Circuit protection device and protection method

A protection method applied to a circuit protection device and a power supply module, wherein the circuit protection device comprises a judgment module and a control module, and the judgment module comprises a comparing unit, a feedback unit and a reset unit, the protection method comprising the steps of:

• determining whether a first reference signal is larger than a second reference signal by the comparing unit, wherein the first reference signal represents the output current of the power supply module, and the second reference signal represents the output voltage of the power supply module;
• if the comparing unit determines that the first reference signal is larger than the second reference signal, outputting a high-level judgment signal by the comparing unit;
• outputting a feedback signal from the feedback unit to the comparing unit to allow the comparing unit to continuously output the high-level judgment signal;
• and
• outputting a control signal from the control module to the power supply module according to the high-level judgment signal.