Overcurrent protection circuit and motherboard having same

A motherboard, comprising an overcurrent protection circuit and a complex programmable logic device connected to the overcurrent protection circuit, the overcurrent protection circuit comprising an input terminal, an output terminal, a first resistor, a second resistor, a current source and a comparator, the first resistor, the second resistor and the current source connected in series in that order between the input terminal and ground, a first input pin of the comparator connected to a first node between the second resistor and the current source, a second input pin of the comparator connected to the input terminal, an output pin of the comparator connected to the output terminal, when current input through the input terminal is greater than a predetermined value, the overcurrent protection circuit outputs a signal indicative of the current being greater than the predetermined value through the output terminal, the complex programmable logic device configured to shut down an enable signal of providing voltage to an electronic component according to the signal indicative of the current being greater than the predetermined value.