CONTROL CIRCUIT FOR SUPPRESSING SURGE VOLTAGE AND CURRENT OF POWER SUPPLY, AND POWER SUPPLY

摘要

Disclosed are a control circuit for suppressing a surge voltage and current of a power supply, and a power supply, comprising: a driving circuit (11) for generating a driving signal according to an output voltage, a voltage monitoring circuit (14) for being turned on and outputting an ON signal when a power supply generates a surge voltage, a voltage- and current-limiting circuit (13) and a switch protection circuit (12), wherein when the output voltage of the power supply is normal, the voltage- and current-limiting circuit (13) is turned on, such that an output end of the power supply normally outputs a voltage, and when the power supply generates the surge voltage, the voltage- and current-limiting circuit (13) limits the output voltage and an output current of the power supply so as to suppress the surge voltage and current of the power supply to protect the power supply and a load.