www.irf.com 1 description 12watts output power available in 3.3, 5, 7.5, 12 and 15volt 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 synchronizable from an external source electrical performance similar to ahf28xxs series standard microcircuit drawings available features amf 28v input, single output the amf28xxs 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 art, arh and g-series converters. 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 amf28xxs series. the amf28xxs has been designed for high density using 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 dla qualified processes. for available screening options, refer to device screening table in the data sheet. applicable generic lot qualification test data including r adiation performance can be made available on request. consult ir san jose for special requirements. amf28xxs series the physical configuration of the amf28xxs series permits mounting directly to a heat dissipation 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. international rectifier?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-94689d
2 www.irf.com amf28xxs series (28v input, single 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. 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 parameter group a subgroups test conditions min nom max unit input voltage 16 28 40 v output voltage amf2803r3s amf2805s amf2807r5s amf2812s amf2815s amf2803r3s amf2805s amf2807r5s amf2812s amf2815s 1 1 1 1 1 2, 3 2, 3 2, 3 2, 3 2, 3 vin = 28 volts, 0% load 3.25 4.95 6.97 11.88 14.85 3.20 4.90 7.35 11.76 14.70 3.30 5.00 7.50 12.00 15.00 3.35 5.05 7.58 12.12 15.15 3.40 5.10 7.65 12.24 15.30 v output current 1 amf2803r3s amf2805s amf2807r5s amf2812s amf2815s 1, 2, 3 1, 2, 3 1, 2, 3 1, 2, 3 1, 2, 3 vin = 16, 28, 40 volts 0 0 0 0 0 3000 2400 1600 1000 800 ma output power 1 amf2803r3s all others 1, 2, 3 1, 2, 3 vin = 16, 28, and 40 vdc 10 12 w output ripple voltage 2 1, 2, 3 vin = 16, 28, 40 volts, bw = 20 hz to 2 mhz 25 60 mv pp output voltage regulation line amf2803r3s amf2805s amf2807r5s amf2812s amf2815s load all 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 = 0%, 50%, and 100% max 10 10 10 10 10 10 25 25 50 50 50 50 mv
www.irf.com 3 amf28xxs series (28v input, single output) 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 5 parameter group a subgroups test conditions min nom max unit input current no load inhibit 1, 2, 3 1, 2, 3 vin = 28v, iout = 0, inhibit (pin 1) = open (amf2812s and amf2815s) (all other models) inhibit (pin 1) shorted to input return (pin 7) (all models) 30 20 8.0 50 30 12 ma input ripple current 1, 2, 3 vin = 16, 28, 40 volts, 100% load, bw = 20 hz to 2 mhz 20 50 ma pp efficiency amf2803r3s amf2805s amf2807r5s amf2812s amf2815s amf2803r3s amf2805s amf2807r5s amf2812s amf2815s 1 1, 3 1, 3 1, 3 1, 3 2, 3 2 2 2 2 100% load 71 76 77 78 78 70 72 73 75 75 % isolation 1 input to output or any pin to case (except pin 6) at 500vdc 100 m ? capacitive load 3, 4 amf2803r3s amf2805s amf2807r5s amf2812s amf2815s 4 4 4 4 4 no effect on dc performance 500 500 300 200 200 f short circuit power dissipation 1, 2, 3 amf2803r3s all other models 7.0 6.0 w short circuit recovery 4 4, 5, 6 0% load to 100% load 20 ms switching frequency 4, 5, 6 100% load 500 550 600 khz mtbf mil-hdbk-217f sf @ tc = 35oc 750 khr weight 36 g
4 www.irf.com amf28xxs series (28v input, single output) dynamic characteristics -55c t case +125c, v in = 28 v 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 synchronization input frequency range pulse amplitude, hi 4 pulse amplitude, lo 4 pulse rise time 4 pulse duty cycle 4 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 5 all amf2803r3s amf2805s amf2807r5s amf2812s amf2815s 4, 5, 6 4, 5, 6 4, 5, 6 4, 5, 6 4, 5, 6 4, 5, 6 load step 50% 100% load step 0% 50% -300 -400 -500 -750 -750 -750 +300 +400 +500 +750 +750 +750 mv pk recovery time, step transient load changes 5, 6 amf2803r3s amf2805s amf2807r5s amf2812s amf2815s all 4, 5, 6 4, 5, 6 4, 5, 6 4, 5, 6 4, 5, 6 4, 5, 6 load step 50% 100% load step 0% 50% 70 70 100 100 100 2.0 s ms output response transient step line changes 4, 7 amf2803r3s amf2805s amf2807r5s amf2812s amf2815s 4, 5, 6 4, 5, 6 4, 5, 6 4, 5, 6 4, 5, 6 input step 16 ? 40vdc 100% load -500 -500 -1200 -1500 -1500 +500 +500 +1200 +1500 +1500 mv pk recovery time transient step line changes 4, 7 4, 5, 6 input step 16 ? 40vdc, 100% load 800 s turn on overshoot 8 amf2803r3s amf2805s amf2807r5s amf2812s amf2815s 4, 5, 6 4, 5, 6 4, 5, 6 4, 5, 6 4, 5, 6 0% load to 100% load 400 600 600 600 750 mv pk turn on delay 8 4, 5, 6 0% load to 100% load 20 ms
www.irf.com 5 amf28xxs series (28v input, single output) block diagram application information inhibit function (enable) emi filter device synchronization notes to specifications connecting the enable input (pin 1) to input common (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. the open circuit voltage of the enable input is 10 +1.0 vdc. 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 10 khz), it is difficult to filter out and may interfere with proper operation of sensitive systems (communication, radar or telemetry). interenational 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. 1 parameter guaranteed by line and load regulation tests. 2 bandwidth guaranteed by design. tested for 20hz to 2.0mhz. 3 capacitive load may be any value from 0 to the maximum limit without compromising dc performance. a capacitive load in exce ss 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. 4 parameter shall be tested as part of design characterization and after design or process changes. therefore this parameters shall be guaranteed to the limit specified. 5 load step transition time between 2.0 and 10 microseconds. 6 recovery time is measured from the initiation of the transient to where v out has returned to within 1 % of v out at 50 percent load. 7 input step transition time between 1.0 and 10 microseconds. parameter guaranteed by design but not 100% tested. 8 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. 3 4 +output output return pulse width modulator primary housekeeping supply emi filter under-voltage detector 8 1 2 7 +input enable sync input input return error amp & ref fb cs drive 6 case
6 www.irf.com amf28xxs series (28v input, single output) mechanical outline pin designation radiation specification parameter condition min typ max unit total ionizing dose mil-std-883, method 1019.4 operating bias applied during exposure 25 ? ? 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 1 enable 2 sync. input 3 + output 4 output return 5nc 6 case ground 7 input return 8 + input standard microcircuit drawing equivalance table standard microcircuit ir standard drawing number part number 5962-04252 amf2805s 5962-04253 amf2812s 5962-04254 amf2815s 5962-10223 amf2803r3s 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 amf28xxs series (28v input, single output) part numbering amf 28 05 s /em model input voltage 28 = 28v output s = single d = dual output voltage screening level 03r3 = 3.3v, 05 = 5v 07r5 = 7.5v, 12 = 12v 15 = 15v (please refer to screening table) no suffix, ch, em 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. 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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