Device and method for protecting a CPU from being damaged by an overrating voltage or overrating current

摘要

A device and method for protecting a CPU from being damaged by overrating voltage or overrating current. The means for protecting the CPU is to detect the working voltage and working current provided to the CPU, to compare the working voltage and working current with the voltage and current settings, and to determine whether overrating voltage or/and overrating current is generated. If overrating voltage or/and overrating current occurs, a control signal is sent to the soft switch of an ATX power supply, a first switch, or a second switch in the device in order to cut the supplying route of the power supply. Therefore, the CPU is not broken down due to overrating voltage or/and overrating current. Detection means for detecting the breakdown of a switch-type stabilizing controller of the power supply to the CPU are also provided.