Apparatuses and related methods for communication with a wireless power receiver
First Claim
1. An apparatus for wireless power transfer, the apparatus comprising:
- a wireless power receiver, including;
a receive coil configured to generate an AC power signal responsive to a wireless power signal;
a rectifier coupled to the receive coil and configured to receive the AC power signal and generate a DC rectified power signal;
a first regulator coupled with the rectifier to receive the DC rectified power signal and generate an output power signal;
a second regulator coupled with the rectifier to receive the rectified power signal and generate an output voltage;
a secondary storage device coupled with the second regulator to receive the output voltage of the second regulator; and
control logic coupled to the second regulator and configured to communicate a wireless communication signal across the receive coil by adjusting an impedance of the second regulator;
wherein an impedance of the first regulator is independent of said communicating the wireless communication signal;
wherein the control logic is coupled to the first regulator to control the first regulator to generate the output power signal; and
the control logic is configured to communicate the wireless communication signal across the receive coil by adjusting the impedance of the second regulator but not the first regulator.
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Accused Products
Abstract
A wireless power enabled apparatus may comprise a wireless power receiver that includes a receive coil configured to generate an AC power signal responsive to a wireless power signal, a rectifier including a plurality of switches configured to receive the AC power signal and generate a DC rectified power signal, a regulator operably coupled with the rectifier to receive the DC rectified power signal and generate an output power signal, and control logic configured to generate a communication signal responsive to adjusting an input impedance of the regulator. A method of operating a wireless power receiver includes generating a rectified voltage responsive to receiving a wireless power signal, generating an output voltage from the rectified voltage with a voltage regulator, and controlling the voltage regulator during a communication mode of wireless power receiver to modulate a characteristic of the voltage regulator with data for transmission to a wireless power transmitter.
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Citations
14 Claims
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1. An apparatus for wireless power transfer, the apparatus comprising:
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a wireless power receiver, including; a receive coil configured to generate an AC power signal responsive to a wireless power signal; a rectifier coupled to the receive coil and configured to receive the AC power signal and generate a DC rectified power signal; a first regulator coupled with the rectifier to receive the DC rectified power signal and generate an output power signal; a second regulator coupled with the rectifier to receive the rectified power signal and generate an output voltage; a secondary storage device coupled with the second regulator to receive the output voltage of the second regulator; and control logic coupled to the second regulator and configured to communicate a wireless communication signal across the receive coil by adjusting an impedance of the second regulator; wherein an impedance of the first regulator is independent of said communicating the wireless communication signal; wherein the control logic is coupled to the first regulator to control the first regulator to generate the output power signal; and the control logic is configured to communicate the wireless communication signal across the receive coil by adjusting the impedance of the second regulator but not the first regulator. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A wireless power system comprising:
- a wireless power receiver, including;
a receive coil; a rectifier coupled to the receive coil, configured to receive a power signal generated from the receive coil and generate a rectified voltage in response thereto; a first regulator configured to receive the rectified voltage and generate an output power signal in response thereto; a second regulator configured to receive the rectified voltage in parallel with the first regulator and generate an output voltage; a secondary storage device configured to receive the output voltage of the second regulator; and a first control logic coupled to the second regulator and configured to communicate a wireless communication signal across the receive coil by adjusting an impedance of the second regulator during a communication mode of the wireless power receiver; wherein an impedance of the first regulator is independent of said communicating the wireless communication signal; wherein the first control logic is coupled to the first regulator to control the first regulator to generate the output power signal; and the first control logic is configured to communicate the wireless communication signal across the receive coil by adjusting the impedance of the second regulator but not the first regulator. - View Dependent Claims (9, 13, 14)
- a wireless power receiver, including;
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10. A method of operating a receiver side of a wireless power transfer system, the method comprising:
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generating a rectified voltage responsive to receiving a wireless power signal from a receive coil; generating an output power signal from the rectified voltage with a first voltage regulator; generating an output voltage from the rectified voltage with a second voltage regulator; receiving the output voltage from the second voltage regulator by a secondary storage device; and controlling the second voltage regulator during a communication mode of the receiver side to communicate a wireless communication signal across the receive coil by adjusting an impedance of the second voltage regulator; wherein an impedance of the first voltage regulator is independent of said communicating the wireless communication signal; and wherein the communication signal is communicated by adjusting the impedance of the second voltage regulator but not the first voltage regulator. - View Dependent Claims (11, 12)
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Specification