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Low-loss noise-resistant high-temperature gate driver circuits

  • US 7,965,522 B1
  • Filed: 09/25/2009
  • Issued: 06/21/2011
  • Est. Priority Date: 09/26/2008
  • Status: Active Grant
First Claim
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1. An amplitude modulated isolated gate driver method for generating a pulse width modulated output signal, the circuit comprising:

  • receiving a pulse width modulated input signal having a first state and a second state;

    generating a generated signal including a positive-negative oscillating output signal during the first state and an off signal during the second state;

    isolating the generated signal using a transformer to create an isolated oscillating signal;

    rectifying the isolated oscillating signal to create an isolated rectified signal;

    controlling a threshold capacitor charge level with the isolated rectified signal; and

    generating a pulse width modulated output signal using the threshold capacitor charge level.

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