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Half bridge driver circuits

  • US 10,305,472 B1
  • Filed: 04/24/2018
  • Issued: 05/28/2019
  • Est. Priority Date: 09/16/2014
  • Status: Active Grant
First Claim
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1. A half bridge GaN circuit, comprising:

  • a low side circuit, comprising;

    a low side switch comprising a low side switch control gate, a first source, and a first drain, anda low side switch driver, configured to control a conductivity state of the low side switch according to a first input signal;

    a high side circuit, comprising;

    a high side switch comprising a high side switch control gate, a second source, and a second drain, wherein the second source is connected to the first drain, anda high side switch driver referenced to a voltage at the second source, wherein the high side switch driver is configured to control a conductivity state of the high side switch according to a second input signal,wherein the high side switch driver is configured to prevent a change of conductivity state of the high side switch in response to voltage transients of the voltage of the second source,wherein the low side circuit further comprises a level shift circuit configured to receive the second input signal and to generate a level shift signal configured to control an output state of the high side switch driver.

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