Power transmitting unit and power receiving unit with control data communication and methods for use therewith

1. A power receiving unit comprising:

a wireless power receiver configured to receive a wireless power signal from a power transmitting unit;

a wireless radio unit configured to communicate with the power transmitting unit; and

a control circuit configured to:

generate a rectified voltage from the wireless power signal, and based on control signals; and

generate first control data based on the control signals;

wherein the wireless radio unit sends the first control data to the power transmitting unit;

wherein the wireless radio unit receives second control data from the power transmitting unit, wherein the second control data includes transmitter performance data; and

wherein the control circuit adjusts the control signals in response to the second control data and based on the transmitter performance data.

2. The power receiving unit of claim 1 wherein the power transmitting unit adjusts a transmit impedance in response to the first control data.

3. The power receiving unit of claim 1 wherein the first control data includes a first rectifier duty cycle of the control circuit.

4. The power receiving unit of claim 3 wherein the first rectifier duty cycle is a percentage and wherein the first control data includes the percentage.

5. The power receiving unit of claim 4 wherein the second control data includes a second rectifier duty cycle and wherein the control circuit adjusts the control signals to achieve the second rectifier duty cycle.

6. The power receiving unit of claim 1 wherein the transmitter performance data indicates an amount of transmitter impedance mismatch of the power transmitting unit.

7. The power receiving unit of claim 1 wherein the wireless radio unit receives updates to the second control data from the power transmitting unit; and

wherein the control circuit iteratively adjusts the control signals in response to the updates of the second control data.

8. The power receiving unit of claim 7 wherein the second control data indicates an amount of transmitter impedance mismatch of the power transmitting unit and the control circuit iteratively adjusts the control signals to control the amount of transmitter impedance mismatch.

9. The power receiving unit of claim 1 wherein the wireless radio unit associates with the power transmitting unit via a connection establishment procedure.

10. A power transmitting unit comprising:

a wireless power transmitter configured to transmit a wireless power signal to a power receiving unit that includes a control circuit configured to:

generate a rectified voltage from the wireless power signal, and based on control signals; and

generate first control data based on the control signals;

a wireless radio unit configured to communicate with the power receiving unit, wherein the wireless radio unit receives the first control data from the power receiving unit; and

a controller configured to generate second control data and wherein the controller adjusts a transmit impedance in response to the first control data;

wherein the wireless radio unit transmits the second control data to the power receiving unit;

wherein the control circuit adjusts the control signals in response to the second control data; and

wherein the second control data includes transmitter performance data of the wireless power transmitter and wherein the control circuit adjusts the control signals, based on the transmitter performance data.

11. The power transmitting unit of claim 10 wherein the first control data includes a first rectifier duty cycle of the control circuit.

12. The power transmitting unit of claim 11 wherein the first rectifier duty cycle is a percentage and wherein the first control data includes the percentage.

13. The power transmitting unit of claim 12 wherein the second control data includes a second rectifier duty cycle and wherein the control circuit adjusts the control signals to achieve the second rectifier duty cycle.

14. The power transmitting unit of claim 10 wherein the transmitter performance data indicates an amount of transmitter impedance mismatch of the wireless power transmitter.

15. The power transmitting unit of claim 10 wherein the wireless radio unit transmits updates to the second control data to the power receiving unit; and

wherein the control circuit iteratively adjusts the control signals in response to the updates of the second control data.

16. The power transmitting unit of claim 15 wherein the second control data indicates an amount of transmitter impedance mismatch of the wireless power transmitter and the control circuit iteratively adjusts the control signals to control the amount of transmitter impedance mismatch of the wireless power transmitter.

17. A method comprising:

transmitting, via a wireless power transmitter, a wireless power signal to a power receiving unit that includes a control circuit configured to generate a rectified voltage from wireless power signal, and based on control signals and to generate first control data based on the control signals;

receiving, via a wireless radio unit, the first control data from the power receiving unit;

generating, via a controller, second control data that indicates an amount of transmitter impedance mismatch of the wireless power transmitter; and

transmitting, via the wireless radio unit, the second control data to the power receiving unit;

wherein the control circuit adjusts the control signals in response to the second control data.

18. The method of claim 17 wherein the second control data includes transmitter performance data of the wireless power transmitter and wherein the control circuit adjusts the control signals, based on the transmitter performance data.

19. The method of claim 18 wherein the transmitter performance data indicates an amount of transmitter impedance mismatch of the wireless power transmitter.