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High voltage integrated circuit driver with a high voltage PMOS bootstrap diode emulator

  • US 20070008010A1
  • Filed: 09/08/2006
  • Published: 01/11/2007
  • Est. Priority Date: 07/21/2004
  • Status: Active Grant
First Claim
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1. A high voltage circuit driver, comprising:

  • a high side driver cell, operable to drive a gate of a high side power MOSFET;

    a low side driver cell, operable to drive a gate of a low side power MOSFET;

    a bootstrap circuit, coupled between an output node and a supply-voltage terminal of the high side driver cell;

    a high voltage PMOS transistor, coupled between a first voltage source terminal and the bootstrap circuit, wherein the high voltage PMOS transistor is embedded in an N-isolation layer and is integrated with the driver cells;

    a bootstrap control circuit, coupled to the high voltage PMOS transistor; and

    a high side driver control circuit and a low side driver control circuit, coupled to the high side driver cell and the low side driver cell, respectively.

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