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Dual-phase DCM interleaved PFC controller IC switches at zero current

Posted: 28 Sep 2010 ?? ?Print Version ?Bookmark and Share

Keywords:active power factor correction converters? controller IC?

Allegro MicroSystems Inc. launched its new dual-phase DCM interleaved PFC controller IC for use in the telecom, server, home appliance and industrial markets.

Allegro's SSC2101S is specifically designed for active power factor correction (PFC) converters. The company says this new device offers higher efficiency and less EMI noise compared with similar devices.

Having two boost regulators which operates at 180 degrees out of phase, in Discontinuous Conduction Mode (DCM), the device permits all switching to be done at zero current. This zero current switching optimizes efficiency and decreases switching noise, as well as stress on components over a wide range of input voltage and output loadings.

 Allegro MicroSystems' SSC2101S dual-phase DCM interleaved PFC controller IC

The pin count has been minimized (8-pin package) without trading off important properties such as feedback open loop detection, overvoltage protection, overcurrent protection, and fast load response. Allegro's SSC2101S empowers users to attain high reliability power supply systems with fewer external components.

Pricing and availability: The SSC2101S is priced at $0.80 each for orders of 1,000 units.

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