Patent ID: 11909220
Assignee: INTEGRATED DEVICE TECHNOLOGY, INC.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A wireless power device, comprising:
a rectifier circuit coupled to a coil;
a transmit driver coupled to the rectifier circuit, the transmit driver configured to provide power to the rectifier circuit during wireless power transmission through the coil;
a transmit detect circuit configured to detect receipt of transmitted wireless power from a second wireless power device at the coil, wherein the transmit detect circuit includes discrete diode and demodulation circuitry to provide a rectified signal related to the transmitted wireless power; and
a controller coupled to the transmit driver and the transmit detect circuit, the controller receiving the rectified signal from the transmit detect circuit and providing an alert of the presence of the transmitted wireless power from the second wireless power device, the controller activating the transmit driver to transmit wireless power in the absence of the rectified signal indicating the presence of the transmitted wireless power and asserting a collision alert in the presence of the rectified signal indicating the presence of the transmitted wireless power.