Power Electronics / Power Management


'Off-the-shelf' radiation-hardened DC-DC converters

6 November 2002 Power Electronics / Power Management

International Rectifier, offers the M3G family of 'off-the-shelf' radiation-hardened, high-reliability (hi-rel) DC-DC converters. The M3G converters are complete single-ended forward buck converter 'building blocks' for 28, 50 and 70 V-input power buses, in single-, dual- or triple-output configurations. Each module is assembled, tested and documented to reduce or eliminate cycle time needed for analysis and documentation of 'in-house' circuit designs.

The small size, low mass and ruggedness makes the M3G converters ideal for geo-stationary and deep space satellites, and communication systems. The M3G family is hardened to withstand total ionising dose (TID) of 200 Krads, with single event effect (SEE) rating of greater than 82 MeV-cm2/mg. The converters simplify integration since EMI filtering as well as frequency and phase synchronisation, are built-in. In addition, the devices are made with hybrid technology, enabling a compact footprint of approximately 43,75 cm3 at less than 80 g in flight-qualified power systems.

All components are stress de-rated to meet the requirements of MIL-STD-975, MIL-HDBK-1547 and GSFC PPL-21.

For more information contact Advanced Product Technology, 011 792 6010 or Avnet Kopp, 011 809 6100.



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