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Method and apparatus for fault condition protection of a switched mode power supply

  • US 6,788,514 B2
  • Filed: 05/08/2003
  • Issued: 09/07/2004
  • Est. Priority Date: 03/14/2001
  • Status: Expired due to Fees
First Claim
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1. A circuit, comprising:

  • a control circuit coupled between an energy transfer element, which is coupled to a first power supply input terminal, and a second power supply input terminal, the control circuit further coupled to receive at least feedback information of a power supply output, the control circuit to control power delivered to the power supply output from a power supply input in response to said at least feedback information of the power supply output; and

    an auto-restart circuit coupled to the control circuit to repeatedly enable and disable a power supply during a fault condition, wherein a duration of at least one disable period following a detection of a fault condition of the power supply is smaller than durations of subsequent disable periods.

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