Split power supply subsystem with isolated voltage supplies to satisfy a predetermined power limit
First Claim
1. A power subsystem comprising:
- a split power supply including at least a first voltage supply line and a second voltage supply line, wherein the voltage supply lines are configured as closely matched voltage sources, each configured to provide relatively the same voltage amount;
a voltage regulator configured to step-down a voltage provided by the first voltage supply line and a voltage provided by the second voltage supply line to generate an output voltage for a load;
a regulator control unit configured to monitor the output voltage provided to the load, wherein, if the output voltage does not equal a desired voltage, the regulator control unit is configured to provide one or more control signals to the voltage regulator to vary the output voltage such that the output voltage equals the desired voltage; and
wherein the first voltage supply line is isolated from the second voltage supply line to limit power provided through either the first or the second voltage supply line from exceeding a predetermined power limit.
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Accused Products
Abstract
A power subsystem including a mechanism for satisfying a predetermined power limit in a computer system. The power subsystem may include a split power supply and a voltage regulator. The split power supply may include at least a first voltage supply line and a second voltage supply line. The voltage supply lines may be closely matched voltage sources, each configured to provide relatively the same voltage amount. The voltage regulator may step-down a voltage provided by each of the first and second voltage supply lines to generate a desired voltage for a load. The first voltage supply line may be isolated from the second voltage supply line to limit power provided through either the first or the second voltage supply line from exceeding a predetermined power limit. The predetermined power limit may be a power limit set by U.L. standard #60950, i.e., 250 Watts.
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Citations
20 Claims
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1. A power subsystem comprising:
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a split power supply including at least a first voltage supply line and a second voltage supply line, wherein the voltage supply lines are configured as closely matched voltage sources, each configured to provide relatively the same voltage amount; a voltage regulator configured to step-down a voltage provided by the first voltage supply line and a voltage provided by the second voltage supply line to generate an output voltage for a load; a regulator control unit configured to monitor the output voltage provided to the load, wherein, if the output voltage does not equal a desired voltage, the regulator control unit is configured to provide one or more control signals to the voltage regulator to vary the output voltage such that the output voltage equals the desired voltage; and wherein the first voltage supply line is isolated from the second voltage supply line to limit power provided through either the first or the second voltage supply line from exceeding a predetermined power limit. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A computer system comprising:
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a CPU; a power subsystem including; a split power supply including at least a first voltage supply line and a second voltage supply line, wherein the voltage supply lines are configured as closely matched voltage sources, each configured to provide relatively the same voltage amount; a voltage regulator configured to step-down a voltage provided by the first voltage supply line and a voltage provided by the second voltage supply line to generate an output voltage for the CPU; a regulator control unit configured to monitor the output voltage provided to the CPU, wherein, if the output voltage does not equal a desired voltage, the regulator control unit is configured to provide one or more control signals to the voltage regulator to vary the output voltage such that the output voltage equals the desired voltage; and wherein the first voltage supply line is isolated from the second voltage supply line to limit power provided through either the first or the second voltage supply line from exceeding a predetermined power limit. - View Dependent Claims (16, 17, 18, 19)
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20. A method for a power subsystem to provide power to a load while satisfying a predetermined power limit, the method comprising:
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providing a split power supply including at least a first voltage supply line and a second voltage supply line, wherein the voltage supply lines are configured as closely matched voltage sources, each configured to provide relatively the same voltage amount; providing a voltage regulator configured to step-down a voltage provided by the first voltage supply line and a voltage provided by the second voltage supply line to generate an output voltage for the load; monitoring the output voltage provided to the load, wherein, if the output voltage does not equal a desired voltage, providing one or more control signals to the voltage regulator to vary the output voltage such that the output voltage equals the desired voltage; and isolating the first voltage supply line from the second voltage supply line to limit power provided through either the first or the second voltage supply line from exceeding the predetermined power limit.
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Specification