Wireless power receiver voltage control enabling simultaneous communications to transmitter in over-voltage state
First Claim
Patent Images
1. An electronic device comprising:
- circuitry configured toreceive a wirelessly induced voltage from another device via a magnetically induced connection with the another device,determine that an overvoltage condition exists in a case that the wirelessly induced voltage exceeds a first threshold voltage,control switches of a rectifier that converts the wirelessly induced voltage to a rectified voltage, wherein each of the switches of the rectifier include a plurality of parallel-connected switch segments, andconfigure one or more of the plurality of parallel-connected switch segments of one or more of the switches of the rectifier to operate in a voltage suppression mode by directly controlling a gate voltage of the one or more of the plurality of parallel-connected switch segments, whereinthe one or more the one or more of the plurality of parallel-connected switch segments operating in the voltage suppression mode are configured to provide a discharge path for a shunting current to reduce the rectified voltage in response to a determination that the overvoltage condition exists.
4 Assignments
0 Petitions
Accused Products
Abstract
A wireless power receiver includes circuitry configured to receive a wirelessly induced voltage from a wireless power transmitter via a magnetically induced connection with the wireless power transmitter. It is determined that an overvoltage condition exists when the wirelessly induced voltage exceeds a threshold voltage, and the wirelessly induced voltage is reduced in response to determining that the overvoltage condition exists. The circuitry communicates the overvoltage condition to the wireless power transmitter via the magnetically induced connection while over-voltage protection is enabled.
-
Citations
19 Claims
-
1. An electronic device comprising:
-
circuitry configured to receive a wirelessly induced voltage from another device via a magnetically induced connection with the another device, determine that an overvoltage condition exists in a case that the wirelessly induced voltage exceeds a first threshold voltage, control switches of a rectifier that converts the wirelessly induced voltage to a rectified voltage, wherein each of the switches of the rectifier include a plurality of parallel-connected switch segments, and configure one or more of the plurality of parallel-connected switch segments of one or more of the switches of the rectifier to operate in a voltage suppression mode by directly controlling a gate voltage of the one or more of the plurality of parallel-connected switch segments, wherein the one or more the one or more of the plurality of parallel-connected switch segments operating in the voltage suppression mode are configured to provide a discharge path for a shunting current to reduce the rectified voltage in response to a determination that the overvoltage condition exists. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 17)
-
-
15. A method comprising:
-
receiving, at an electromagnetic coil of a device, a wirelessly induced voltage from another device via a magnetically induced connection with the another device; determining, via circuitry of the device, that an overvoltage condition exists in a case that the wirelessly induced voltage exceeds a first threshold voltage; control, via the circuitry, switches of a rectifier that converts the wirelessly induced voltage to a rectified voltage, wherein each of the switches of the rectifier include a plurality of parallel-connected switch segments; and configure, via the circuitry, one or more of the plurality of parallel-connected switch segments of one or more of the switches of the rectifier to operate in a voltage suppression mode by directly controlling a gate voltage of the one or more of the plurality of parallel-connected switch segments, wherein the one or more the one or more of the plurality of parallel-connected switch segments operating in the voltage suppression mode are configured to provide a discharge path for a shunting current to reduce the rectified voltage in response to a determination that the overvoltage condition exists. - View Dependent Claims (18)
-
-
16. A wireless power receiver comprising:
circuitry configured to receive a wirelessly induced Power Matters Alliance (PMA) or Wireless Power Consortium (WPC) signal at a voltage from a wireless power transmitter via a magnetically induced connection with the transmitter, determine that an overvoltage condition exists in a case that the voltage exceeds a first threshold voltage, control switches of a rectifier that converts the wirelessly induced voltage to a rectified voltage, wherein each of the switches of the rectifier include a plurality of parallel-connected switch segments, and configure one or more of the plurality of parallel-connected switch segments of one or more of the switches of the rectifier to operate in a voltage suppression mode by directly controlling a gate voltage of the one or more of the plurality of parallel-connected switch segments, wherein the one or more the one or more of the plurality of parallel-connected switch segments operating in the voltage suppression mode are configured to provide a discharge path for a shunting current to reduce the rectified voltage in response to a determination that the overvoltage condition exists. - View Dependent Claims (19)
Specification