Information Handling System Selective Local and Remote Charger Control
First Claim
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1. A portable information handling system comprising:
- a housing;
a processor disposed in the housing and operable to execute instructions to process information;
a memory disposed in the housing and interfaced with the processor, the memory operable to store the information;
a port disposed at the housing and operable to accept an external cable;
a port controller interfaced with the port and operable to communicate with external devices through the external cable;
a charger interfaced with the port and operable to accept power provided to the port and convert the power to a system voltage;
a switching device interfaced with the port and operable to selectively direct power from the port to one of either the charger or a system bus; and
a power manager interfaced with the port controller and the switching device, the power manager operable to selectively direct power with the switch based at least in part on information communicated from the external device through the port.
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Abstract
A portable information handling system selectively accepts power transferred from an external device through a port, such as USB Type C port, with one of a first or second power configuration. The first power configuration accepts power regulated by a charger of an external device and routed directly to a system bus and battery of the portable information handling system. The second power configuration accepts power regulated by an internal charger of the portable information handling system, such as a narrow voltage direct current charger.
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Citations
20 Claims
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1. A portable information handling system comprising:
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a housing; a processor disposed in the housing and operable to execute instructions to process information; a memory disposed in the housing and interfaced with the processor, the memory operable to store the information; a port disposed at the housing and operable to accept an external cable; a port controller interfaced with the port and operable to communicate with external devices through the external cable; a charger interfaced with the port and operable to accept power provided to the port and convert the power to a system voltage; a switching device interfaced with the port and operable to selectively direct power from the port to one of either the charger or a system bus; and a power manager interfaced with the port controller and the switching device, the power manager operable to selectively direct power with the switch based at least in part on information communicated from the external device through the port. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method for providing power to a portable information handling system, the method comprising:
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determining at the information handling system a battery charging characteristic of an external device coupled to a port of the information handling system; directly coupling the port power to the information handling system voltage bus if the external device is a first type; and directing power from the port through a charger and then to the system bus if the external device is a second type. - View Dependent Claims (10, 11, 12, 13, 14)
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15. An information handling system power system comprising:
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a battery; a port operable to interface with an external power supply; a charger operable to convert power received from the external power supply to an internal power supply voltage; a switching device operable to selectively connect the external power supply with one of the charger or the battery; and a power manager interfaced with the switching device and operable to select the connection to the charger or battery based at least in part on information communicated with the external power supply. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification