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IR dc/dc converters eye space satellite apps

Posted: 12 Jan 2004 ?? ?Print Version ?Bookmark and Share

Keywords:international rectifier? ir? z series? dc/dc converter?

International Rectifier (IR) has introduced the Z series family of 1.5-, 2.5- and 3.3V, single output dc/dc converters for geo-synchronous (GEO) and low earth orbit (LEO) satellite power systems.

The converters feature high radiation immunity, 100krad (Si) minimum total ionizing dose (TID) and single event effect (SEE) with LET (linear energy transfer) of >80MeV-mg-cm?. It employs synchronous output rectification and includes the Z2801R5S, a 1.5V, 20A/30W device that delivers 79 percent efficiency.

The Z2801R5S (1.5V), Z2802R5S (2.5V) and Z2803R3S (3V) have output currents of 20A, 20A and 15A, output power of 30W, 50W and 50W, and efficiency of 79 percent, 83 percent and 85 percent, respectively.

The devices are available unscreened and screened to Class K per MIL-PRF-38534 with prices beginning at $3,500 each for engineering models.





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