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US 9,069,540 B2Granted
Information handling system adaptive high performance power delivery
AssigneeDell Products L.P.
InventorsAndrew T. Sultenfuss, Mohammed K. Hijazi
Life of this patent
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Abstract
An information handling system provides power to a peripheral through a peripheral interface, such as a USB interface, by communicating power availability with a primary set of power parameters through a data link and communicating power availability with a secondary set of power parameters through a power link. If a peripheral device has the capability to draw power at the second power parameters, it does so while monitoring for a fold back of host power that indicates power is not available at the second power parameters.
Claims20
An information handling system comprising:
- a housing;
- a processor disposed in the housing and operable to process information;
- memory disposed in the housing and interfaced with the processor, the memory operable to store information;
- a Universal Serial Bus (USB) controller disposed in the housing and interfaced with the processor, the USB controller operable to communicate with a peripheral device through data lines and to provide power to the peripheral device through power lines;
- a USB port disposed at the housing and interfaced with the USB controller, the port operable to accept a USB cable connector to interface the data lines with data lines of a USB cable and to interface the power lines with power lines of the USB cable;
- and
- a power controller associated with the USB controller, the power controller operable to communicate through the data lines with a peripheral device before completing legacy peripheral power configuration to establish a first power parameters for providing power to the peripheral;
- wherein the power controller is further operable to communicate a power signal through the power lines before completing legacy peripheral power configuration to indicate availability of second power parameters for providing power to the peripheral;
- and
- wherein the power controller is further operable to confirm whether the second power parameters are available from the host by initiating power transfer with the first power parameters and then increasing power transfer to the second power parameters.
7 more elements
A method for providing power from a host to a peripheral through a cable, the method comprising:
- detecting an interface between the host and the peripheral through the cable;
- in response to detecting, communicating a power signal from the host to the peripheral through a power line of the cable, the power signal sent before legacy peripheral power configuration of the host and peripheral with digital data communication;
- determining at the peripheral that the power signal indicates the availability of power at a second power parameters;
- signaling between the host and peripheral the availability of power at a first power parameters through a data line of the cable, the signaling of the availability of power at a first power parameters sent before legacy peripheral power configuration of the host and peripheral with digital data communication;
- and
- confirming at the peripheral whether the second power parameters are available from the host by initiating power transfer with the first power parameters and then increasing power transfer to the second power parameters.
3 more elements
A host-to-peripheral communication system comprising:
- a serial link having data lines for communicating information;
- a power link having power lines for transferring power from the host to the peripheral;
- a power controller associated with the host and operable to communicate through the serial link the availability of power at a first power parameters before legacy peripheral power configuration of the host and peripheral with digital data communication;
- and
- a charger associated with the peripheral and operable to communicate through the serial link to receive power at the first power parameters before legacy peripheral power configuration of the host and peripheral with digital data communication;
- wherein the power controller is further operable to indicate to the charger the availability of power at a second power parameters by providing a power signal to the power link before legacy peripheral power configuration of the host and peripheral with digital data communication, the second power parameters greater than the first power parameters;
- and
- wherein the power controller is further operable to confirm whether the second power parameters are available from the host by initiating power transfer with the first power parameters and then increasing power transfer to the second power parameters.
5 more elements
Dependencies are inferred from the claim text.