Power device protection apparatus

A power device protection apparatus comprising:

• a comparator that is connected to a power device to determine whether an overcurrent occurs in the power device;
• and
• a control unit that controls the comparator to vary, in software, an overcurrent reference value for determining whether the overcurrent occurs,
• wherein the control unit receives temperature information of the power device,
• varies the overcurrent reference value based on the temperature information, and varies the overcurrent reference value according to the temperature information based on a characteristic of the power device,
• wherein:
• the control unit, when the characteristic of the power device is to operate with a positive temperature coefficient or a negative temperature coefficient according to a current flowing through the power device, varies the overcurrent reference value according to the temperature information based on the current flowing through the power device;
• and
• the control unit, when the power device has the negative temperature coefficient or the positive temperature coefficient based on a specific current, varies the overcurrent reference value according to the negative temperature coefficient or the positive temperature coefficient based on whether the current flowing through the power device exceeds the specific current.