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US 7,402,958 B2Granted
Display power partitioning
AssigneeIntel Corporation
InventorDon J. Nguyen
Life of this patent
Estimating the term…
Abstract
According to one embodiment of the present invention, a voltage regulator is disclosed. The voltage regulator includes a step-down portion to step down an input voltage to a desired voltage when the input voltage is provided by a battery power source; and a step-up portion to step up the input voltage to the desired voltage when the input voltage is provided by a system rail. In accordance with another embodiment of the present invention, the voltage regulator provides power to a display device such as an LCD, a flat panel display, a plasma screen, and a TFT display.
Claims16
A voltage regulator comprising:
- a step-down portion to step down an input voltage to a desired voltage when the input voltage is provided by a battery power source, wherein the utilization of the step-down portion reduces power loss;
- a step-up portion to step up the input voltage to the desired voltage when the input voltage is provided by a system rail of a motherboard, wherein power loss reduction is provided through one or more techniques selected from a group comprising of lessening energy storage in a component of the voltage regulator and lessening cascade power loss;
- a first comparator to compare an output voltage of the voltage regulator with a first reference voltage;
- and
- a second comparator to compare the input voltage of the voltage regulator with a second reference voltage.
2 more elements
A voltage regulator comprising:
- a step down-portion of a display panel system to step down an input voltage to a desired voltage when the input voltage is provided by a battery power source;
- a voltage regulator controller coupled to the step down portion to control an output of the voltage regulator, wherein power loss reduction is provided through one or more techniques selected from a group comprising of lessening energy storage in a component of the voltage regulator and lessening cascade power loss;
- a step-up portion to step up the input voltage to the desired voltage when the input voltage is provided by a system rail;
- a first comparator to compare an output voltage of the voltage regulator with a first reference voltage;
- and
- a second comparator to compare the input voltage of the voltage regulator with a second reference voltage.
3 more elements
Dependencies are inferred from the claim text.