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Power converter circuit including at least one battery

  • US 10,374,447 B2
  • Filed: 03/14/2013
  • Issued: 08/06/2019
  • Est. Priority Date: 03/14/2013
  • Status: Active Grant
First Claim
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1. A circuit comprising:

  • a first power converter circuit comprising an output;

    a second power converter circuit comprising an input, an output, and a first control circuit, whereinthe input of the second power converter circuit is coupled to the output of the first power converter circuit and is configured to receive an input signal from the first power converter circuit,the output of the second power converter circuit is configured to be coupled to a load, andthe second power converter circuit is configured to deliver at the output of the second power converter circuit a first power;

    a rechargeable battery coupled to the output of the first power converter circuit and to the input of the second power converter circuit; and

    a second control circuit coupled to the first control circuit, the second control circuit configured to control charging the rechargeable battery during a charging mode bydetecting a charge state of the rechargeable battery, andproviding a reference signal based on the detected charge state to the first control circuit, wherein the reference signal represents a desired signal level of the input signal, and wherein the first control circuit is configured to limit the input signal based on the reference signal while the first power is positive.

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