Patent ID: 8053924

Claim:
An improved structure of serial synchronous chopper, mainly comprising: an external synchronous rectifier power supply unit, an internal synchronous rectifier power supply unit, a synchronous voltage-stabilized control unit, an integrated driving circuit unit, a synchronous load feedback control unit, and a synchronous integrated chopping unit; and characterized by: the external synchronous rectifier power supply unit having one side connected with an input end of a live wire of a power supply and having another side equipped with a DC voltage-stabilized output end; the internal synchronous rectifier power supply unit having one side in connection with the input end of the live wire of the power supply and having another side equipped with a first branch in connection with the synchronous load feedback control unit and the synchronous voltage-stabilized control unit and a second branch in connection with the integrated driving circuit unit, the synchronous integrated chopping unit and another side of the synchronous load feedback control unit; the integrated driving circuit unit having one side connected with the second branch of the internal synchronous rectifier power supply unit and the synchronous integrated chopping unit to control the synchronous integrated chopping unit, and having another side connected with the synchronous voltage-stabilized control unit to be controlled thereby; and the synchronous integrated chopping unit connected with and controlled by the integrated driving circuit unit, having one side connected to the input end of the live wire of the power supply and another side equipped with an output end of the live wire of the power supply, and having a synchronous sampling terminal for chopping to control the synchronous load feedback control unit and the synchronous voltage-stabilized control unit; whereby the improved structure of serial synchronous chopper is serially connected to the live wire of the power supply to periodically perform synchronous chopping so as to provide a synchronous DC voltage-stabilized output as a fundamental power supply to a connected external circuit.