Dual inductive element charge pump buck and buck power supplies
First Claim
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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Accused Products
Abstract
A direct current (DC)-DC converter, which includes a charge pump buck power supply and a buck power supply is disclosed. The charge pump buck power supply includes a charge pump buck converter, a first inductive element, and an energy storage element. The charge pump buck converter and the first inductive element are coupled in series between a DC power supply, such as a battery, and the energy storage element. The buck power supply includes a buck converter, a second inductive element, and the energy storage element. The buck converter and the second inductive element are coupled in series between the DC power supply and the energy storage element. As such, the charge pump buck power supply and the buck power supply share the energy storage element.
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Citations
23 Claims
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1. Circuitry comprising:
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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; anda 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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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23. A method comprising:
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providing 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;providing 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; during a first converter operating mode, receiving and converting a DC power supply signal from the DC power supply using the charge pump buck power supply to provide a first switching power supply output signal to a load based on a setpoint; and during a second converter operating mode, receiving and converting the DC power supply signal from the DC power supply using the buck power supply to provide the first switching power supply output signal to the load based on the setpoint, wherein the setpoint is based on a desired voltage of the first switching power supply output signal.
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Specification