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US 11,239,689 B2Granted
Method and apparatus for efficient power delivery in power supply system
AssigneeCisco Technology, Inc.
InventorsDouglas Paul Arduini, Sung Kee Baek, Jonathan Lee Smith, Joel Richard Goergen
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Abstract
In one embodiment, an apparatus includes a power supply operable to output power to a load along with at least one other power supply, a sensing component for identifying a load level, and a control component for switching the power supply from a full power mode to a power saving mode based on the identified load level. The power supply shares current with the other power supply at a lower current and generally the same voltage as the other power supply while in the power saving mode.
Claims20
A power supply system comprising:
- a first power supply operable to output power to a load;
- and
- a second power supply electrically coupled in parallel with said first power supply to output electrical power to the load over a power line along with said first power supply;
- said first power supply comprising:
- a load level sensor operable to identify a load level at the power line below a specified threshold;
- and
- power saving mode controller for receiving input from the load level sensor and switching said first power supply from a full power mode to a power saving mode based on said identified load level, wherein said second power supply operates in the full power mode with the power saving mode disabled;
- wherein said first power supply shares current with said second power supply at a lower current and a same voltage as said second power supply while in said power saving mode to optimize efficiency of the power supply system.
5 more elements
A system comprising:
- a plurality of power supplies electrically coupled in parallel to output electrical power to a load, wherein at least one of the power supplies operates in full power mode and remaining power supplies are operable to switch between said full power mode and a power saving mode based on an identified load level, each of the power supplies comprising:
- a load level sensor operable to identify a load level at a power line connected to the load;
- a power saving mode controller for receiving input from the load level sensor and switching a power supply from said full power mode to said power saving mode based on said identified load level, wherein said power saving mode is disabled on said at least one of the power supplies;
- and
- a time delay device operable to delay a time between the load level sensor identifying said load level falling below a specified threshold and the power saving mode controller switching the power supply from said full power mode to said power saving mode to prevent more than one of the power supplies switching from said full power mode to said power saving mode at a same time.
2 more elements
A method comprising:
- identifying a time delay at a power supply for switching from a full power mode to a power saving mode, wherein said time delay is different than a time delay associated with another power supply in a power system providing power to a load;
- determining at the power supply, that a load level in the power system has dropped below a first threshold;
- switching from said full power mode to said power saving mode after said time delay;
- determining at the power supply, that said load level has exceeded a second threshold;
- and
- switching from said power saving mode to said full power mode.
3 more elements
Dependencies are inferred from the claim text.