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USB POWER SUPPLY APPARATUS

  • US 20160116928A1
  • Filed: 10/21/2015
  • Published: 04/28/2016
  • Est. Priority Date: 10/24/2014
  • Status: Active Grant
First Claim
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1. A USB power supply apparatus that conforms to the USB (Universal Serial Bus) specification, and that supplies electric power to a USB power reception apparatus, the USB power supply apparatus comprising:

  • a power supply circuit;

    a bus line that connects an output of the power supply circuit and the USB power reception apparatus;

    a switch provided on a path of the bus line;

    a feedback circuit that feedback controls the power supply circuit such that the output voltage of the power supply circuit approaches a reference voltage; and

    a controller that adaptively controls the reference voltage based on an electrical state of the USB power supply apparatus.

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