1 mil-prf-38534 and 38535 certified facility 10w rad hard dc to dc converter 7010rh series block diagram 1 +vin 2 vin return 3 case 4 latch enable/reset 5 shutdown 6 +vout 7 vout return features: ? radiation tested to tbd krads (method 1019 condition a) ? aerospace tor ready design ? nasa s-311-p-829 compliant capacitors ? fixed frequency of 500khz ? 16v to 50v input operating range ? contact the factory for output voltage other than 3.3v ? current mode control ? cycle by cycle current limit ? user selectable over current latch of or constant current limit ? fully isolated, no opto-couplers ? peak efciency exceeding 73% ? internally compensated ? softstart and under voltage lockout ? shutdown pin for supply sequencing ? internal emi filter ? non-rad hard edu's available description: the msk7010rh is a 10w radiation hardened fully isolated dc to dc converter. the msk7010rh simplifes design of high efciency radiation hardened power supplies and requires a minimum amount of board space. high efciency minimizes input bus loading. user selectable over current fault response allows the designer to select between latching power of or constant current output in the event of an overload. the msk7010rh is hermetically sealed in a 7 pin powerpack with straight or formed leads and is specifcally designed for space/satellite applications. ? geo and leo satellite system power supply ? launch vehicle systems ? microprocessor, asic, fpga power supply ? high efciency low voltage subsystem power supply typical applications pin-out information preliminary rev. d 2/18
6 2 preliminary rev. d 2/18 notes: 1 unless otherwise specifed; vin = 28v, i out = 3.0a. shutdown = open, latch = 0v, c l = 0.1f 2 guaranteed by design but not tested. typical parameters are representative of actual device performance but are for reference only. 3 industrial grade devices shall be tested to subgroup 1 and 4 unless otherwise specifed. 4 military grade "h" and "k" sufx devices shall be 100% tested to subgroups 1,2,3,4,5 and 6. 5 subgroup 1, 4 ta = +25c 2, 5 ta = +125c 3, 6 ta = -55c 6 continuous operation at or above absolute maximum ratings may adversely efect the device performance and/or life cycle. 7 pre and post irradiation limits at 25c, to tbdkrads tid, are identical unless otherwise specifed. 8 msk7010edu does not use rad hard die, post irradiation specifcations are not applicable. electrical specifications absolute maximum ratings +vin .............................................................................60v t st storage temperature range...........-65c to +150c latch and shutdown voltage ..................................40v t ld lead temperature range i out ...........................................................................4.0a (10 seconds)...................................................300c power dissipation...................see efciency curves t j junction temperature....................................+150c esd rating............................................. class 1c t c case operating temperature range msk7010k/h rh............................-55c to +125c msk7010rh.....................................-40c to +85c msk7010edu...................................-40c to +85c parameter test conditions 1 7 8 group a subgroup msk7010-3.3h/k rh msk7010-3.3rh/edu units min. typ. max. min. typ. max. output voltage verifed by regulation tests 1, 2, 3 3.27 3.30 3.33 3.27 3.30 3.33 v output voltage regulation 16v vin 50v 0a load 3a 1, 2, 3 -1.0 0.15 1.0 -1.0 0.15 1.0 % output ripple voltage 20mhz bandwidth 1 - 30 50 - 30 50 mvpp vin current, shutdown shutdown = 0v 1, 2, 3 - 3 5 - 3 5 ma vin current iout = 0.0a 1, 2, 3 - 17 30 - 17 30 ma vin ripple current 2 5uh source, 10khz to 30mhz 4 - 15 - - 15 - mapp current limit, latch enabled latch = open 1, 2, 3 3.0 3.6 4.0 3.0 3.6 4.0 a post irradiation 1 3.0 3.5 4.0 - - - current limit, constant current latch = 0v, ? vout = -10% 1, 2, 3 3.3 3.8 4.0 3.3 3.8 4.0 a post irradiation 1 3.1 3.5 4.0 - - - efciency 1, 2, 3 65 72 - 65 72 - % shutdown pin open circuit voltage 2 1 - 12 - - 12 - v shutdown pin source current shutdown = 0v 1, 2, 3 - 1.5 3 - 1.5 3 ma undervoltage lockout thresholds iout = 0a 1, 2, 3 14 - 16 14 - 16 v undervoltage lockout hysteresis iout = 0a 1, 2, 3 0.5 1.0 - 0.5 1.0 - v phase margin 2 4 - 90 - - 90 - deg gain margin 2 4 - 15 - - 15 - db step load response iout 1.5a to 3.0a, 10a/s 1 -200 160 200 -200 160 200 mvpp step load recovery time iout 1.5a to 3.0a, 10a/s 4 - 170 200 - 170 200 us turn on overshoot toggle shutdown 4 - 0 200 - 0 200 mvpp turn on delay toggle shutdown 4 - 1.5 5 - 1.5 5 ms line rejection 2 vin < 50khz 4 - 60 - - 60 - db switchihng frequency 4, 5, 6 450 500 550 450 500 550 khz isolation input to output or any pin to case @ 500v 1 100 - - 100 - - m maximum capacitive load 2 4 - 2200 - - 2200 - f thermal resistance power silicon junction to case @ 125c - - - 10 - - 10 c/w
