WIRELESS POWER TRANSMITTER, WIRELESS POWER RECEIVER, AND CONTROL METHODS THEREOF

摘要

Disclosed is a control method of a wireless power transmitter for transmitting charging power to a wireless power receiver. The control method includes receiving a communication request signal for transmitting a wireless power from the wireless power receiver, determining whether to set a communication with the wireless power receiver based on the received communication request signal, when it is determined to set the communication with the wireless power receiver, transmitting a charge command signal to control an on state of a load switch at a predetermined point in time to the wireless power receiver, applying the charging power and detecting a load change by the wireless power receiver at the predetermined point in time.