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Synchronous rectifier and controller for inductive coupling

  • US 7,920,396 B2
  • Filed: 07/13/2007
  • Issued: 04/05/2011
  • Est. Priority Date: 07/13/2007
  • Status: Active Grant
First Claim
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1. A synchronous switch circuit, comprising:

  • an inductor configured to generate an alternating current voltage in response to a received changing electromagnetic field;

    a synchronous rectifier comprising first and second high side switches and first and second low side switches that are configured to rectify the alternating current voltage to produce a direct current voltage;

    an energy storage device configured to store energy from the direct current voltage; and

    control circuitry configured to control the first and second high side switches and the first and second low side switches in response to a state of the alternating current voltage.

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