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Wireless charger

  • US 9,419,465 B2
  • Filed: 01/07/2013
  • Issued: 08/16/2016
  • Est. Priority Date: 01/07/2013
  • Status: Active Grant
First Claim
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1. An apparatus for wirelessly charging a receiver comprising:

  • a coil having two or more taps;

    an NFC passive tag or NFC transceiver connected to one of the taps and configured to communicate with the receiver via the taped portion of the coil to identify an appropriate charging standard for the receiver;

    at least two transmitters connected to the coil, wherein each transmitter implements a different wireless charging standard;

    a transmitter-specific switch connected between the coil and the each transmitter, wherein at least one of the transmitters is connected to the coil via one of the taps; and

    a controller configured to control the transmitter-specific switches and the transmitters in response to information from the NFC passive tag or NFC transceiver to select the appropriate charging standard and provide charging energy via the respective transmitter.

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