Electronic apparatus comprising PFC circuit and control method thereof

A control method of an electronic apparatus comprising a power factor correction (PFC) circuit that includes an inductor and a switch serially connected to the inductor and a control circuit controlling operations of the PFC circuit, the control method comprising:

• based on an amount of a current flowing in the PFC circuit being less than or equal to a threshold current, operating the PFC circuit in a standby mode;
• and
• based on an output voltage of the PFC circuit being less than a threshold output voltage corresponding to the standby mode, adjusting the output voltage such that the output voltage corresponds to a reference voltage by applying a signal for on-off control of the switch included in the PFC circuit to the switch,
• wherein the adjusting the output voltage comprises:
• identifying an on-off frequency of the switch based on a reference current level for limiting a peak current of the inductor in the standby mode;
• and
• applying the signal to the switch based on the on-off frequency of the switch.

An electronic apparatus comprising:

• a power factor correction (PFC) circuit including an inductor and a switch serially connected to the inductor;
• and
• a control circuit configured to:
• detect an amount of current flowing in the PFC circuit and, based on the amount of current being less than or equal to a threshold current, control the PFC circuit to operate the PFC circuit in a standby mode,
• identify an on-off frequency of the switch based on a reference current level for limiting a peak current of the inductor in the PFC circuit in the standby mode;
• and
• detect an output voltage of the PFC circuit and, based on the output voltage being less than a threshold output voltage that corresponds to the standby mode, adjust the output voltage to correspond to a reference voltage by applying a signal with the on-off frequency to the switch included in the PFC circuit.