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Charge pump circuit incorporating corresponding parallel charge pump stages and method therefor

  • US 7,023,260 B2
  • Filed: 06/30/2003
  • Issued: 04/04/2006
  • Est. Priority Date: 06/30/2003
  • Status: Expired due to Term
First Claim
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1. A charge pump circuit for generating a boosted voltage, said circuit comprising:

  • two charge pump stages coupled other than in series with each other, each stage respectively includingan input and an output;

    a charge transfer switch (CTS) coupling the input to the output, and having a control terminal for controlling opening and closing the CTS;

    a control circuit having an output coupled to the control terminal; and

    a charge pump capacitor coupled to the output of the stage;

    wherein the control circuit for each pump stage is respectively coupled to the output of the pump stage and to the output of the other pump stage.

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