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Portable devices having multiple power interfaces

  • US 8,217,619 B2
  • Filed: 12/07/2010
  • Issued: 07/10/2012
  • Est. Priority Date: 10/06/2006
  • Status: Active Grant
First Claim
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1. A system comprising:

  • a solar power source;

    a sensing unit;

    an output node coupled to the sensing unit;

    a regulator having first, second, and third nodes, the first node coupled to the solar power source and the second node coupled to the sensing unit; and

    a controller coupled to the output node, the sensing unit, and the third node of the regulator, the controller operative to;

    control operation of the regulator based on a voltage signal at the output node and a current signal detected by the sensing unit; and

    maintain a peak power condition by setting a voltage operating point for the regulator.

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