CPC H04B 5/0037 (2013.01) [H02J 7/00045 (2020.01); H02J 7/02 (2013.01); H02J 50/10 (2016.02); H02J 50/80 (2016.02); H04W 36/03 (2018.08); H02J 50/40 (2016.02); H02J 50/60 (2016.02)] | 20 Claims |
1. A wireless power receiver for receiving wireless power based on an out-band communication, comprising:
a power pickup circuit configured to receive wireless power from a wireless power transmitter based on magnetic coupling with the wireless power transmitter in an operation frequency and transform an alternate current (AC) signal generated by the wireless power to a direct current (DC) signal;
a communication/control circuit configured to be provided with the DC signal from the power pickup circuit, perform a handover to the out-band communication using a frequency except the operating frequency in an in-band communication using the operation frequency, transmit power characteristic information to the wireless power transmitter or receive the power characteristic information from the wireless power receiver based on the out-band communication before entering a power transfer phase, and perform a process of saving power state information determined during the power transfer phase; and
a load configured to receive the direct current from the power pickup circuit.
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