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Resonant power factor correction converter

  • US 8,693,213 B2
  • Filed: 05/21/2008
  • Issued: 04/08/2014
  • Est. Priority Date: 05/21/2008
  • Status: Active Grant
First Claim
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1. A power converter comprising:

  • a. a single-stage power-factor-correction resonant converter configured to receive an input voltage, wherein the single-stage power-factor-correction resonant converter includes an isolation transformer and a resonant tank, the resonant tank comprising a variable inductor coupled to a primary of the isolation transformer;

    b. a rectifier coupled to an output of the isolation transformer; and

    c. a bulk capacitor coupled to an output of the rectifier, wherein a voltage across the bulk capacitor is a direct-current output voltage of the single-stage power-factor-correction resonant converter, thereby providing a single voltage output bus for the single-stage power-factor-correction resonant converter, and the variable inductor is configured to tune a resonant frequency of the resonant tank in response to the direct-current output voltage thereby regulating the direct-current output voltage.

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