OVERCURRENT PROTECTION DEVICE FOR A POWER SUPPLY DEVICE

An overcurrent protection device of a power supply apparatus is provided. The overcurrent protection device includes an inductor, a first switch, a second switch, a feedback controller, a pulse width modulation (PWM) controller, and an overcurrent protection controller. The inductor may be connected to an input terminal of a power supply device that inputs current from a power source. The first switch may be connected between the output terminal of the inductor and ground. The second switch may be connected between the output terminal of the inductor and the output terminal of the power supply device. The feedback controller may compare an output voltage of the power supply device with an output voltage target value, and generate a control voltage based on a result of the comparison of the output voltage with the output voltage target value. The PWM controller may control on and off of the first switch and the second switch, and control a peak current of the first switch based on the control voltage. The over