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Method and system for contactless power transfer in a gate driver unit

  • US 10,317,484 B2
  • Filed: 10/08/2015
  • Issued: 06/11/2019
  • Est. Priority Date: 10/09/2014
  • Status: Active Grant
First Claim
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1. A gate driver unit comprising:

  • a first power exchanging coil operatively coupled to a power source;

    a second power exchanging coil configured to receive power from the first power exchanging coil via a magnetic field;

    a field focusing element disposed between the first power exchanging coil and the second power exchanging coil and configured to focus the magnetic field onto the second power exchanging coil;

    a compensation coil disposed between the field focusing element and the second power exchange coil and configured to compensate a change in phase angle resulting from a misalignment of the first power exchanging coil and the second power exchanging coil;

    a first circuit coupled to the second power exchanging coil; and

    a gate drive subunit operatively coupled to the first circuit and configured to provide an output signal to a control terminal corresponding to a controllable switch of a second circuit.

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