Power supply device

A power supply device, comprising:

• an input port configured to receive a power supply signal;
• an active-rectifier circuit coupled to the input port;
• a surge-discharge circuit coupled between the input port and the active-rectifier circuit;
• a detection circuit comprising a detection end and an output end, wherein the detection end is coupled to the surge-discharge circuit, the output end outputs an output signal, normally a regular signal, and in response to detecting a surge signal from the surge-discharge circuit at the detection end, the output signal is changed from the regular signal to an activation signal;
• a rectification-control circuit configured to output a control signal;
• a protection-control circuit coupled to the output end of the detection circuit and the rectification-control circuit to receive the output signal and the control signal and output an operation signal, wherein in response to the output signal being the regular signal, the protection-control circuit outputs the control signal as the operation signal, and in response to the output signal being the activation signal, the protection-control circuit temporarily interrupts outputting the control signal as the operation signal;
• and
• a drive circuit coupled between the protection-control circuit and the active-rectifier circuit to output a drive signal to the active-rectifier circuit according to the operation signal when the operation signal being the control signal is received, and stop outputting the drive signal when the operation signal being the control signal is not received.