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dvch2800s series 1x051dsc 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 hybrid dc-dc converters description the dvch 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 dvch series is a magnetic feedback circuit that is radiation immune. operating at a nominal fixed frequency of 400 khz, these regulated, isolated units utilize well controlled undervoltage lockout circuitry to eliminate slow start-up problems. these converters are designed and manufactured in a facility qualified to iso9001 and certified to mil- prf-38534 and mil-std-883. 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 ? very low output noise ? wide input voltage range: 12 to 50 volts per mil-std-704 ? up to 1.5 watts output power ? radiation immune magnetic feedback circuit ? no use of optoisolators ? undervoltage lockout ? indefinite short circuit protection ? current limit protection ? industry standard pinout ? high input transient voltage: 80 volts for 1 sec per mil-std-704a ? precision projection welded hermetic package ? high power density: > 7 w/in 3 ? custom versions available ? additional environmental screening available ? meets mil-std-461c and mil-std-461e emc requirements when used with a dvmsa28 emi filter ? mil-prf-38534 element evaluated components figure 1 ? dvch2800s dc-dc converter ( not to scale )
dvch2800s series 1x051dsc 2 specifications (t case = -55c to +125c, v in = +28v 5%, full load, unless otherwise specified) absolute maximum ratings input voltage (continuous) 50 v dc junction temperature rise to case +5c input voltage (transient, 1 second) 80 vo lts storage temperature -65c to +150c output power 1 1.5 watts lead solder temperature (10 seconds) 270c power dissipation (full load, t case = +125c) 0.6 watts weight (maximum) 11 grams dvch283r3s dvch2805s parameter conditions min typ max min typ max units static continuous 12 28 50 12 28 50 v input voltage 4 transient, 1 sec - - 80 - - 80 v inhibited - - 3.5 - - 3.5 ma current no load - - 10 - - 10 ma ripple current full load, 20hz to 10mhz - - 30 - - 30 ma p-p inhibit pin input 4 0 - 1.5 0 - 1.5 v inhibit pin open circuit voltage 4 8.0 9.0 11.0 8.0 9.0 11.0 v uvlo turn on 6.5 - 11.5 6.5 - 11.5 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 3.17 3.30 3.43 4.80 5.00 5.20 v power 3 0 - 1.0 0 - 1.5 w current 3 i out 0 - 0.3 0 - 0.3 a ripple voltage v out full load, 20hz to 10mhz - - 50 - - 50 mv p-p line regulation v out v in = 12v to 50v - - 150 - - 150 mv load regulation v out 10% load to full load - - 400 - - 400 mv load regulation v out 50% load to full load - - 250 - - 250 mv efficiency 69 75 - 72 79 - % overload 4 - - 3 - - 3 w load fault power dissipation short circuit - - 4 - - 4 w capacitive load 4 - - 500 - - 500 f switching frequency 325 400 475 325 400 475 khz isolation 500 v dc 100 - - 100 - - m ? mtbf (mil-hdbk-217f) aif @ t c = 55c - 841 - - 841 - khrs dynamic load step output transient 5 v out - 150 300 - 150 500 mv pk load step recovery 2 half load to full load - 200 500 - 400 600 sec line step output transient 4,5 v out - 150 300 - 250 400 mv pk line step recovery 2, 4 v in = 12v to 50v - 200 500 - 400 600 sec turn on delay v out - 15 20 - 15 20 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 135c. 4. verified by qualification testing. 5. does not include changes due to static regulation.
