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Multimode Battery Charger

  • US 20150069951A1
  • Filed: 09/30/2013
  • Published: 03/12/2015
  • Est. Priority Date: 09/06/2013
  • Status: Active Grant
First Claim
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1. A multimode battery charger circuit comprising:

  • a constant current control loop circuit;

    a constant voltage control loop circuit;

    a linear gate driver coupled to the constant current control loop circuit and the constant voltage control loop circuit, the linear gate driver having an output to provide a voltage to the gate of a pass transistor during linear mode charging operations;

    a pulse width modulation (PWM) control circuit coupled to the constant current control loop circuit and the constant voltage control loop circuit, the PWM control circuit having an output to control power provided by output transistors during switch mode charging operations; and

    mode control circuitry coupled to the linear gate driver and the PWM control circuit, the mode control circuitry configured to selectively enable the linear gate driver or the PWM control circuit in accordance with a charge mode indication signal.

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