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dvst2800t series ds90054e 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 dc-dc converters description the dvst series of high reliability dc-dc converters contains internal emi filtering and meets mil-std- 461c and mil-std-461d for conducted emissions, providing a one piece cots solution for power conversion applications. the dvst series is operable over a wide (-55c to +100c) temperature range with no power derating. unique to the dvst series is a magnetic feedback circuit that is radiation immune. the three low noise outputs are fully isolated from each other, allowing for maximum flexibility in system design. 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 ? up to 30 watts output power ? three fully isolated outputs ? wide input voltage range: 15 to 50 volts per mil-std-704 with 80 volt transient for 1 sec ? internal filter meets mil-std-461c and mil- std-461d conducted emissions requirements ? no use of optoisolators ? undervoltage lockout ? indefinite short circuit protection ? current limit protection ? low output noise ? custom versions available ? low profile (0.380 inches) package ? military environmental screening available figure 1 ? dvst2800t dc-dc converter ( not to scale )
dvst2800t series ds90054e 2 specifications (t case = -55c to +100c, v in = +28v 5%, full load, unless otherwise specified) absolute maximum ratings input voltage (continuous) 50 v dc operating case temperature -55c to +100c input voltage (transient, 1 second) 80 vo lts storage temperature -55c to +125c output power 1 30 watts lead solder temperature (10 seconds) 270c power dissipation (full load, t case = +100c) 15 watts weight (maximum) 100 grams input dvst2800t parameter conditions min typ max units static continuous 15 28 50 v input voltage transient, 1 sec 80 v inhibited 1.6 5.0 ma current no load 65 100 ma inhibit pin input 0 1.5 v inhibit pin open circuit voltage 11.0 14.0 v uvlo turn on 14.9 v uvlo turn off 11.8 v switching frequency 225 325 khz isolation input / output / case 500 v dc 100 m ? main output dvst283r3xxyyt dvst285xxyyt parameter conditions min typ max min typ max units static v out t case = 25c 3.26 3.30 3.34 4.95 5.00 5.05 v output voltage v out t case = -55c to +100c 3.23 3.30 3.37 4.90 5.00 5.10 v power 2 0 15 0 20 w current 2 v out 0 4.5 0 4.0 a ripple voltage v out full load, 20hz to 10mhz 20 50 20 50 mv p-p line regulation v out v in = 15v to 50v 5 20 5 20 mv load regulation v out no load to full load 10 30 10 30 mv efficiency 73 76 % capacitive load 1000 1000 f dynamic load step output transient v out 200 400 200 400 mv pk load step recovery 3 half load to full load 200 400 200 400 sec line step output transient v out 400 600 400 600 mv pk line step recovery 3 v in = 15v to 50v 400 600 400 600 sec turn on delay v out 15 20 15 20 msec turn on overshoot v in = 0v to 28v 0 30 0 50 mv pk
dvst2800t series ds90054e 3 specifications (t case = -55c to +100c, v in = +28v 5%, full load, unless otherwise specified) absolute maximum ratings input voltage (continuous) 50 v dc operating case temperature -55c to +100c input voltage (transient, 1 second) 80 vo lts storage temperature -55c to +125c output power 1 30 watts lead solder temperature (10 seconds) 270c power dissipation (full load, t case = +100c) 15 watts weight (maximum) 100 grams main output dvst281r8xxyyt dvst286r25xxyyt parameter conditions min typ max min typ max units static v out t case = 25c 1.78 1.80 1.82 6.19 6.25 6.31 v output voltage v out t case = -55c to +100c 1.76 1.80 1.84 6.12 6.25 6.38 v power 2 0 13.5 0 20 w current 2 v out 0 7.5 0 3.2 a ripple voltage v out full load, 20hz to 10mhz 20 75 20 50 mv p-p line regulation v out v in = 15v to 50v 5 20 5 20 mv load regulation v out no load to full load 10 30 10 30 mv efficiency 66 76 % capacitive load 1000 1000 f dynamic load step output transient v out 200 400 200 400 mv pk load step recovery 3 half load to full load 500 750 200 400 sec line step output transient v out 400 600 400 600 mv pk line step recovery 3 v in = 15v to 50v 400 750 400 600 sec turn on delay v out 15 20 15 20 msec turn on overshoot v in = 0v to 28v 0 20 0 50 mv pk