dvch2800s series 1x051dsc 3 specifications (t case = -55c to +125c, v in = +28v 5%, full load, unless otherwise specified) absolute maximum ratings input voltage (continuous) 50 v dc junction temperature rise to case +5c input voltage (transient, 1 second) 80 vo lts storage temperature -65c to +150c output power 1 1.5 watts lead solder temperature (10 seconds) 270c power dissipation (full load, t case = +125c) 0.6 watts weight (maximum) 11 grams dvch2812s dvch2815s parameter conditions min typ max min typ max units static continuous 12 28 50 12 28 50 v input voltage 4 transient, 1 sec - - 80 - - 80 v inhibited - - 3.5 - - 3.5 ma current no load - - 10 - - 10 ma ripple current full load, 20hz to 10mhz - - 30 - - 30 ma p-p inhibit pin input 4 0 - 1.5 0 - 1.5 v inhibit pin open circuit voltage 4 8.0 9.0 11.0 8.0 9.0 11.0 v uvlo turn on 6.5 - 11.5 6.5 - 11.5 v v out t case = 25c 11.88 12.0 12.12 14.85 15.0 15.15 v output voltage v out t case = -55c to +125c 11.52 12.0 12.48 14.40 15.0 15.60 v power 3 0 - 1.5 0 - 1.5 w current 3 i out 0 - 0.125 0 - 0.1 a ripple voltage v out full load, 20hz to 10mhz - - 50 - - 50 mv p-p line regulation v out v in = 12v to 50v - - 60 - - 60 mv load regulation v out 10% load to full load - - 700 - - 700 mv load regulation v out 50% load to full load - - 250 - - 250 mv efficiency 76 81 - 77 81 - % overload 4 - - 3 - - 3 w load fault power dissipation short circuit - - 4.5 - - 4.5 w capacitive load 4 - - 200 - - 200 f switching frequency 325 400 475 325 400 475 khz isolation 500 v dc 100 - - 100 - - m ? mtbf (mil-hdbk-217f) aif @ t c = 55c - 841 - - 841 - khrs dynamic load step output transient 5 v out - 100 300 - 100 300 mv pk load step recovery 2 half load to full load - 50 400 - 50 400 sec line step output transient 4,5 v out - 150 400 - 150 400 mv pk line step recovery 2, 4 v in = 12v to 50v - 100 400 - 100 400 sec turn on delay v out - 10 20 - 10 20 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 135c. 4. verified by qualification testing. 5. does not include changes due to static regulation.
dvch2800s series 1x051dsc 4 specifications (t case = -55c to +125c, v in = +28v 5%, full load, unless otherwise specified) absolute maximum ratings input voltage (continuous) 50 v dc junction temperature rise to case +5c input voltage (transient, 1 second) 80 vo lts storage temperature -65c to +150c output power 1 1.5 watts lead solder temperature (10 seconds) 270c power dissipation (full load, t case = +125c) 0.6 watts weight (maximum) 11 grams dvch285r2s parameter conditions min typ max units static continuous 12 28 50 v input voltage 4 transient, 1 sec - - 80 v inhibited - - 3.5 ma current no load - - 10 ma ripple current full load, 20hz to 10mhz - - 30 ma p-p inhibit pin input 4 0 - 1.5 v inhibit pin open circuit voltage 4 8.0 9.0 11.0 v uvlo turn on 6.5 - 11.5 v v out t case = 25c 5.15 5.20 5.25 v output voltage v out t case = -55c to +125c 5.00 5.20 5.40 v power 3 0 - 1.5 w current 3 i out 0 - 0.288 a ripple voltage v out full load, 20hz to 10mhz - - 50 mv p-p line regulation v out v in = 12v to 50v - - 150 mv load regulation v out 10% load to full load - - 400 mv load regulation v out 50% load to full load - - 250 mv efficiency 72 79 - % overload 4 - - 3 w load fault power dissipation short circuit - - 4 w capacitive load 4 - - 500 f switching frequency 325 400 475 khz isolation 500 v dc 100 - - m ? mtbf (mil-hdbk-217f) aif @ t c = 55c - 841 - khrs dynamic load step output transient 5 v out - 150 300 mv pk load step recovery 2 half load to full load - 400 600 sec line step output transient 4,5 v out - 250 400 mv pk line step recovery 2, 4 v in = 12v to 50v - 400 600 sec turn on delay v out - 15 20 msec turn on overshoot v in = 0v to 28v - 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 135c. 4. verified by qualification testing. 5. does not include changes due to static regulation.
