Information handling system, current and voltage mode power adapter, and method of operation
First Claim
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1. An information handling system comprising:
- a power rail to distribute power to at least a portion of the information handling system;
a power adapter coupled to the power rail, the power adapter operable as a voltage source in a first power supply voltage/current region and operable as a current source in a second power supply voltage/current region; and
a battery control circuit to couple a battery to the power rail, the battery control circuit capable of supplying current from the battery to the power rail when the power adapter is operating in at least a portion of the second power supply voltage/current region.
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Abstract
An information handling system includes a power rail to distribute power to at least a portion of the information handling system. A power adapter is or can be coupled to the power rail, the power adapter operable as a voltage source in a first power supply voltage/current region and operable as a current source in a second power supply voltage/current region. A battery control circuit couples a battery to the power rail, the battery control circuit capable of supplying current from the battery to the power rail when the power adapter is operating in at least a portion of the second power supply voltage/current region.
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Citations
21 Claims
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1. An information handling system comprising:
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a power rail to distribute power to at least a portion of the information handling system;
a power adapter coupled to the power rail, the power adapter operable as a voltage source in a first power supply voltage/current region and operable as a current source in a second power supply voltage/current region; and
a battery control circuit to couple a battery to the power rail, the battery control circuit capable of supplying current from the battery to the power rail when the power adapter is operating in at least a portion of the second power supply voltage/current region. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method of supplying power to an information handling system, the method comprising:
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under a first set of load conditions, supplying current to the information handling system from a power adapter at a supply voltage set by the power adapter;
under a second set of load conditions, supplying current to the information handling system from the power adapter without controlling the voltage output at the power adapter; and
under the second set of load conditions, supplying supplemental current to the information handling system from a battery at a supply voltage determined by the battery. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17)
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18. A power adapter for an information handling system, the power adapter comprising:
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a voltage control section to set an output voltage of the power adapter in a nominal supply voltage range when an output current of the power adapter is below a first current level; and
a current control section to control the output current of the power adapter when the output current of the power adapter is above the first current level, the current control section allowing the output voltage of the power adapter to fall below the nominal supply voltage range. - View Dependent Claims (19, 20, 21)
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Specification