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Power factor correction method and apparatus

  • US 6,043,633 A
  • Filed: 06/05/1998
  • Issued: 03/28/2000
  • Est. Priority Date: 06/05/1998
  • Status: Expired due to Term
First Claim
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1. A zero current detector for a boost converter, the boost converter including a boost switch with a first connection to an inductor having an inductor current, the zero current detector operative to detecting zero inductor current, the zero current detector comprising:

  • (a) a capacitor connected to the first connection;

    (b) a first diode with a second connection to said capacitor and a third connection to the boost switch;

    (c) a second diode connected to said second connection; and

    (d) a zero current sense output point at said second connection.

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