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Method of and apparatus for driving a dual gated MOSFET

  • US 6,870,217 B2
  • Filed: 10/16/2003
  • Issued: 03/22/2005
  • Est. Priority Date: 08/23/2002
  • Status: Expired due to Term
First Claim
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1. A circuit for driving a dual-gated MOSFET, said dual-gated MOSFET being switchable between conduction and blocking modes, said dual-gated MOSFET having a shielding gate, a switching gate, a gate-to-drain overlap region, and a drain-to-source resistance when the MOSFET is in the conduction mode, said circuit comprising:

  • means for generating a first voltage signal for driving said shielding gate, said first voltage signal having a first voltage level for charging the gate-to-drain overlap region and a fourth voltage level for reducing the drain-to-source resistance when the MOSFET is in the conduction mode;

    means for generating a second voltage signal for driving the switching gate, said second voltage signal being switchable between a low and a high voltage level; and

    control means for controlling each of said means for generating to thereby switch the MOSFET between the conduction and blocking modes.

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