FIG. 12 is a view illustrating a method of showing data bits and byte constituting a power control message provided by the wireless power transmitter 100;
FIG. 13 is a view illustrating a packet including a power control message used in a wireless power transfer method according to the embodiments disclosed herein;
FIG. 14 is a view illustrating the operation phases of a wireless power transmitter and an electronic device according to the embodiments disclosed herein;
FIGS. 15 through 19 are views illustrating the structure of packets including a power control message between the wireless power transmitter and electronic device;
FIG. 20 is an exemplary view illustrating the heating cause of an external metal material located at the wireless power transmitter 100 according to an embodiment of the present disclosure;
FIG. 21 is an exemplary view illustrating an external metal material located between the wireless power transmitter and the wireless power receiver using a linkage flux according to an embodiment of the present disclosure;
FIGS. 22A and 22B are exemplary views illustrating a current change of an inductor (L) when an inverter of the wireless power transmitter temporarily suspends the operation while driving an LC resonant circuit;
