40-Watt rad-hard DC-DC converters for digital and analog spacecraft power introduced by IR

EL SEGUNDO, Calif., 1 Aug. 2014. International Rectifier (IR) in El Segundo, Calif., is introducing the M3G120 series of 40-Watt radiation-hardened (rad-hard) 120-volt input DC-DC converters for a wide range of digital and analog spacecraft power systems requiring as long as 15 years or more of mission life.

The M3G120 series design included reliability and radiation performance components de-rated to NASA EEE-INST-002 and MIL-STD-1547B requirements.

Available in single- and dual-output configurations, the DC-DC converters feature standard single-output voltages of 3.3, 5, 12, 15, and 28 volts and dual-output voltages of ±5, ±12, and ±15 volts.

Key features include total ionization dose (TID) of more than 200 krad (Si), single-event effect (SEE) (heavy ions) with rated LET greater than 83 MeV-cm²/mg, integrated EMI filter, and weight of less than 110 grams in a hermetic 3.5-by-2.5-by 0.475-inch package including I/O pins and mounting tabs.

The DC-DC converters also feature 95-to-140-volt DC input, as much as 160-volt input transients, input undervoltage protection, synchronization input/output and on/off control via converter's inhibit pin, and Class K hybrid MIL-PRF-38534 qualified.

Design analysis reports which include reliability analysis, components stress analysis, thermal analysis, radiation tests, and worst case analysis are available upon request.

For more information contact International Rectifier online at www.irf.com.

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