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Cascadable, high efficiency charge pump circuit and related methods

  • US 6,249,446 B1
  • Filed: 08/23/2000
  • Issued: 06/19/2001
  • Est. Priority Date: 08/23/2000
  • Status: Active Grant
First Claim
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1. A charge pump circuit comprising:

  • at least one pumping capacitor;

    a plurality of switches connected to said at least one pumping capacitor; and

    a controller for generating first and second sets of switch control signals for controlling said switches in cooperation with said at least one pumping capacitor to generate an output voltage, said controller comprising a clock having first outputs for the first set of switch control signals, a transient clamp network having second outputs for the second set of switch control signals, and a respective level shifting capacitor connected between each first output and a corresponding second output and cooperating with said transient clamp network so that the second set of switch control signals is level shifted from the first set.

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