www.irf.com 1 description 30 watts output power available in 3.3, 5, 12 and 15 volt outputs 18 - 40 vdc input range (28 vdc nominal) total ionizing dose > 25krads (si) see hardened to let up to 60 mev . cm 2 /mg -55c to +125c operating range indefinite short circuit protection external synchronization shutdown from external signal flexible mounting fully isolated - input to output and to case complimentary emi filter available electrical performance similar to atr28xxs series standard microcircuit drawings available features the amr28xxs series of dc-dc converter moduleshas been specifically designed for operation in moderate radiation environments supplementing the higher radiation performance available in the international rectifier art2815t converter series. environments presented to space vehicles operating in low earth orbits, launch boosters, orbiting space stations and similar applications requiring a low power, high performance converter with moderate radiation hardness performance will be optimally served by the amr28xxs series. the amr28xxs has been designed for high densityusing chip and wire hybrid technology that complies with the class h requirements of mil-prf-38534. manufactured in a facility fully qualified to mil-prf- 38534, these converters are fabricated utilizing dscc qualified processes. for available screening options, refer to device screening table in the data sheet.applicable generic lot qualification test data including radiationperformance can be made available on request. consult ir san jose for special requirements. amr28xxs series 28v input, single output the physical configuration of the amr28xxs seriespermits mounting directly to a heat conduction surface without the necessity of signal leads penetrating the heat sink surface. this package configuration permits greater independence in mounting and more secure mechanical attachment than traditional radially leaded packages.
s rugged ceramic seal pins are used exclusively in the package therebyassuring long term hermeticity. amr hybrid - high reliabilityradiation tolerant dc-dc converter . pd-94691c downloaded from: http:///
2 www.irf.com amr28xxs series specifications for notes to specifications, refer to page 4 static characteristics -55c t case +125c, v in =28 v dc 5%, c l =0, unless otherwise specified. input voltage range -0.5v to +50vdc (continuous), input voltage range +16v t o +40vdc 80v (100ms) output power less than or equal to 30w soldering temperature 300c for 10 seconds operating case temperature -55c to + 125c storage case temperature -65c to +135c recommended operating conditions absolute maximum ratings parameter group a subgroups test conditions min nom max unit input voltage 16 28 40 v output voltage amr2803r3s amr2805s amr2812s amr2815s amr2803r3s amr2805s amr2812s amr2815s 1 1 1 1 2, 3 2, 3 2, 3 2, 3 iout=0 3.25 4.95 11.88 14.85 3.20 4.90 11.70 14.60 3.30 5.00 12.00 15.00 3.35 5.05 12.12 15.15 3.40 5.10 12.30 15.40 v output current 1 amr2803r3s amr2805s amr2812s amr2815s 1, 2, 3 1, 2, 3 1, 2, 3 1, 2, 3 vin = 18, 28, 40 volts 7500 6000 2500 2000 ma output power amr2803r3s all others 1, 2, 3 1, 2, 3 100% load 25 30 w output ripple voltage 2 amr2803r3s amr2805s amr2812s amr2815s 1, 2, 3 1, 2, 3 1, 2, 3 1, 2, 3 vin = 18, 28, 40 volts bw = 20 hz to 2 mhz 60 60 60 75 mv pp output voltage regulation 3 line amr2803r3s amr2805s amr2812s amr2815s load amr2803r3s amr2805s amr2812s amr2815s 1, 2, 3 1, 2, 3 1, 2, 3 1, 2, 3 1, 2, 3 1, 2, 3 1, 2, 3 1, 2, 3 v in = 18, 28, 40 volts iout = 0, 50%, and 100% load 10 10 30 40 10 10 50 50 30 30 60 75 50 50 120 150 mv downloaded from: http:///
