53508 series solid st ate power controllers preliminary mii features: ? 270v, 10a operation ? power mosfet with low on-state resistance ? controlled soft turn-on ? i2t overload protection ? short circuit protection ? external trip profile programming (30% to 100% of rating) ? fault and output state monitor ? isolation to 1000v ? military environmental screening available applications: ? designed for 270v bus application ? aircraft power distribution ? military/high reliability systems ? satellite/space systems description the 53508 series solid-state power controllers are lightweight and resistant to damage from shock and vibration. they are designed to replace electromechanical breakers and solid-state relays. they overcome the problems associated with arcing and contamination of breakers as well as providing internal protection for overload and short circuit conditions. they provide fault and output state monitoring as well as a controlled soft turn-on. the trip profile is externally programmable from 30% to 100% of rating optical coupling between input and output stages provide effective isolation of 1000vdc. the power mosfet switches used in the output stage provide low ?on? resistance, low offset and minimal internal power dissipation. precautions: precautions must be taken to limit the transient voltages generated by the inductance in the system wiring and load when a short circuit causes the sspc to turn off. when testin g individual sspc?s, care should be taken to si mulate actual system conditions. absolute maximum ratings isolation voltage ............................................................................................................. ............................................. 1000 vdc continuous operating output voltage ............................................................................................ .................................400 vdc transient output voltage?????????????????????????....................................................550 vdc bias supply voltage ........................................................................................................... .................................... -.6 to 5.5 vdc control voltage ................................................................................................................ ..................................................32vdc operating temperature ......................................................................................................... ................... -55oc to +125oc case storage temperature ........................................................................................................... ...............................-60oc to +150oc micropac industries cannot assume any responsibility for any circuits shown or represent that they are free from patent infringement. micropac reserves the right to make changes at any time in order to improve design and to supply the best product possible. micropac industries, inc. microcircuits products division ? 905 e. walnut st., garland, tx 75040 ? (972) 272-3571 ? fax (972) 494-2281 www.micropac.com e-mail: microsales@micropac.com 11/30/06 rev a pg. 1 of 5
53508 series so lid state power controllers micropac industries cannot assume any responsibility for any circuits shown or represent that they are free from patent infringement. micropac reserves the right to make changes at any time in order to improve design and to supply the best product possible. micropac industries, inc. microcircuits products division x 905 e. walnut st., garland, tx 75040 x (972) 272-3571 x fax (972) 494-2281 www.micropac.com e-mail: microsales@micropac.com 11/30/06 rev b pg. 2 of 5 this device is available unscreened (for engineering use) or environmentally screened to h level plus pind in accordance with table c-ix of mil-prf-38534. 53508 electrical characteristics t a = -55 to 125 c parameter test conditions min typ max units input characteristics bias supply range 4.75 5.0 5.25 vdc bias current 25 35 ma input current (control) 32 vdc input 6 m a input current (control) 5 vdc input 2 a control voltage range -0.5 5 32.0 vdc turn-on voltage see notes 1 & 2 2.4 2.8 vdc turn-off voltage see notes 1 & 2 1.9 2.2 vdc dielectric strength input /output / power bus/ case 1000 vdc output characteristics output current, continuous steady state load current 110 120 % of rating output current, trip point 500% of rating 100 ms output current, trip point 600% of rating 50 100 s steady state current adjustment range: 30 100 % of rating transient voltage output device rating 550 vdc forward voltage drop 10a load current @ 25c 0.85 vdc forward voltage drop 10a load current @ 125c 1.7 vdc turn-on time @ 25oc case 270vdc, 10a 400 500 600 s turn-off time @ 25oc case 270vdc, 10a 50 100 s off-state leakage vds = 550v, tc = 25c 250 p a off-state leakage vds = 440v, tc = 125c 1000 a total device power dissipation (tpd) iload = 10a. ta = 25c 11.5 w junction temperature 150 oc thermal resistance, t jc 2.0 oc/w notes: 1. maximum input switching frequency not to exceed 1 hz under normal conditions, or into a shorted output. 2. input transitions must be ?bounceless contact? with tran sitions of <1 ms. 3. devices are electrically tested at -55 q c, +25 q c and +125 q c with no environmental screening or qualification. 4. fully compliant class h or class k devic es will require element evaluation and qci.
53508 series so lid state power controllers micropac industries cannot assume any responsibility for any circuits shown or represent that they are free from patent infringement. micropac reserves the right to make changes at any time in order to improve design and to supply the best product possible. micropac industries, inc. microcircuits products division x 905 e. walnut st., garland, tx 75040 x (972) 272-3571 x fax (972) 494-2281 www.micropac.com e-mail: microsales@micropac.com 11/30/06 rev b pg. 3 of 5 trip profile 0 100 200 300 400 500 600 700 0.01 0.1 1 10 100 time (sec) % of rating always trip never trip trip profile the trip profile is a combination of 2 separate functions; the i2t circuit protection and the short circuit protection. the i2t circui t protection continuously monitors the load current and when the load current exceeds a preset limit (110 to 120% of rating) the time-integral of the difference determines the trip time as indicated by the curved line on the chart (typical turn-off time is <1us). the short circuit protection continuously monitors the load current and when the load current exceeds a preset limit (600% of rating) it immediatel y shuts down the sspc (typical response time is < 50us, typical turn-off time is <1us). trip profile external trim the trip profile is externally programmable by co nnecting the proper resistance between pins 12 and 13 (trip set - and trip set +). the following formula dictates the profile setting: rext = ( 7 * xprog / (1 ? xprog)) ? 3 where xprog is the ratio of the desired trip po int to the device rating. (0.3 < xprog < 1) rext is in kohms. table 1 prov ides typical solutions for rext.
53508 series so lid state power controllers micropac industries cannot assume any responsibility for any circuits shown or represent that they are free from patent infringement. micropac reserves the right to make changes at any time in order to improve design and to supply the best product possible. micropac industries, inc. microcircuits products division x 905 e. walnut st., garland, tx 75040 x (972) 272-3571 x fax (972) 494-2281 www.micropac.com e-mail: microsales@micropac.com 11/30/06 rev b pg. 4 of 5 table 1 current rating nominal value (r ext ) tolerance (r ext ) 3a 0 - 5a 4k + 10% 6.7a 11.2k + 10% 8.3a 32k + 10% 10a open - turn on profile 0 50 100 150 200 250 300 0 100 200 300 400 500 600 700 800 900 1000 1100 time (us) load voltage 10% 90% the sspc applies voltage to the load at a fixe d rate of approximately 43v/100us during turn-on independent of the load current. this corresponds to a turn-on time of 500us when measured from 10% to 90% with an applied voltage of +270vdc.
53508 series so lid state power controllers micropac industries cannot assume any responsibility for any circuits shown or represent that they are free from patent infringement. micropac reserves the right to make changes at any time in order to improve design and to supply the best product possible. micropac industries, inc. microcircuits products division x 905 e. walnut st., garland, tx 75040 x (972) 272-3571 x fax (972) 494-2281 www.micropac.com e-mail: microsales@micropac.com 11/30/06 rev b pg. 5 of 5 orderable part number description 53508-102 unscreened (for engineering evaluation) 53508-108 screened to class h plus pind of mil-prf-38534, table c-ix
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