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www.irf.com 1 description 12w output power available in 5v, 12v and 15v outputs 16 - 40vdc input range (28vdc nominal) low input/output noise total ionizing dose > 25krads (si) see hardened to let up to 60mev . cm 2 /mg -55c to +125c operating range indefinite short circuit protection flexible mounting high power density fully isolated - input to output and to case complimentary emi filter available externally synchronizable electrical performance similar to ahf28xxd series standard microcircuit drawings available features amf 28v input, dual output the amf28xxd has been designed for high density using chip and wire hybrid technology that complies with the class h requirements of mil-prf-38534.

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% applicable generic lot qualification test data including radiation performance can be made available on request. consult ir san jose for special requirements. amf28xxd series the amf28xxd series of dc-dc converter modules has 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 amf28xxd series. the physical configuration of the amf28xxd series permits 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 mechanical security than traditional packages.

?s rugged ceramic seal pins are used exclusively in the package thereby assuring long term hermeticity. hybrid - high reliability radiation tolerant dc-dc converter pd-94688d
2 www.irf.com amf28xxd series (28v input, dual output) specifications for notes to specifications, refer to page 5 static characteristics -55c t case +125c, v in =28v dc 5%, c l =0, unless otherwise specified. parameter group a subgroups test conditions min nom max unit input voltage 16 28 40 v output voltage amf2805d amf2812d amf2815d amf2805d amf2812d amf2815d 1 1 1 2, 3 2, 3 2, 3 vin = 28 volts, 10% load on both outputs 4.95 11.88 14.85 4.90 11.76 14.70 5.00 12.00 15.00 5.05 12.12 15.15 5.10 12.24 15.30 v output current 1, 2 amf2805d amf2812d amf2815d 1, 2, 3 1, 2, 3 1, 2, 3 vin = 16, 28, 40 volts each output each output each output 240 100 80 2160 900 720 ma output power 1, 2 amf2805d amf2812d amf2815d 1, 2, 3 1, 2, 3 1, 2, 3 vin = 28 volts, 100% load 12 12 12 w output ripple voltage 1, 3 amf2805d amf2812d amf2815d 1, 2, 3 1, 2, 3 1, 2, 3 vin = 16, 28, 40 volts, 100% load, bw = 20 hz to 2 mhz 25 25 25 60 60 60 mv pp output voltage regulation 3 line amf2805d amf2812d amf2815d load amf2805d amf2805d amf2805d 1, 2, 3 1, 2, 3 1, 2, 3 1, 2, 3 1, 2, 3 1, 2, 3 v in = 16, 28, 40 volts iout = 10, 50%, and 100% load 10 10 10 10 10 10 25 50 50 50 50 50 mv input voltage range -0.5v to +50vdc input voltage range +16v to +40vdc soldering temperature 300c for 10 seconds output power less than or equal to 12w storage case temperature -65c to +135c operating case temperature -55c to +125c recommended operating conditions absolute maximum ratings
www.irf.com 3 amf28xxd series (28v input, dual output) static characteristics (continued) -55c t case +125c, v in =28v dc 5%, c l =0, unless otherwise specified . for notes to specifications, refer to page 5 parameter group a subgroups test conditions min nom max unit cross regulation 5 amf2805d amf2812d amf2815d 1, 2, 3 1, 2, 3 1, 2, 3 minimum 1.0 watt on both outputs 10%-90% load 10 3.0 3.0 % input current no load amf2805d amf2812d amf2815d inhibit amf2805d amf2812d amf2815d 1, 2, 3 1, 2, 3 1, 2, 3 1, 2, 3 1, 2, 3 1, 2, 3 vin=28v, iout=0, inhibit (pin 1)=open inhibit (pin 1) shorted to input return (pin 7) 35 35 35 8.0 8.0 8.0 60 60 60 12 12 12 ma input ripple current 3 amf2805d amf2812d amf2815d 1, 2, 3 1, 2, 3 1, 2, 3 vin = 16, 28, 40 volts, 100% load, bw = 20 hz to 2 mhz 20 20 20 50 50 50 ma pp efficiency 3 amf2805d amf2812d amf2815d amf2805d amf2812d amf2815d 1, 3 1, 3 1, 3 2 2 2 100% load 76 77 78 72 74 74 % isolation 1 input to output or any pin to case (except pin 6) at 500vdc 100 m ? capacitive load 5, 6 amf2805d amf2812d amf2815d 4 no effect on dc performance, total for both outputs 500 200 200 f short circuit power dissipation 1, 2, 3 6.0 w mtbf mil-hdbk-217f, sf @ tc=35c 750 khrs weight 36 g
