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US 12,113,588 B2Granted
Initialization and synchronization for pulse power in a network system
AssigneeCisco Technology, Inc.
InventorsDouglas Paul Arduini, Sung Kee Baek, Richard Anthony O'Brien, Joel Richard Goergen, Chad M. Jones, Jason DeWayne Potterf, Ruqi Li
Life of this patent
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Abstract
In one embodiment, a method includes receiving low voltage pulse power from power sourcing equipment at a powered device, synchronizing the powered device with a waveform of the low voltage pulse power received from the power sourcing equipment, and operating the powered device with high voltage pulse power received from the power sourcing equipment.
Claims20
A method comprising:
- receiving first pulse power from power sourcing equipment at a powered device;
- synchronizing the powered device with a waveform of the first pulse power received from the power sourcing equipment;
- and
- operating the powered device with second pulse power received from the power sourcing equipment,
- wherein the first pulse power is at a power level lower than a power level of the second pulse power, and
- wherein receiving the first pulse power and synchronizing are performed for each phase of a multi-phase pulse power system.
3 more elements
A method comprising:
- receiving pulse power from power sourcing equipment at a powered device with a modulator switch open;
- coupling isolated voltage at the powered device when a pulse of the pulse power is on;
- energizing a housekeeping circuit at the powered device;
- and
- turning on the modulator switch at the powered device after a specified number of pulses of the pulse power are received to power the powered device with the pulse power.
2 more elements
A powered device comprising:
- an input for receiving first pulse power from power sourcing equipment at the powered device;
- a modulator switch;
- and
- a controller for synchronizing the powered device with a waveform of the first pulse power received from the power sourcing equipment and switching to operation with second pulse power, wherein the controller is configured to turn on the modulator switch after a modulator switch at the power sourcing equipment is turned on and to turn off the modulator switch at the powered device before the modulator switch at the power sourcing equipment is turned off,
- wherein the first pulse power is at a power level lower than a power level of the second pulse power.
2 more elements
Dependencies are inferred from the claim text.