Voltage regulator that bases control on a state of a power conservation mode
First Claim
1. A switching regulator for use with a computer system having a power conservation mode, comprising:
- a switch circuit coupled to an input voltage source to produce an output voltage;
a sampling storage device;
a sampling circuit; and
a controller to;
operate the sampling circuit to first provide an indication of the output voltage to the sampling storage device at a switching frequency when the computer system is not in the power conservation mode,when the computer system is in the power conservation mode, operate the sampling circuit to continuously provide the indication to the sampling storage device for substantially the duration of the power conservation mode, andbased on the first and continuously provided indications, interact with the switch circuit to regulate the output voltage.
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Accused Products
Abstract
A switching regulator for use with a computer system having a power conservation mode includes a switch circuit, a sampling storage device, a sampling circuit and a controller. The switch circuit is coupled to an input voltage source to produce an output voltage, and the switch circuit provides an indication of a parameter of the regulator. When the computer system is not in a power conservation mode, the controller operates the sampling circuit to provide the indication to the sampling storage device at a switching frequency. When the computer system is in the power conservation mode, the controller operates the sampling circuit to continuously provide the indication to the sampling storage device for substantially the duration of the power conservation mode. Based on the indications provided to the sampling storage device, the controller interacts with the switch circuit to regulate the output voltage.
24 Citations
24 Claims
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1. A switching regulator for use with a computer system having a power conservation mode, comprising:
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a switch circuit coupled to an input voltage source to produce an output voltage; a sampling storage device; a sampling circuit; and a controller to; operate the sampling circuit to first provide an indication of the output voltage to the sampling storage device at a switching frequency when the computer system is not in the power conservation mode, when the computer system is in the power conservation mode, operate the sampling circuit to continuously provide the indication to the sampling storage device for substantially the duration of the power conservation mode, and based on the first and continuously provided indications, interact with the switch circuit to regulate the output voltage. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method for use with a computer system having a power conservation mode comprising:
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when the computer system is not in the power conservation mode, sampling indications of an output voltage at a switching frequency; when the computer system is in the power conservation mode, obtaining a substantially continuous indication of the output voltage for substantially the duration of the power conservation mode, and regulating the output voltage of the regulator based on the continuous and sampled indications. - View Dependent Claims (10, 11, 12)
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13. A computer system having a power conservation mode comprising:
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a processor; and a switching regulator coupled to provide an output voltage to the processor to; obtain sampled indications of the output voltage at a switching frequency when the computer system is not in the power conservation mode; obtain a substantially continuous indication of the output voltage when the computer system is in the power conservation mode; and regulate the output voltage based on the continuous and sampled indications. - View Dependent Claims (14, 15, 16, 17)
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18. A computer system having a power conservation mode, comprising:
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a processor; a switch circuit coupled to an input voltage source to furnish an output voltage to the processor; a sampling storage device; a sampling circuit; and a controller to; operate the sampling circuit to provide an indication of the output voltage to the sampling storage device at a switching frequency when the computer system is not in the power conservation mode; when the computer system is in the power conservation mode, operate the sampling circuit to continuously provide the indication of the output voltage to the sampling storage device for substatially the duration of the power conservation mode, and based on the sampled and continuous indications, interact with the switch circuit to the output voltage. - View Dependent Claims (19, 20, 21, 22, 23, 24)
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Specification