4 www.irf.com amf28xxd series (28v input, dual output) dynamic characteristics -55c t case +125c, v in =28v dc 5%, c l =0, unless otherwise specified. for notes to specifications, refer to page 5 parameter group a subgroups test conditions min nom max unit short circuit recovery 6 amf2805d amf2812d amf2815d 4, 5, 6 4, 5, 6 4, 5, 6 0% load to 100% load 25 25 25 ms switching frequency 3 4, 5, 6 100% load 500 550 600 khz synchronization input 3 frequency range pulse amplitude, hi 6 pulse amplitude, lo 6 pulse rise time 6 pulse duty cycle 6 4, 5, 6 500 2.5 -0.5 20 700 10 0.8 100 80 khz v v ns % output response to step transient load changes 3, 7 4, 5, 6 4, 5, 6 load step 50% 100% load step 10% 50% -200 --800 +200 +800 mv pk recovery time, step transient load changes 3, 7, 8 4, 5, 6 4, 5, 6 load step 50% 100% load step 10% 50% 70 2000 s output response transient step line changes 3, 6, 9 amf2805d amf2812d amf2815d 4, 5, 6 4, 5, 6 4, 5, 6 input step 16 to 40vdc, 100% load -450 -750 -750 +450 +750 +750 mv pk recovery time transient step line changes 3, 6, 9 4, 5, 6 input step 16 40vdc, 100% load 1200 s turn on overshoot 3, 10 all amf2805d amf2812d amf2815d 4, 5, 6 4, 5, 6 4, 5, 6 4, 5, 6 0% load 100% load 600 400 300 300 mv pk turn on delay 3, 10 4, 5, 6 0% load to 100% load 25 ms
www.irf.com 5 amf28xxd series (28v input, dual output) block diagram application information inhibit function (enable) emi filter device synchronization notes to specifications an optional emi filter is available (afh461) that will reduce the input ripple current to levels below the limits imposed by mil-std-461 ce03. when multiple dc-dc converters are utilized in a single 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 10khz), 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 amf type converters to match switching frequency of the converter to the frequency of the system clock, thus eliminating this type of noise. (pin 7) will cause the converter to shut down. it is recommended that the enable pin be driven by an open collector device capable of sinking at least 400 a of current. if the user chooses not to use the inhibit function, it may be left open and the converter will function normally. because it is internally pulled up, the open circuit voltage of the inhibit input is 10 +1.0v dc. 1. applicable to positive and negative outputs. 2. maximum combined output is 12w. 10.8w (max.) is available from either output (90%). 3. load current split equally between +v out and ?v out . 4. 1.2w load on output under test, 1.2w to 10.8w load change on other output. 5. capacitive value 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 circuitry, appearing as a short circuit during turn-on. 6. parameter shall be tested as part of design characterization and after design or process changes. thereafter, parameters shall be guaranteed to the limit specified. 7. load step transition time between 2.0 s and 10 s. 8. recovery time is measured from initiation of the transient to where v out has returned to within 1% of v out at 50% load. 9. input step transient time between 1.0 s and 10 s. 10. turn-on delay time measurement is for either a step application of power at the input or the removal of a ground signal from the inhibit pin while power is applied to the input. 3 4 +output output return pulse width modulator primary housekeeping supply emi filter 8 1 2 7 +input enable sync input input return fb cs drive 5 - output 6 case error amp & ref connecting the enable input (pin 1) to input common
6 www.irf.com amf28xxd series (28v input, dual output) mechanical outline radiation specification parameter condition 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 international rectifier currently does not have a dla certified radiation hardness assurance program. pin designation pin # designation 1 enable 2 sync input 3 + output 4 output return 5 - output 6 case ground 7 input return 8 + input standard microcircuit drawing equivalence table standard microcircuit ir standard drawing number part number 5962-05222 amf2812d 5962-05223 amf2815d 1.600 1.85 1.13 1.380 0.40 0.60 0.80 1.00 0.19 0.17 2.10 0.33

? 0.140 0.03d x 0.25l 8 pins 8 124 7 3 6 5
www.irf.com 7 amf28xxd series (28v input, dual output) part numbering 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, -55c, +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 dla class h compliant without radiation performance. no suffix is a radiation rated device but not available as a dla qualified smd per mil-prf-38534. international rectifier currently does not have a dla certified radiation hardness assurance program. amf 28 05 d /em model input voltage 28 = 28v output s = single d = dual output voltage 05 = 5v 12 = 12v 15 = 15v screening level (please refer to screening table) no suffix, ch, em world headquarters: 101 n, sepulveda blvd., el segundo, california 90245, usa tel: (310) 252-7105 ir san jose: 2520 junction avenue, san jose, california 95134, usa tel: (408) 434-5000 visit us at www.irf.com for sales contact information . data and specifications subject to change without notice. 02/2013

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