dvch2800s series 1x051dsc 5 block diagram un der vo ltag e s h u td o wn pr imar y ho usek eepin g su pply pwm control vo ltag e am plifie r pin 1 28v in pin 2 in c om l1 c1 q1 rs1 t1 d1 c2 +v out pin 3 pin 4 ou t co m inh pin 7 figure 2 connection diagram 2 in c om 7 inh 1 28v in 3 +v out 4 ou t co m loa d + - 28 v dc figure 3
dvch2800s series 1x051dsc 6 inhibit drive connection diagrams 2 in c om 7 inh 1 28v in op tiona l ca pacit or bia s 9v 12k 2 in c om 7 inh 1 28v in op tiona l ca pacit or bia s 9v 12k optoisolator figure 4 ? internal inhibit circuit and recommended drive figure 5 ? isolated inhibit drive (shown with optional capacitor for turn-on delay) (shown with optional capacitor for turn-on delay) emi filter hookup diagram 2 in c om 7 inh 1 28v in 3 +v out 4 ou t co m loa d + - 28 v dc 2,3 28v out 5,6 ou t co m 1 28v in 7 in c om 4,8 dv msa2 8 emi filte r 5 dvch2800s d c-dc con vert er case figure 6 ? converter with emi filter
dvch2800s series 1x051dsc 7 efficiency performance curves (t case = 25c, full load, unless otherwise specified) v in = 16v v in = 28v v in = 40v 30 40 50 60 70 80 90 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 output pow er (w) efficiency (%) 30 40 50 60 70 80 90 0.1 0.3 0.5 0.7 0.9 1.1 1.3 1.5 output pow er (w) efficiency (%) figure 7 ? dvch283r3s figure 8 ? dvch2805s / dvch285r2s efficiency (%) vs. output power (w) efficiency (%) vs. output power (w) 30 40 50 60 70 80 90 0.1 0.3 0.5 0.7 0.9 1.1 1.3 1.5 output pow er (w) efficiency (%) 30 40 50 60 70 80 90 0.1 0.3 0.5 0.7 0.9 1.1 1.3 1.5 output pow er (w) efficiency (%) figure 9 ? dvch2812s figure 10 ? dvch2815s efficiency (%) vs. output power (w) efficiency (%) vs. output power (w)
dvch2800s series 1x051dsc 8 emi performance curves (t case = 25c, v in = +28v 5%, full load, unless otherwise specified) figure 11 ? dvch2800s without emi filter figure 12 ? dvch2800s with emi filter
dvch2800s series 1x051dsc 9 package specifications top view side view pin function 1 28v in 2 in com 3 +v out 4 out com 5 case 6 n/c 7 inhibit bottom view figure 13 ? package and pinout (dimensional limits are 0.005? unless otherwise stated)
dvch2800s series 1x051dsc 10 package pin description pin function description 1 28v in positive input voltage connection 2 in com input common connection 3 +v out positive output voltage connection 4 out com output common connection 5 case case connection 6 n/c no connection 7 inhibit logic low = disabled output. connecting the inhibit pin to input common causes converter shutdown. logic high = enabled output. unconnected or open collector ttl.
dvch2800s series 1x051dsc 11 environmental screening (100% tested per mil-std-883 as referenced to mil-prf-38534) notes: 1. 100% r&r testing at ?55c, +25c, and +125 c with all test data included in product shipment. 2. pind test certificate of co mpliance included in product shipment. 3. radiographic test cert ificate of compliance and film(s) included in product shipment. screening mil-std-883 standard (no suffix) extended /es hb /hb class h /h class k /k non- destructive bond pull method 2023 ? ? ? ? ? internal visual method 2017, 2032 internal procedure ? ? ? ? ? temperature cycling method 1010, condition c method 1010, -55c to 125c ? ? ? ? constant acceleration method 2001, 3000g, y1 direction method 2001, 500g, y1 direction ? ? ? ? pind method 2020, condition a 2 ? pre burn-in electrical 100% at 25c ? burn-in method 1015, 320 hours at +125c method 1015, 160 hours at +125c 96 hours at +125c 24 hours at +125c ? ? ? ? ? final electrical mil-prf-38534, group a 1 100% at 25c ? ? ? ? ? hermeticity method 1014, fine leak, condition a method 1014, gross leak, condition c dip (1 x 10 -3 ) ? ? ? ? ? ? ? ? ? radiography method 2012 3 ? external visual method 2009 ? ? ? ? ?
dvch2800s series 1x051dsc 12 ordering information dvch 28 05 s /hb - xxx 1 2 3 4 5 6 (1) (2) (3) product series nominal input voltage output voltage dvch 28 28 volts 3r3 05 5r2 12 15 3.3 volts 5 volts 5.2 volts 12 volts 15 volts (4) (5) (6) number of outputs screening code 1, 2 additional screening code s single none /es /hb /h /k standard extended hb class h class k contact sales notes: 1. contact the vpt inc. sales department for availability of class h (/h) or class k (/k) qualified products. 2. vpt inc. reserves the right to ship higher screen ed or smd products to meet lower screened orders at our sole discretion unless specifically forbidden by customer contract. 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.
dvch2800s series 1x051dsc 13 smd (standard microci rcuit drawing) numbers standard microcircuit drawing (smd) dvch2800s series similar part number *t.b.d. dvch283r3s/h *t.b.d. dvch2805s/h *t.b.d. dvch285r2s/h *t.b.d. dvch2812s/h *t.b.d. dvch2815s/h do not use the dvch2800s series similar part number for smd product acquisition. it is listed for reference only. for exact specifications for the smd product, refer to the smd drawing. smd?s can be downloaded from the dscc website at http://www.dscc.dla.mil/programs/smcr/ . the smd number listed above is for mil-prf-38534 class h screening, standard gold plated lead finish, and no rha (radiation hardness assurance) level. please reference the smd for other screening levels, lead finishes, and radiation levels. 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 cont ained herein are subject to change without notice.

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