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Battery charge control architecture for constant voltage maximum power operation

  • US 6,118,254 A
  • Filed: 07/30/1999
  • Issued: 09/12/2000
  • Est. Priority Date: 07/30/1999
  • Status: Expired due to Term
First Claim
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1. A charging circuit, comprising:

  • a first regulator functionally connected to drive a power bus up to a first set point; and

    a second regulator functionally connected to draw power from said power bus and supply power to an output;

    wherein said first regulator attempts to hold said power bus at said first set point; and

    wherein said second regulator is powered from said power bus, and is controlled not to pull the voltage of said power bus below a second set point which is lower than said first set point;

    whereby said first regulator is operated at approximately maximum output power.

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