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Dual inductive element charge pump buck and buck power supplies

  • US 9,577,590 B2
  • Filed: 07/09/2013
  • Issued: 02/21/2017
  • Est. Priority Date: 04/20/2010
  • Status: Active Grant
First Claim
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1. Circuitry comprising:

  • a charge pump buck power supply comprising a charge pump buck converter, a first inductive element, and an energy storage element, such that the charge pump buck converter and the first inductive element are coupled in series between a direct current (DC) power supply and the energy storage element;

    the charge pump buck converter has a first output inductance node and comprises a plurality of shunt pump buck switching elements coupled in series between the first output inductance node and a ground; and

    the first inductive element is coupled between the first output inductance node and the energy storage element; and

    a buck power supply comprising a buck converter, a second inductive element, and the energy storage element, such that;

    the buck converter and the second inductive element are coupled in series between the DC power supply and the energy storage element; and

    the charge pump buck power supply and the buck power supply share the energy storage element.

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