Asymmetric switching capacitor regulator
AssigneeLion Semiconductor Inc.
InventorsJohn Crossley, Hanh-Phuc Le, Alberto Alessandro Angelo Puggelli
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Abstract
The present disclosure provides an asymmetric switching capacitor regulator that is capable of providing an output voltage, covering a wide voltage range, with a high efficiency. The disclosed switching capacitor regulator is configured to generate a wide range of an output voltage by differentiating a voltage across one or more switching capacitors from a voltage across the rest of the switching capacitors in the switching capacitor regulator.
Claims33
A voltage regulator, configured to receive an input voltage at an input node and to provide an output voltage at an output node, comprising:
- an inductor;
- a first capacitor;
- a second capacitor;
- a switch matrix that is configured to alternate between a first configuration and a second configuration, wherein, in the first configuration, the switch matrix is configured to couple the first capacitor and the second capacitor in a parallel relationship through the inductor, and wherein, in the second configuration, the switch matrix is configured to couple the first capacitor and the second capacitor in a series relationship between the input node and a ground node;
- and
- a plurality of power switches configured to induce a current through the inductor to provide a voltage differential between the first capacitor and the second capacitor in the first configuration, wherein the plurality of switches are configured to alternate between a first state and a second state in the first configuration to provide the voltage differential between the first capacitor and the second capacitor,
- wherein, in the second configuration, the second capacitor is coupled to the output node and is in parallel with a decoupling capacitor.
A voltage regulator, configured to receive an input voltage at an input node and to provide an output voltage at an output node, comprising:
- an inductor;
- a first capacitor;
- a second capacitor;
- a switch matrix that is configured to alternate between a first configuration and a second configuration, wherein, in the first configuration, the switch matrix is configured to couple the first capacitor and the second capacitor in a parallel relationship through the inductor, and wherein, in the second configuration, the switch matrix is configured to couple the first capacitor and the second capacitor in a series relationship between the input node and a ground node;
- a plurality of power switches configured to induce a current through the inductor to provide a voltage differential between the first capacitor and the second capacitor in the first configuration, wherein the plurality of switches are configured to alternate between a first state and a second state in the first configuration to provide the voltage differential between the first capacitor and the second capacitor;
- and
- a third capacitor, wherein in the second configuration, the switch matrix is configured to cause the third capacitor to be in a series relationship with the first capacitor.
Dependencies are inferred from the claim text.