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FOREIGN OBJECT DETECTING CIRCUIT AND WIRELESS POWER TRANSMISSION DEVICE USING THE SAME

  • US 20180205269A1
  • Filed: 11/03/2017
  • Published: 07/19/2018
  • Est. Priority Date: 01/13/2017
  • Status: Abandoned Application
First Claim
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1. A wireless power transmission device, comprising:

  • a power amplifier configured to receive a direct current (DC) voltage and supply an alternating current (AC) power current to a transmission resonator by performing a switching operation;

    a detection device configured to detect a voltage of an output terminal of the power amplifier based on the switching operation; and

    a control unit configured to detect an external object based on a change in the voltage, and control an output of the power amplifier in response to the change.

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