WIRELESS POWER TRANSMISSION DEVICE AND ELECTRONIC APPARATUS

A wireless power transmission device comprises a plurality of transmission coils having different inductances and a controller. The controller wirelessly transmits a first transmission power to the electronic apparatus through a first transmission coil among the plurality of transmission coils, obtains whether it is an under-coupling mode or an over-coupling mode, when receiving power shortage information from the electronic apparatus, changes from the first transmission coil to a second transmission coil according to the obtained mode, and wirelessly transmits a second transmission power to the electronic apparatus through the changed second transmission coil. The second transmission coil is one of the remaining transmission coils except for the first transmission coil among the plurality of transmission coils.