pin functions +vin - connect +vin to the primary power bus positive rail. input capacitors are typically not required if the input bus impedance is less than 11 below 30khz. vin return - connect vin return to the primary power bus negative rail. case - provides an electrical connection to the device package only. this pin is isolated from all internal circuitry. latch enable/reset - the latch pin determines the behavior of the converter during an over current event. open circuit this pin to allow the converter to latch of the output if an over current condition is detected. connect a capacitor between the latch enable/reset pin and vin return to delay the latch of of the output. the value of the capacitance determines the delay time between the onset of an over current event and output shutdown. see the typical performance curves section for additional information. toggle this pin to vin return to reset the latch and restart the converter. connecting the latch pin to vin return will disable the latch feature and the converter will behave as a constant current source during an over current event. shutdown - pull this pin to vin return (typically <2.8v) to put the converter in a low power shutdown state, disabling the output and most internal circuitry. open or pull this pin above 10v to enable the converter. +vout - the +vout pin is the positive output, with respect to vout return. output capacitors are not typically required, however high frequency ceramic capacitance mounted near the load are recommended to support fast load transients. additional bulk capacitance connected to this pin is acceptable. however, excessive output capacitance may negatively afect dynamic response. the output is foating and a negative load voltage can be obtained by grounding +vout and connecting the load from vout return to ground. vout return - the vout return pin is the negative output, it is the load current return pin when the msk7010 is connected as a positive power source. connect to the load negative terminal with low impedance traces to minimize load regulation error. total dose radiation test performance radiation performance curves for tid testing will be generated for all testing performed by msk. these curves show performance trends throughout the tid process and can be located in the msk7010rh radiation test report. the complete test report will be available in the rad hard products section of the msk website typical application circuit #1 active high shutdown and latch reset. 10ms latch of delay. typical application circuit #3 mil-std-461 ce & cs compliant input flter mil-std-704f power bus typical application circuit #2 split +/- power supply 3 preliminary rev. d 2/18 application notes
load step response 1.5a to 3.0a turn on response, no load 4 preliminary rev. d 2/18 typical performance curves
ordering information msk7010-3.3 rh lead form options s=straight; u=bent up; d=bent down radiation hardened rh=radiation hardened edu=non rad hard eng units; screening blank= industrial; h=mil-prf-38534 class h; k= mil-prf-38534 class k output voltage 3.3=3.3v general part number esd triangle indicates pin 1 weight=55 grams typical all dimensions are specified in inches 5 preliminary rev. d 2/18 mechanical specifications
the information contained herein is believed to be accurate at the time of printing. anaren, msk products reserves the right to make changes to its products or specifcations without notice, however and assumes no liability for the use of its products. please visit our website for the most recent revision of this datasheet. contact anaren, msk products for mil-prf-38534 class h and class k qualifcation and radiation status. msk www.anaren.com/msk rev status date description a preliminary 09/16 initial release b preliminary 06/17 update specs & performance curves c preliminary 07/17 correct current limit specs, output capacitor d preliminary 02/18 update front page bullet points, vin range and tor ready; add esd rating 6 preliminary rev. d 2/18 revision history
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