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High speed tri-level input power converter gate driver

  • US 9,712,058 B1
  • Filed: 08/29/2016
  • Issued: 07/18/2017
  • Est. Priority Date: 08/29/2016
  • Status: Active Grant
First Claim
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1. A control circuit comprising:

  • a first buffer powered by a supply voltage and a reference voltage, wherein the first buffer buffers a first input on a first output and the reference voltage is greater than one quarter of the supply voltage and less than three quarters of the supply voltage;

    a second buffer powered by the reference voltage and a ground voltage, wherein the second buffer buffers a second input on a second output;

    a first level shifter, wherein the first level shifter shifts the first output to a voltage range, wherein the voltage range is larger than a delta between the supply voltage and the reference voltage;

    a second level shifter, wherein the second level shifter shifts the second output to the voltage range;

    a reference voltage generator coupled to the supply voltage and the ground voltage;

    an impedance divider in the reference voltage generator that generates the reference voltage from the supply voltage; and

    a reference voltage generator capacitor coupled between the reference voltage and the ground voltage, wherein the reference voltage generator capacitor is at least 1.5 picofarads.

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