dvst2800t series ds90054e 4 specifications (t case = -55c to +100c, v in = +28v 5%, full load, unless otherwise specified) absolute maximum ratings input voltage (continuous) 50 v dc operating case temperature -55c to +100c input voltage (transient, 1 second) 80 vo lts storage temperature -55c to +125c output power 1 30 watts lead solder temperature (10 seconds) 270c power dissipation (full load, t case = +100c) 15 watts weight (maximum) 100 grams main output dvst2812xxyyt parameter conditions min typ max units static v out t case = 25c 11.88 12.00 12.12 v output voltage v out t case = -55c to +100c 11.76 12.00 12.24 v power 2 20 w current 2 v out 1.67 a ripple voltage v out full load, 20hz to 10mhz 50 mv p-p line regulation v out v in = 15v to 50v 50 mv load regulation v out no load to full load 50 mv efficiency 76 % capacitive load 500 f dynamic load step output transient v out 200 400 mv pk load step recovery 3 half load to full load 200 400 sec line step output transient v out 400 600 mv pk line step recovery 3 v in = 15v to 50v 200 600 sec turn on delay v out 15 20 msec turn on overshoot v in = 0v to 28v 0 50 mv pk
dvst2800t series ds90054e 5 specifications (t case = -55c to +100c, v in = +28v 5%, full load, unless otherwise specified) absolute maximum ratings input voltage (continuous) 50 v dc operating case temperature -55c to +100c input voltage (transient, 1 second) 80 vo lts storage temperature -55c to +125c output power 1 30 watts lead solder temperature (10 seconds) 270c power dissipation (full load, t case = +100c) 15 watts weight (maximum) 100 grams auxiliary output dvst28x12yyt dvst28x15yyt parameter conditions min typ max min typ max units static v out t case = 25c 11.76 12.00 12.24 14.70 15.00 15.30 v output voltage v out t case = -55c to +100c 11.64 12.00 12.36 14.55 15.00 15.45 v power 2 0 5 0 5 w current 2 v out 0 0.42 0 0.33 a ripple voltage v out full load, 20hz to 10mhz 25 50 25 50 mv p-p line regulation v out v in = 15v to 50v 5 20 5 20 mv load regulation v out no load to full load 10 50 10 50 mv capacitive load 500 500 f dynamic load step output transient v out 200 400 200 400 mv pk load step recovery 3 half load to full load 100 200 100 200 sec line step output transient v out 100 400 100 400 mv pk line step recovery 3 v in = 15v to 50v 100 200 100 200 sec turn on delay v out 2 20 2 20 msec turn on overshoot v in = 0v to 28v 100 250 100 250 mv pk
dvst2800t series ds90054e 6 specifications (t case = -55c to +100c, v in = +28v 5%, full load, unless otherwise specified) absolute maximum ratings input voltage (continuous) 50 v dc operating case temperature -55c to +100c input voltage (transient, 1 second) 80 vo lts storage temperature -55c to +125c output power 1 30 watts lead solder temperature (10 seconds) 270c power dissipation (full load, t case = +100c) 15 watts weight (maximum) 100 grams auxiliary output dvst28x3r3yyt dvst28x5yyt parameter conditions min typ max min typ max units static v out t case = 25c 3.23 3.30 3.37 4.90 5.00 5.10 v output voltage v out t case = -55c to +100c 3.20 3.30 3.40 4.85 5.00 5.15 v power 2 4 5 w current 2 v out 1.2 1.0 a ripple voltage v out full load, 20hz to 10mhz 25 50 25 50 mv p-p line regulation v out v in = 15v to 50v 5 20 5 20 mv load regulation v out no load to full load 10 30 10 30 mv capacitive load 1000 1000 f dynamic load step output transient v out 100 200 100 200 mv pk load step recovery 3 half load to full load 100 200 100 200 sec line step output transient v out 100 200 100 200 mv pk line step recovery 3 v in = 15v to 50v 100 200 100 200 sec turn on delay v out 2 20 2 20 msec turn on overshoot v in = 0v to 28v 0 50 0 50 mv pk notes: 1. dependant on output voltage. 2. derate linearly from full rating at 100c to 0 at 110c. 3. time for output voltage to settle to within 1% of its nominal value. connection diagram 3 in com 4 inh 1 28v in 5 +main out 6 main ret load + - 28 vdc 2 dvst2800t case 7 +aux1 out 8 aux1 ret load 9 +aux2 out 10 aux2 ret load figure 2
