Low-loss Schottky diodes

14 April 2010 Power Electronics / Power Management

STMicroelectronics has introduced a new family of high-efficiency power rectifiers that will help product manufacturers achieve energy-efficiency approvals, such as 80 PLUS. The 80 PLUS incentive program proposes to increase power supply efficiency, which helps reduce global carbon emissions by reducing wasted energy.

The new STPS50U100C is a rectifier diode and can be used in the output of power supplies for adapters, desktop PCs, servers, TV and video products, communication equipment, and many other electrical appliances. It is the first member of a new family of ultra-low forward voltage (ULVF) Schottky rectifier diodes from ST, which will provide a range of diode properties to fulfil various applications.

The diodes handle high power density while providing a high safety margin to address a large scale of high-output power supplies. Typical forward voltage drop is 0,64 V at 25 A (0,38 V at 5 A) while maximum leakage current is 200 μA and maximum average forward current is 50 A. The parts can withstand a repetitive peak reverse voltage of 100 V, surge non-repetitive forward current of 250 A and junction temperature of 150°C.

For more information contact Robin Scholes, Avnet Kopp, +27 (0)11 809 6100, [email protected], www.avnet.co.za

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