Electronic apparatus and control method thereof

A control method of an electronic apparatus including a power factor correction (PFC) circuit and a control circuit configured to control an operation of the PFC circuit, the control method comprising:

• identically applying a switch on/off signal to a first switch and a second switch;
• and
• selectively applying a switch on/off signal to either a third switch or a fourth switch based on a magnitude of an input voltage input through an AC voltage part,
• wherein the PFC circuit includes:
• a first inductor part including a first inductor connected to one end of the AC voltage part and the first switch connected to the first inductor in series;
• a second inductor part including a second inductor connected to another end of the AC voltage part and the second switch connected to the second inductor in series;
• an output part including an output capacitor and a sensing resistor, the output part being connected to the first inductor part and the second inductor part, and the output capacitor and the sensing resistor being connected to each other in series;
• and
• a switching part including the third switch connected to the one end of the AC voltage part and the fourth switch connected to the another end of the AC voltage part.

A control method for controlling an operation of an electronic apparatus including a power factor correction circuit, the control method comprising:

• applying identical signals to switch on or switch off a first switch and a second switch;
• and
• based on a magnitude of an input voltage input through an AC voltage part, selectively applying a signal to switch off a third switch and a signal to switch on a fourth switch or selectively applying a signal to switch on the third switch and a signal to switch off the fourth switch;
• wherein the power factor correction circuit includes:
• a first inductor part including a first inductor connected to one end of the AC voltage part and the first switch connected to the first inductor in series;
• a second inductor part including a second inductor connected to another end of the AC voltage part and the second switch connected to the second inductor in series;
• an output part including an output capacitor and a sensing resistor, the output part being connected to the first inductor part and the second inductor part, and the output capacitor and the sensing resistor being connected to each other in series;
• and
• a switching part including the third switch connected to the one end of the AC voltage part and the fourth switch connected to the another end of the AC voltage part.