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PUSH-PULL DRIVER FOR GENERATING A SIGNAL FOR WIRELESS POWER TRANSFER

  • US 20130293189A1
  • Filed: 11/15/2012
  • Published: 11/07/2013
  • Est. Priority Date: 05/07/2012
  • Status: Active Grant
First Claim
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1. A transmitter for transferring power wirelessly such that a waveform produced at an output node is not a substantially square waveform, comprising:

  • a first circuit configured to generate a first signal, the first circuit comprising a first inductor;

    a second circuit configured to generate a second signal out of phase with the first signal, the second circuit comprising a second inductor inductively coupled with the first inductor, the first inductor and the second inductor sharing a node, the first inductor and the second inductor having a leakage inductance of at least a minimum value so as to not produce the substantially square waveform at an output of the first circuit and at an output of the second circuit; and

    a filter circuit configured to filter the first signal and the second signal, an output of the filter circuit configured to drive a load.

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