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Regulated high side gate driver circuit for power transistors

  • US 10,504,769 B2
  • Filed: 11/25/2015
  • Issued: 12/10/2019
  • Est. Priority Date: 12/09/2014
  • Status: Active Grant
First Claim
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1. A regulated high side gate driver circuit for power transistors, comprising:

  • a gate driver comprising a high side positive supply voltage port, a high side negative supply voltage port, a driver input and a driver output; and

    a floating voltage regulator comprising;

    a positive regulator input, connectable to a high side DC voltage supply,a regulated DC voltage output,a negative regulator input,a linear regulating device connected to the regulated DC voltage output and configured for suppressing noise and ripple voltage on the high side DC voltage supply in the regulated DC voltage output,a DC reference voltage generator configured to generate a DC reference voltage at a control terminal of the linear regulating device to set a DC voltage level at the regulated DC voltage output,a regulation capacitor connected between positive and negative terminals of the DC reference voltage generator, and configured to suppress noise and ripple within the generated DC reference voltage;

    wherein the negative regulator input is connected to the high side negative supply voltage port and the regulated DC voltage output is connected to the high side positive supply voltage port of the gate driver.

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