www.irf.com 3 amr28xxs series static characteristics (continued) -55c t case +125c, v in =28 v dc 5%, c l =0, unless otherwise specified. for notes to specifications, refer to page 4 parameter group a subgroups test conditions min nom max unit input current no load amr2803r3s amr2805s amr2812s amr2815s inhibited all 1, 2, 3 1, 2, 3 1, 2, 3 1, 2, 3 1, 2, 3 iout=0, inhibit =open inhibit shorted to input return 20 20 20 20 8.0 50 50 75 100 18 ma input ripple current 2 1, 2, 3 vin = 16, 28, 40 volts, 100% load, bw = 20 hz to 2 mhz 50 ma pp efficiency amr2803r3s amr2805s amr2812s amr2815s amr2803r3s amr2805s amr2812s amr2815s 1 1 1 1 2, 3 2, 3 2, 3 2, 3 100% load 74 76 80 79 70 72 75 75 % isolation 1 input to output or any pin to case (except case ground pin) at 500vdc 100 m ? capacitive load 4, 5 4 no effect on dc performance 500 f short circuit power dissipation 1, 2, 3 19 w switching frequency 4, 5, 6 100% load 500 550 600 khz sync frequency range 4, 5, 6 100% load 500 700 khz mtbf mil-hdbk-217f, n2 sf @ tc = 35c 940 khrs weight 68 g downloaded from: http:///
4 www.irf.com amr28xxs series dynamic characteristics -55c t case +125c, v in =28 v dc 5%, c l =0, unless otherwise specified. parameter group a subgroups test conditions min nom max unit output response to step transient load changes 7 amr2803r3s amr2805s amr2812s amr2815s amr2803r3s amr2805s amr2812s amr2815s 4, 5, 6 4, 5, 6 4, 5, 6 4, 5, 6 4, 5, 6 4, 5, 6 load step 50% 100% load step 8% 50% -500 -500 -800 -1000 -500 -500 -1000 -1000 +500 +500 +800 +1000 +500 +500 +1000 +1000 mv pk recovery time, step transient load changes 7, 8 4, 5, 6 load step 50% 100% or load step 8% 50% 200 s output response transient step line changes 5, 9 amr2803r3s amr2805s amr2812s amr2815s 4, 5, 6 4, 5, 6 4, 5, 6 4, 5, 6 input step from/to 18 to 40vdc, 100% load -500 -500 -1200 -1500 +500 +500 +1200 +1500 mv pk recovery time transient step line changes 5, 8, 9 4, 5, 6 input step from/to 18 to 40vdc, 100% load 10 ms turn on overshoot amr2803r3s amr2805s amr2812s amr2815s 4, 5, 6 4, 5, 6 4, 5, 6 4, 5, 6 0% load to 100% load 500 500 800 1000 mv pk turn on delay 10 4, 5, 6 0% load to 100% load 25 ms short circuit recovery 5, 10 4, 5, 6 25 ms 1 parameter guaranteed by line and load regulation tests.2 bandwidth guaranteed by design. tested for 20 khz to 2.0mhz. 3 output voltage measured at load with remote sense leads connected across load. 4 capacitive load may be any value from 0 to the maximum limit without compromising dc performance. a capacitive load in excess of the maximum limit will not disturb loop stability but may interfere with the operation of the load fault detection circuit ry, appearing as a short circuit during turn on.5 parameter shall be tested as part of design characterization and after design or process changes. parameters shall be guara nteed to the limit specified in electrical specifications.6 load step transition time between 2.0 s and 10 s. 7 recovery time is measured from the initiation of the transient to where v out has returned to within 1 % of v out at 50 % load. 8 input step transition time between 2.0 and 10 microseconds.9 turn on delay time measurement is for either a step application of power at the input or the removal of a ground signal fro m the inhibit pin while power is applied to the input. notes to specifications downloaded from: http:///
