| CPC H02J 50/12 (2016.02) [H02J 50/80 (2016.02)] | 22 Claims |
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1. An apparatus, comprising:
transmitter circuitry, the transmitter circuitry including a transmit coil to inductively couple with a receive coil of a wireless power receiver; and
a controller to:
control the transmitter circuitry to generate a wireless power signal in the transmit coil for wireless power transfer to the wireless power receiver;
perform demodulation on a communication signal, modulated over the wireless power signal, in attempt to decode packets from the wireless power receiver;
set and run a first timer of the controller, the first timer being set to an initial value that defines a period of time;
perturb an operating point of the transmitter circuitry responsive to identifying a failure in decoding multiple packets from the wireless power receiver over the period of time;
repeat the controlling of the transmitter circuitry, the performing of demodulation on the communication signal, the setting and running of the first timer, the identifying of the failure in decoding the multiple packets over the period of time, and the perturbing of the operating point, up to a number of times until one or more packets are decoded; and
use a second timer of the controller for transmitter timeout for shutdown and restart of the wireless power transfer upon failure to correctly decode a packet from the wireless power receiver after repeated perturbings of the operating point, the initial value of the first timer being less than a value used for the second timer.
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