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US 10,539,971 B2Granted
Adaptive voltage scaling circuitry
AssigneeViaSat, Inc.
InventorBranislav Petrovic
Life of this patent
Estimating the term…
Abstract
A circuit may include a first voltage regulator to supply a main circuit and a second voltage regulator to supply a test circuit. The test circuit may produce a test signal having a characteristic dependent on the second regulated supply voltage. A controller may adjust second voltage regulator to a threshold level to induce a change in the characteristic of the test signal. The controller may adjust the first voltage regulator based on the threshold level of the second regulated supply voltage.
Claims20
A circuit comprising:
- a first voltage regulator to produce a first regulated supply voltage for a main circuit;
- a second voltage regulator to produce a second regulated supply voltage;
- a plurality of test circuits to produce respective test signals, each having a characteristic dependent on the second regulated supply voltage;
- and
- a controller to control the second voltage regulator to adjust the second regulated supply voltage to one or more threshold levels determined based only on changes detected in the characteristics of the respective test signals produced by the plurality of test circuits,
- the controller to control the first voltage regulator to adjust the first regulated supply voltage based on a threshold level of the second regulated supply voltage among the one or more threshold levels having a maximum value.
3 more elements
A method in a circuit comprising:
- producing a first regulated supply voltage for a main circuit;
- producing at least one second regulated supply voltage for a plurality of test circuits;
- determining a plurality of threshold levels for the plurality of test circuits, including:
- producing one or more test signals, each having a characteristic dependent on the at least one second regulated supply voltage;
- and
- adjusting the at least one second regulated supply voltage to a threshold level that is determined based only on changes detected in the characteristic of the one or more test signals produced by said each test circuit;
- and
- adjusting the first regulated supply voltage based on a maximum threshold level among the plurality of threshold levels.
5 more elements
Dependencies are inferred from the claim text.