www.irf.com 5 amr28xxs series block diagram application information inhibit function (enable)emi filter device synchronization connecting the inhibit input to input common willcause the converter to shut down. it is recommended that the inhibit pin be driven by an open collector device capable of sinking at least 400 a of current. the open circuit voltage of the inhibit input is 10 +1.0 v dc . an optional emi filter is available (afh461) that willreduce the input ripple current to levels below the limits imposed by mil-std-461 ce03. when multiple dc/dc converters are utilized in asingle system, significant low frequency noise may be generated due to a small difference in the switching frequency of the converters (beat frequency noise). because of the low frequency nature of this noise (typically less than 10 khz), it is difficult to filter out and may interfere with proper operation of sensitive systems (communication, radar or telemetry). international rectifier provides synchronization of multiple amr type converters to match switching frequency of the converter to the frequency of the system clock, thus eliminating this type of noise. mtbf vs case temperature for amr2803r3s 0.00e+00 2.00e+05 4.00e+05 6.00e+05 8.00e+05 1.00e+06 1.20e+06 1.40e+06 1.60 e +06 0 20 40 60 80 100 120 case temperature, deg c mtbf 8 7 +output output return pulse width modulator primary housekeeping supply emi filter under-voltage detector 1 3 10 2 +input enable sync input input return error amp & ref 9 6 +sense -sense fb cs drive downloaded from: http:///
6 www.irf.com amr28xxs series pin designation radiation specification parameter conditions min typ max unit total ionizing dose mil-std-883, method 1019.4 operating bias applied during exposure 30 krads (si) heavy ion (single event effects) bnl dual van de graf generator 60 mev ? cm 2 /mg pin # designation 1 + input 2 input return 3 enable 4 blank 5 case ground 6 sense return 7 output return 8 + output 9 + sense 10 sync input international rectifier currently does not have a dscc certified radiation hardness assurance program. mechanical outline 2.14 0.405 max 0.220 0.050 123 5 0.800 1.200 1.600 0.400 61 0 9 8 7 0.040 d x 0.26 l pins r 0.15 typ ? 0.125 3 places 2.440 1.230 1.53 0.420 2.74 ref 0.150 typ tolerance unless otherwise specified: x.xx 0.010 x.xxx 0.005 downloaded from: http:///
www.irf.com 7 amr28xxs series part numbering standard microcircuit ir standard drawing number part number 5962-04245 amr2803r3s 5962-04246 amr2805s standard microcircuit drawing equivalence table amr 28 05 s /em model 28 = 28v output s = single d = dual t = triple output voltage 03r3 = 3.3v, 05 = 5v, 12 = 12v, 15 = 15v screening level (please refer to screening table) no suffix, ch, em input voltage device screening requirement mil-std-883 method no suffix ch em temperature range -55c to +125c -55c to +125c -55c to +85c element evaluation mil-prf-38534 class h class h n/a non-destructive bond pull 2023 n/a n/a n/a internal visual 2017 yes yes temperature cycle 1010 cond c cond c cond c constant acceleration 2001, y1 axis 3000 gs 3000 gs 3000 gs pind 2020 cond a cond a n/a 320 hrs @ 125c 320 hrs @ 125c 48 hrs @ 125c ( 2 x 160hrs ) ( 2 x 160hrs ) final electrical mil-prf-38534 -55c, +25c, -55c, +25c, -55 c, +25c, ( group a ) & specification +125c +125c +85c pda mil-prf-38534 2% 2% n/a seal, fine and gross 1014 cond a, c cond a, c cond a radiographic 2012 yes yes n/a external visual 2009 yes yes burn-in 1015 notes: best commercial practice. device with /ch suffix is a dscc class h compliant without radiation performance. no suffix is a radiation rated device but not available as a dscc qualified smd per mil-prf-38534.international rectifier currently does not have a dscc certified radiation hardness assurance program. world headquarters: 233 kansas st., el segundo, california 90245, tel: (310) 252-7105 ir san jose: 2520junction avenue, san jose, california 95134, tel: (408) 434-5000 visit us at www.irf.com for sales contact information . data and specifications subject to change without notice. 01/2011 downloaded from: http:///
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