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WIRELESS CHARGER CIRCUIT AND METHOD

  • US 20140194160A1
  • Filed: 01/04/2013
  • Published: 07/10/2014
  • Est. Priority Date: 01/04/2013
  • Status: Active Grant
First Claim
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1. In a charging system for a mobile device including a transmitter and a receiver, the transmitter comprising:

  • a first interface to a power source having a first terminal and a second terminal;

    a second interface to the receiver having a first terminal and a second terminal;

    a polarity detection circuit coupled to the first and second terminals of the second interface for detecting polarities of the first and second terminals of the second interface; and

    first and second switches controlled by the polarity detection circuit, wherein the first switch selectively connects the first terminal of the first interface to either the first terminal of the second interface or the second terminal of the second interface, and wherein the second switch selectively connects the first terminal of the first interface to either the first terminal of the second interface or the second terminal of the second interface.

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