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SWITCHING RECTIFIER CIRCUIT AND BATTERY CHARGER USING SAME

  • US 20130235635A1
  • Filed: 11/11/2011
  • Published: 09/12/2013
  • Est. Priority Date: 11/19/2010
  • Status: Active Grant
First Claim
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1. A switching rectification circuit, comprising:

  • a first switch connected between a terminal to which a first AC voltage is applied and a terminal to which a DC voltage is applied;

    a second switch connected between a terminal to which a second AC voltage is applied and the terminal to which the DC voltage is applied;

    a third switch connected between the terminal to which the first AC voltage is applied and a terminal to which a reference voltage is applied;

    a fourth switch connected between the terminal to which the second AC voltage is applied and the terminal to which the reference voltage is applied;

    a first comparison circuit adapted to generate from the first AC voltage and the DC voltage a first on detection signal and a first off detection signal individually;

    a second comparison circuit adapted to generate from the second AC voltage and the DC voltage a second on detection signal and a second off detection signal individually; and

    a timing generator adapted to control turning on and off of the first to fourth switches based on at least outputs of the first and second comparison circuits.

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