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Shared Power Converter for a Wireless Transmitter Device

  • US 20180062442A1
  • Filed: 02/01/2017
  • Published: 03/01/2018
  • Est. Priority Date: 08/26/2016
  • Status: Active Grant
First Claim
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1. A shared power converter circuit for a wireless energy transfer system, the shared power converter circuit comprising:

  • a leading half bridge coupled between first and second input nodes of the power converter circuit and having a first intermediate node coupled to multiple transmitter coils; and

    multiple trailing half bridges coupled between the first and second input nodes, each trailing half bridge having a second intermediate node coupled to a distinct one of the multiple transmitter coils;

    whereinthe leading half bridge is configured to simultaneously operate with each trailing half bridge as an independent full-bridge phase shift inverter; and

    a voltage supplied to each transmitter coil is independently regulated by controlling a phase shift of a corresponding trailing half bridge with respect to the leading half bridge.

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