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US 11,152,859 B2Granted
Synchronous voltage regulators
AssigneeIntel Corporation
InventorGovindaraj G
Life of this patent
Estimating the term…
Abstract
In some examples, a system includes a battery, a first voltage regulator with an input, and a second voltage regulator with an input. The input of the second voltage regulator is shifted in phase relative to the input of the first voltage regulator.
Claims28
A system comprising:
- a battery;
- a first voltage regulator having an input;
- a current amplifier to provide feedback based on a load experienced by the first voltage regulator, wherein the current amplifier includes:
- an amplifier having a first input coupled to an output of the first voltage regulator, and a second input coupled to the load experienced by the first voltage regulator;
- and
- a transistor having a base terminal coupled to an output of the amplifier, wherein a collector terminal of the transistor is coupled to the first input of the amplifier, and wherein an emitter terminal of the transistor is to provide the feedback, wherein the system further comprises:
- an operational amplifier to receive the feedback from the current amplifier, the operational amplifier having an output coupled to the input of the first voltage regulator;
- and
- a second voltage regulator having an input that is dynamically shifted in phase relative to the input of the first voltage regulator, wherein the phase is dynamically shifted based on a load experienced by the second voltage regulator.
6 more elements
A method for reducing input voltage ripple, comprising:
- providing feedback, via a current amplifier, based on a load experienced by a first voltage regulator, wherein the current amplifier includes:
- an amplifier having a first input coupled to an output of the first voltage regulator, and a second input coupled to the load experienced by the first voltage regulator;
- and
- a transistor having a base terminal coupled to an output of the amplifier, wherein a collector terminal of the transistor is coupled to the first input of the amplifier, and wherein an emitter terminal of the transistor is to provide the feedback, wherein the method further comprises;
- receiving the feedback as an input at an operational amplifier, the operational amplifier having an output coupled to an input of the first voltage regulator;
- providing feedback based on a load experienced by a second voltage regulator;
- and
- dynamically shifting in phase an input to the second voltage regulator relative to the input of the first voltage regulator, wherein the phase is dynamically shifted based on the load experienced by the second voltage regulator.
5 more elements
A computing system, comprising:
- a processor;
- storage to store instructions to be executed by the processor;
- and
- a power system comprising:
- a battery;
- a first voltage regulator having an input;
- a current amplifier to provide feedback based on a load experienced by the first voltage regulator, wherein the current amplifier includes:
- an amplifier having a first input coupled to an output of the first voltage regulator, and a second input coupled to the load experienced by the first voltage regulator;
- and
- a transistor having a base terminal coupled to an output of the amplifier, wherein a collector terminal of the transistor is coupled to the first input of the amplifier, and wherein an emitter terminal of the transistor is to provide the feedback, wherein the power system further comprises:
- an operational amplifier to receive the feedback from the current amplifier, the operational amplifier having an output coupled to the input of the first voltage regulator;
- and
- a second voltage regulator having an input that is dynamically shifted in phase relative to the input of the first voltage regulator, wherein the phase is dynamically shifted based on a load experienced by the second voltage regulator.
10 more elements
Dependencies are inferred from the claim text.