Electronic device stabilizing output current of charging circuit and controlling method thereof

Abstract

Provided is an electronic device including: a battery, a resonant circuit including a coil and a capacitor configured to wirelessly receive power, a rectifying circuit configured to rectify an alternating current power provided from the resonant circuit to a direct current power, a DC/DC converter configured to convert the direct current power provided from the rectifying circuit and to output the converted direct current power, a charging circuit configured to charge the battery using the converted direct current power provided form the DC/DC converter, a controller, and a communication circuit, wherein the controller is configured to: control the charging circuit to set a magnitude of a reference current of the charging circuit to a first value, the first value being less than a maximum value of an output current of the charging circuit, control the charging circuit to set the magnitude of the reference current to a second value greater than the first value, measure a magnitude of an output current of the charging circuit after setting the magnitude of the reference current to the second value, control, based on a difference between the measured magnitude and the second value being less than or equal to a specified set value, the charging circuit to set the magnitude of the reference current to a third value greater than the second value, and control, based on the difference between the measured magnitude and the second value exceeding the specified set value, the charging circuit to set the magnitude of the reference current to the first value to receive wireless power.