dvst2800t series ds90054e 7 block diagram under voltage shutdown primary housekeeping supply pwm control voltage and current amplifiers secondary h ousekeepin g supply pin 1 28v in pin 3 in com +v out pin 5 pin 6 out com inh pin 4 feedback magnetic pwm control +v out pin 7 pin 8 out com +v out pin 9 pin 10 out com linear regulator linear regulator pin 2 case figure 3 inhibit drive connection diagrams 3 in com 4 inh 1 28v in optional capacitor bias 11v 20k 3 in com 4 inh 1 28v in optional capacitor bias 11v 20k 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)
dvst2800t series ds90054e 8 efficiency performance curves (t case = 25c, full load, unless otherwise specified) v in = 15v v in = 28v v in = 50v figure 6 ? dvst2851212t figure 7 ? dvst2851515t efficiency (%) vs. output power (w) efficiency (%) vs. output power (w) figure 8 ? dvst283r31212t figure 9 ? dvst283r31515t efficiency (%) vs. output power (w) efficiency (%) vs. output power (w)
dvst2800t series ds90054e 9 emi performance curves (t case = +25c, v in = +28v 5%, full load, unless otherwise specified) figure 10 ? mil-std-461c ce03 conducted emissions figure 11 ? mil-std-461d ce102 conducted emissions environmental qualification description mil-std-883 mil-std-202 test condition temperature cycling 1010 102a -55c to +100c, 100 cycles constant acceleration 2001 212a 500g, 1min. mechanical shock 2002 cond. a 213b cond. d 500g, 1ms random vibration 2026 cond. d 214a cond. d 11.6g rms, operating moisture resistance 1004 106f 10 days barometric pressure 1001 cond. d 105c cond. c 70,000 ft, operating salt atmosphere 1009 cond. b 101d cond. b 48 hrs. resistance to solvents 2015 215j solderability 2003 208h
dvst2800t series ds90054e 10 package specifications pin function 1 28v in 2 case 3 in com 4 inhibit 5 +main out 6 main ret 7 +aux1 out 8 aux1 ret 9 +aux2 out 10 aux2 ret note: additional mounting options are available. consult the factory for details. figure 12 ? package and pinout (dimensional limits are 0.005? unless otherwise stated)
dvst2800t series ds90054e 11 package pin description pin function description 1 28v in positive input voltage connection 2 case case connection 3 in com input common connection 4 inhibit logic low = disabled output. connecting the inhibit pin to input common (pin 7) causes converter shutdown. logic high = enabled output. unconnected or open collector ttl. 5 +main out main positive output voltage connection 6 main ret main output return connection 7 +aux1 out auxiliary positive output voltage connection 8 aux1 ret auxiliary output return connection 9 +aux2 out auxiliary positive output voltage connection 10 aux2 ret auxiliary output return connection environmental screening screening condition standard (no suffix) military /ml pre-cap inspection ipc-a-610 class ii ? ? temperature cycling -55c, 100c, 10 cycles ? burn-in 96 hours at +100c 12 hours at +100c ? ? final electrical 100% at -55c, 25c, 100c 1 100% at 25c ? ? final inspection mil-std-883, test method 2009 ? ?
dvst2800t series ds90054e 12 ordering information dvst 28 5 15 15 t /ml - xxx 1 2 3 4 5 6 7 8 9 (1) (2) (3) (4) (5) product series nominal input voltage main output auxiliary output 1 auxiliary output 2 dvst 28 28 volts 1r8 3r3 5 6r25 12 1.8 volts 3.3 volts 5 volts 6.25 volts 12 volts 3r3 5 12 15 3.3 volts 5 volts 12 volts 15 volts 5 12 15 5 volts 12 volts 15 volts (6) (7) (8) (9) number of outputs package option screening code 1 additional screening code t triple none standard none /ml standard military contact sales notes: 1. vpt inc. reserves the right to ship higher screened 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, or packaging requirements.
dvst2800t series ds90054e 13 contact information to request a quotation or place orders please contac t 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 errors or omissions. the products or specifications contained herein are subject to change without notice.

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