Electronic device for providing power to external device, and operating method thereof

A method performed by an electronic device configured to provide power to an external device, the method comprising:

• based on receiving power from an external power source, supplying, by the electronic device, a bias voltage to a resistor configured to detect whether an external device is connected through a connector of the electronic device using a first circuit including a first capacitor for capacitor isolation and voltage distribution, wherein the first circuit is electrically connected to a first end of the resistor;
• based on a connection between the electronic device and the external device through the connector, providing, by the electronic device, a signal to a pulse width modulation (PWM) circuit using a second circuit including a second capacitor for capacitor isolation and voltage distribution, wherein the second circuit is electrically connected to a second end of the resistor;
• based on the signal provided from the second circuit, controlling, by the electronic device, PWM of a first switch electrically connected to a primary coil of a transformer included in a power conversion circuit of the electronic device using the PWM circuit;
• and
• providing, by the electronic device, power provided from the power conversion circuit to the external device through the connector.

One or more non-transitory computer-readable storage media storing one or more computer programs including computer-executable instructions that, when executed by one or more processors of an electronic device providing power to an external device individually or collectively, cause the electronic device to perform operations, the operations comprising:

• based on receiving power from an external power source, supplying, by the electronic device, a bias voltage to a resistor configured to detect whether an external device is connected through a connector of the electronic device using a first circuit including a first capacitor for capacitor isolation and voltage distribution, wherein the first circuit is electrically connected to a first end of the resistor;
• based on a connection between the electronic device and the external device through the connector, providing, by the electronic device, a signal to a pulse width modulation (PWM) circuit using a second circuit including a second capacitor for capacitor isolation and voltage distribution, wherein the second circuit is electrically connected to a second end of the resistor;
• based on the signal provided from the second circuit, controlling, by the electronic device, PWM of a first switch electrically connected to a primary coil of a transformer included in a power conversion circuit of the electronic device using the PWM circuit;
• and
• providing, by the electronic device, power provided from the power conversion circuit to the external device through the connector.