dvmsa28 series 10023dsa 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 emi filters description the dvmsa28 series of hybrid emi filters is operable over the full military (-55 c to +125 c) temperature range with no power derating. the dvmsa28 emi filter is designed to filter conducted emissions of dvsa series dc-dc converters. these filters 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 wide input voltage range: 0 to 50 volts per mil-std-704 up to 0.8 amp maximum current 40 db minimum attenuation at 500 khz industry standard pinout high input transient voltage: 80 volts for 1 sec per mil-std-704a precision projection welded hermetic package custom versions available additional environmental screening available meets mil-std-461c and mil-std-461d emc requirements protects against conducted susceptibility specified in mil-std-461c, cs01 and cs02 mil-prf-38534 element evaluated components figure 1 ? dvmsa28 emi filter ( not to scale )
dvmsa28 series 10023dsa 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 storage temperature -65c to +150c input voltage (transient, 1 second) 80 volts lead solder temperature (10 seconds) 300c output current 0.8 amps weight 15 grams power dissipation (full load, t case = +125c) 0.18 watts dvmsa28 parameter conditions min typ max units static continuous 0 28 50 v input voltage 2 transient, 1 sec - - 80 v current 1 continuous 0 - 0.8 a output voltage continuous v out = v in ? (i in x r dc )v current continuous 0 - 0.8 a dc resistance continuous - - 280 m ? power dissipation 2 continuous - - 0.18 w noise rejection f = 500 khz 40 - - db capacitance pin to case 10 - 30 nf isolation any pin to case, 500 v dc 100 - - m ? thermal resistance case to ambient ( ca) -32-c/w mtbf (mil-hdbk-217f) aif @ t c = 55c - 3.15 - mhrs notes: 1. derate linearly to 0 at 135c. 2. verified by qualification testing. block diagram 28v in pin 1 in com pin 7 28v out pins 2, 3 out com pins 5, 6 pins 4, 8 case figure 2
dvmsa28 series 10023dsa 3 connection diagram 7 in com 5 inh 6 28v in 1 +v out 2 out com load + - 28 vdc 2, 3 28v out 5, 6 out com 1 28v in 7 in com 4, 8 dvmsa28 emi filter 8 dvsa2800s dc-dc converter case figure 3 ? dvmsa28 emi filter hookup with single converter emi performance curves (t case = 25c, v in = +28v 5%, full load, unless otherwise specified) figure 4 ? mil-std-461c figure 5 ? mil-std-461c dvsa2800d without emi filter dvsa2800d with dvmsa28 emi filter
dvmsa28 series 10023dsa 4 emi measurement methods connection diagrams 10 uf 10 uf current transformer +v in -v in +v out -v out to d.u.t. to 50 ohm input figure 6 ? mil-std-461c measurement method (feedthrough capacitor) +v in -v in +v out -v out to 50 ohm input 50 uh 50 uh figure 7 ? mil-std-461d measurement method (lisn)
dvmsa28 series 10023dsa 5 package specifications top view side view pin function 1 28v in 2 28v out 3 28v out 4 case 5out com 6out com 7 in com 8 case bottom view figure 8 ? package and pinout (dimensional limits are 0.005? unless otherwise stated)
dvmsa28 series 10023dsa 6 package pin description pin function description 1 28v in positive input voltage connection 2, 3 28v out positive output voltage connection 4, 8 case case connection 5, 6 out com output common connection 7 in com input common connection 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.
dvmsa28 series 10023dsa 7 ordering information dvmsa 28 /hb - xxx 123 4 (1) (2) (3) (4) product series nominal input voltage screening code additional screening code dvmsa 28 28 volts 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 test ing, 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 contained herein are subject to change without notice.
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