dvst2800t series 90054dsa vpt inc. 2801 commerce street blacksburg va, 24060 http://www.vpt - inc.com sales information: phone: (425) 337 - 2482 fax: (603) 297 - 1160 e - mail: mbosmann@worldnet.att.net 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 ( - 40c to +85c) temperature range with no power derating. the three low noise outputs are fully isolated from each other, allowing for maximum flexibility in system design. features up to 30 watt s 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 low output noise custom versions available low profile (0.380 inches) package military environmental screening available figure 1 ? dvst2800t dc - dc converter ( not to scal e )
dvst2800t series 90054dsa 2 specifications (t case = - 40c to +85c, v in = +28v 5%, full load, unless otherwise specified) absolute maximum ratings input voltage (continuous) 50 v dc operating case temperature - 40c to +85c input voltage (transient, 1 second) 80 volts storag e temperature - 55c to +125c output power 1 30 watts lead solder temperature (10 seconds) 270c power dissipation (full load, t case = +85c) 13 watts weight 100 grams input dvst2800t parameter conditions min typ max units static co ntinuous 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 250 350 k hz isolation input / output / case 500 v dc 100 m o thermal resistance case to ambient ( q ca) 6 c/w main output dvst283r3xxyyt dvst2805xxyyt 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 = - 40c to +85c 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 10 50 10 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 m 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 m sec line step output transient v out 4 00 600 400 600 mv pk line step recovery 3 v in = 15v to 50v 400 600 400 600 m sec turn on delay v out 15 20 15 20 msec turn on overshoot v in = 0v to 28v 0 50 0 50 mv pk
dvst2800t series 90054dsa 3 specifications (t case = - 40c to +85c, v in = +28v 5%, full load, unless otherwise specified) absolute maximum ratings input voltage (continuous) 50 v dc operating case temperature - 40c to +85c input voltage (transient, 1 second) 80 volts storage temperature - 55c to +125c output power 1 30 watts lead solder temperature (10 seconds) 270c p ower dissipation (full load, t case = +85c) 13 watts weight 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 ou t t case = - 55c to +125c 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 m 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 m sec line step output transient v out 50 400 50 400 mv pk line step recovery 3 v in = 15v to 5 0v 100 200 100 200 m 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 notes: 1. dependant on output voltage. 2. derate linearly from full rating at 85c to 0 at 100c. 3. time for output voltage to settle to within 1% of its nominal value. connection diagram figure 2
dvst2800t series 90054dsa 4 block diagram figure 3 inhibit drive connection diagrams figure 4 ? internal inhibit circuit and recommended driv e figure 5 ? isolated inhibit drive (shown with optional capacitor for turn - on delay) (shown with optional capacitor for turn - on delay)
dvst2800t series 90054dsa 5 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 90054dsa 6 emi performance curves (t case = - 40c to +85c, 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 env ironmental qualification description mil - std - 883 mil - std - 202 test condition temperature cycling 1010 102a - 40c to +100c, 100 cycles constant acceleration 2001 212a 500g, 1min. mechanical shock 2002 cond. a 213b cond. d 500g, 1ms random vibration 202 6 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 90054dsa 7 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 notes: additional mounting options are available. consult the factory for details. figure 12 ? package and pinout
dvst2800t series 90054dsa 8 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 connectio n 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 mil - std - 883 standard (no suffix) extended /mil temperature cycling method 1010, - 40c to 100c, 10 cycles burn - in 96 hours at +85c 24 hours at +85c final electrical 100% at 25c final inspection method 2009
dvst2800t series 90054dsa 9 ordering information dvs t 28 5 15 15 t /mil - 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 3r3 5 3.3 volts 5 volts 12 15 12 volts 15 volts 12 15 12 volts 1 5 volts (6) (7) (8) (9) number of outputs package option screening code additional screening code t triple none standard none /mil standard military 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, or packaging requirements. contact information to request a quotation or place an order please contact your sales representativ e or the vpt inc. sales department at: phone : (425) 337 - 2482 fax : (603) 297 - 1160 e - mail : mbosmann@worldnet.att.net 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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