1.7k 3.55 85k 5.4 47.5k 5.6 47.5k 13.0 10k 16.25 5k 3.50 110k 5.3 68.3k 5.5 68. 3k 12.8 16.2k 16.00 10k 3.45 151.7k 5.2 110k 5.4 110k 12.6 26. 6k 15.75 18.3k 3.40 235k 5.1 235k 5.3 235k 12.4 47.3k 15.50 35k 3.35 485k 5.0 - 5.2 - 12.2 109k 15.25 85k 3.30 - 4.9 225k 5.1 245k 12.0 - 15.00 - 3.25 135k 4.8 100k 5.0 110k 11.8 454k 14.75 475k 3.20 55k 4.7 58.3k 4.9 65k 11.6 213k 14.50 225k 3.15 28.3k 4.6 37. 5k 4.8 42.5k 11. 4 134k 14.25 142k 3.10 15k 4.5 25k 4.7 29k 11.2 94k 14.00 100k 3.05 7k 4.4 16.7k 4.6 20k 11.0 70.1k 13.75 75k 3.00 1.7k 4.3 10.7k 4.5 13.6k 10.8 54.3k 13.50 58.3k 4.2 6.3k 4.4 8.8k 10.6 42.9k 13.25 46.4k 4.1 2.8k 4.3 5k 10.4 34.4k 13.00 37.5k 4.0 0 4.2 2k 10. 2 27.8k 12.75 30.6k 10.0 22.5k 12.50 25k 9.8 18.2k 12.25 20.5k 9.6 14.6k 12.00 16.7k
dvfl2800s series 12010dsb 13 efficiency performance curves (t case = 25c, full load, unless otherwise specified) v in = 16v v in = 28v v in = 40v 65 70 75 80 85 10 20 30 40 50 60 70 output power (w) 70 75 80 85 20 40 60 80 100 out put power (w) figure 9 ? dvfl283r3s figure 10 ? dvfl2805s / DVFL285R2S efficiency (%) vs. output power (w) efficiency (%) vs. output power (w) 70 75 80 85 90 30 50 70 90 110 out put power ( w) 70 75 80 85 90 3 0 50 70 9 0 110 output power (w) figure 11 ? dvfl2812s figure 12 ? dvfl2815s efficiency (%) vs. output power (w) efficiency (%) vs. output power (w)
dvfl2800s series 12010dsb 14 emi performance curves (t case = 25c, v in = +28v 5%, full load, unless otherwise specified) figure 13 ? dvfl2800s without emi filter figure 14 ? dvfl2800s with emi filter
dvfl2800s series 12010dsb 15 package specifications top view pin function 1 28v in 2 in com 3 trim 4 inh1 5 sync out 6 sync in 7 +v out 8 out com 9 -s 10 +s 11 share 12 inh2 side view figure 15 ? package and pinout (pin length is 0.01?, other dimensional li mits are 0.005? unless otherwise stated)
dvfl2800s series 12010dsb 16 package specifications (down-leaded) top view pin function 1 28v in 2 in com 3 trim 4 inh1 5 sync out 6 sync in 7 +v out 8 out com 9 -s 10 +s 11 share 12 inh2 side view figure 16 ? package and pinout (with down-leaded pin extensions added) (pin length is 0.01?, other dimensional li mits are 0.005? unless otherwise stated)
dvfl2800s series 12010dsb 17 package specifications (up-leaded) top view pin function 1 28v in 2 in com 3 trim 4 inh1 5 sync out 6 sync in 7 +v out 8 out com 9 -s 10 +s 11 share 12 inh2 side view figure 17 ? package and pinout (with up-leaded pin extensions added) (pin length is 0.01?, other dimensional li mits are 0.005? unless otherwise stated)
dvfl2800s series 12010dsb 18 package pin description pin function description 1 28v in positive input voltage connection 2 in com input common connection 3 trim trim output voltage to +10%, -20% of nominal value 4 inh1 logic low = disabled output. connecting the inhibit(1) pin to input common causes converter shutdown. logic high = enabled output. unconnected or open collector ttl. 5 sync out output synchronization signal 6 sync in input synchronization signal 7 +v out positive output voltage connection 8 out com output common connection 9 -s return sense 10 +s positive sense 11 share current share 12 inh2 logic low = disabled output. connecting the inhibit(2) pin to output common causes converter shutdown. logic high = enabled output. unconnected or open collector ttl.
dvfl2800s series 12010dsb 19 environmental screening (per mil-std-883 as referenced to mil-prf-38534, class h) screening mil-std-883 standard (no suffix) extended /es hb /hb pre-cap inspection method 2017, 2032 internal procedure ? ? ? temperature cycling method 1010, condition c method 1010, -55c to 125c ? ? constant acceleration method 2001, condition a method 2001, 500g ? ? burn-in method 1015, 160 hours at +125c 96 hours at +125c 24 hours at +125c ? ? ? hermeticity method 1014, fine leak, condition a method 1014, gross leak, condition c dip (1 x 10 -3 ) ? ? ? ? ? final electrical mil-prf-38534, group a 1 100% at 25c ? ? ? final inspection method 2009 ? ? ? note: 1. 100% r&r testing at ?55c, +25c, and +125c with all test data included in product shipment.
dvfl2800s series 12010dsb 20 ordering information dvfl 28 05 s r dl /hb - xxx 1 2 3 4 5 6 7 8 (1) (2) (3) (4) product series nominal input voltage output voltage number of outputs dvfl 28 28 volts 3r3 05 5r2 12 15 3.3 volts 5 volts 5.2 volts 12 volts 15 volts s single (5) (6) (7) (8) rad-hard option package option screening code additional screening code none r standard 100 krad none dl ul standard down-lead up-lead none /es /hb standard extended hb contact sales please contact your sales representative or the vpt inc. sales department for more information concerning additional environmental screening and testing, different input voltage, output voltage, power requirement, source inspection, and/or special element evaluation for space or other higher quality applications. contact information to request a quotation or place an order please contact your sales representative or the vpt inc. sales department at: phone : (425) 487-4850 fax : (425) 487-4802 e-mail : sales@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 cont ained herein are subject to change without notice.

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