Simplifying satellite power design
11 March 2008
Triple output DC/DC power converter is launched by International Rectifier.
Power management technology company, International Rectifier, has introduced a triple output DC/DC power converter design platform for space applications powering specific RF communication satellite applications.
The Mx series offers low noise power performance in an open board assembly construction. The converters can be configured to meet a range of spacecraft power bus voltages, varying output load requirements, and telemetry needs, and are optimised to ensure maximum performance for sensitive RF equipment onboard spacecraft, such as receivers, transmitters, beacons, low noise amplifiers (LNAs), and up/down converters.
Two power levels are offered with the Mx series. The MA platform is rated at 5W and the MB platform is rated at 15W-output power. The platform has three outputs, and each output can be configured from 3.3V to 15V and independently regulated to eliminate cross talk and minimise noise. Output noise is less than 1mVRMS and conducted susceptibility rejection is better than 95dB. In addition to very low input/output noise characteristics, the design platform offers guaranteed output voltage accuracy and end-of-life output voltage variations of less than two per cent. The Mx series can accommodate common satellite power buses from 20V to 100V. An input filter is included to meet stringent EMI requirements. Isolated telemetry/tele-command interface and output turn on/turn off sequencing (normally required by RF amplifiers) capability are also offered.
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