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CIRCUITS AND METHODS FOR WEARABLE DEVICE CHARGING AND WIRED CONTROL

  • US 20180102605A1
  • Filed: 10/12/2017
  • Published: 04/12/2018
  • Est. Priority Date: 10/12/2016
  • Status: Active Grant
First Claim
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1. An wearable device configured for wired charging a charging and control comprising:

  • a symmetrical contact interface comprising a first contact pad and a second contact pad;

    a first p-type field effect transistor (PFET) having a first source connected to a device voltage terminal, a first gate connected to a second input path, and a drain connected to the first input path, wherein the first contact pad is connected to the first input path;

    a second PFET having a second source connected to the device voltage terminal, a second gate connected to a first input path, and a second drain connected to the second input path, wherein the second contact pad is connected to the second input path;

    a first n-type field effect transistor (NFET) having a third source connected to a device ground, a third gate connected to the second input path, and a third drain connected to the first input path; and

    a second NFET having a further source connected to the device ground, a fourth gate connected to the first input path, and a fourth drain connected to the second input path.

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