Space-level rated 10 W DC-DC converters
16 July 2003
Power Electronics / Power Management
International Rectifier has introduced a line of 10 W, radiation-hardened, 'off-the-shelf' DC-DC converters. The devices are available either unscreened or screened to Class K per MIL-PRF-38534, simplifying qualification processes and enabling faster project completion compared to custom-designed converters.
Small and light, the S-series converters are an ideal choice for low power circuits such as analog and digital control power systems, as well as signal amplifiers and sensors in geo-synchronous (GEO) and low earth orbit (LEO) satellite applications.
They feature 28 V d.c. input, with single or dual output configurations, and operate up to 81% efficiency. The S Series converter line includes various functional and protection features such as under-voltage lockout, output over-voltage limiter, on/off inhibit, short-circuit and overload protection. Other features include magnetically coupled feedback, with radiation hardness of 100 krads total ionising dose (TID). The converters address the requirements of neutron fluence and prompt dose requirements that may be the key design considerations in many applications, says the manufacturer.
Other features: 18 to 40 V d.c. input range; single and dual output: 3,3, 5, 12, 15, ±5, ±12 and ±15 V; -55 to +125°C operating temperature.
For more information contact Avnet Kopp, 011 809 6100, sales@avnet.co.za, www.avnet.co.za
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