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Switching controller for resonant power converter

  • US 7,313,004 B1
  • Filed: 12/21/2006
  • Issued: 12/25/2007
  • Est. Priority Date: 12/21/2006
  • Status: Active Grant
First Claim
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1. A switching controller of a resonant power converter, comprising:

  • a feedback circuit coupled to a feedback terminal to receive a feedback signal for generating an adjustment signal;

    a minimum-frequency programming circuit coupled to a minimum-frequency programming terminal to generate a first current signal for determining a minimum switching frequency of the power converter;

    a maximum-frequency programming circuit coupled to a maximum-frequency programming terminal to generate a second current signal in response to the adjustment signal to determine a maximum switching frequency of the power converter; and

    an oscillation circuit generating an oscillation signal in response to the first signal and the second signal;

    wherein the oscillation signal determines a switching frequency of the power converter.

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