| 摘要 |
An improved structure of serial synchronous chopper mainly includes 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. While operating, the structure is serially connected to a live wire of a power supply to periodically perform synchronous chopping so as to provide a synchronous DC voltage-stabilized output as a fundamental power supply in connection with an external circuit. The structure entirely adopts a linear synchronous integral based design to greatly enhance the chopping efficiency and provide a more stable phase current reference point so that the overload protection response in a high-load operating environment is fast and secure, the loop interference and the power consumption of the chopping element can be simultaneously alleviated, the operating voltage is comparatively stable and the faulty rate is lower.
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