Power controls
AssigneeHewlett-Packard Development Company, L.P.
InventorsPatrick Ferguson, Chien-Hao Lu, Chih Liang Li, Szu Tao Tong
Life of this patent
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Abstract
An example disclosed herein is a non-volatile storage medium including instructions relating to control of power that, when executed by a processor, cause the processor to monitor a supply of power to a regulator, decouple supply of power to the regulator when the monitored supply of power is below a predetermined level, couple a power pack to the regulator to supply power to the regulator when the monitored supply of power is below the predetermined level, and generate an Advanced Configuration and Power Interface (ACPI) G1 Sleeping state signal when the monitored supply of power is below the predetermined level.
Claims15
A power control circuit, comprising:
- a regulator including an input;
- a power supply;
- a power monitor including an input coupled to the power supply and an output coupled to a power source selector, wherein the power monitor is to determine a power level supplied to the input of the regulator from the power supply;
- a power pack including an output;
- a flow control module including a first state to couple the power pack output to the regulator input;
- and
- the power source selector including a first input coupled to the power supply, a second input coupled to the power pack output via the flow control module, an output coupled to the regulator input, and a control input, coupled to the power monitor output, to:
- selectively couple, at the power source selector, the power supply to the regulator input via the first input and the power source selector output responsive to the power level determined by the power monitor being at least at a threshold level, and
- selectively decouple, at the power source selector, the power supply from the regulator input and selectively couple, at the power source selector, the power pack output to the regulator input via the second input and the power source selector output responsive to the power level determined by the power monitor being below the threshold level.
A method of controlling power, comprising:
- providing a supply of power from a power supply to a regulator;
- monitoring the supply of power to the regulator via a power monitor;
- coupling, at a flow control module, an output of the regulator to an input of a power pack to charge the power pack via the regulator responsive to a determination by the power monitor that the monitored supply of power is at least at a predetermined level;
- decoupling the supply of power from the regulator by decoupling a first input of a power source selector from a power source selector output responsive to a determination by the power monitor that the monitored supply of power is below the predetermined level;
- reconfiguring the flow control module to decouple the output of the regulator from the input of the power pack and couple an output of the power pack to an input of the power source selector to discharge the power pack to supply power to the regulator responsive to the determination by the power monitor that the monitored supply of power is below the predetermined level;
- and
- generating an Advanced Configuration and Power Interface (ACPI) G1 Sleeping state signal responsive to the determination by the power monitor that the monitored supply of power is below the predetermined level.
A non-volatile storage medium comprising instructions relating to control of power that, when executed by a processor, cause the processor to:
- monitor, via a power monitor, a supply of power from a power supply to a regulator;
- couple the power supply to the regulator by coupling an input of a power source selector, connected to an output of the power supply, to a power source selector output coupled to an input of the regulator responsive to the power monitor detecting the monitored supply of power is at least at a predetermined level;
- decouple the power supply from the regulator by decoupling a first input of a power source selector from a power source selector output responsive to the power monitor detecting the monitored supply of power is below the predetermined level;
- couple an output of a power pack to a second input of the power source selector and couple the second input of the power source selector to the power source selector output connected to the regulator to supply power to the regulator responsive to the power monitor detecting the monitored supply of power is below the predetermined level;
- and
- generate an Advanced Configuration and Power Interface (ACPI) G1 Sleeping state signal responsive to the power monitor detecting the monitored supply of power is below the predetermined level.
Dependencies are inferred from the claim text.