Abstract: A method of controlling a wireless power receiver can include transmitting, during a first determination phase, a foreign object detection status packet; before entering a first power transfer mode for receiving first power and before entering a second power transfer mode for receiving second power, receiving a determination result as to whether a foreign object is present determined based on the foreign object detection status packet; in response to determining that the foreign object is present based on the determination result, receiving the first power according to the first power transfer mode; and in response to determining that the foreign object is not present based on the determination result, receiving the second power according to the second power transfer mode.

Abstract: A method of controlling a wireless power transmitter can include receiving, during a first determination phase, a foreign object detection status packet; before entering a first power transfer mode for transmitting first power and before entering a second power transfer mode for transmitting second power, determining whether a foreign object is present based on the foreign object detection status packet to generate a determination result; in response to determining that the foreign object is present based on the determination result, transmitting the first power according to the first power transfer mode; in response to determining that the foreign object is not present based on the determination result, transmitting the second power according to the second power transfer mode; and determining, during a second determination phase, whether the foreign object is present while transmitting the first power in the first power transfer mode.

Abstract: Disclosed are a method of controlling wireless power transmission and an apparatus therefor. A method of controlling wireless power transmission of a wireless power transmitter includes a first packet reception phase of receiving a foreign object detection status packet, a first determination phase of determining whether the foreign object is present based on the foreign object detection status packet, and a power control phase of controlling power based on a determination result of the first determination phase, wherein the power control phase includes a first power transfer mode for transmitting first power upon determining that the foreign object is present as the determination result of the first determination phase, and a second power transfer mode for transmitting second power upon determining that the foreign object is not present as the determination result of the first determination phase.