Synchronous rectifier, use of such a synchronous rectifier in a switching power supply, and switching power supply

摘要

Synchronous rectifier (1), which rectifies an AC voltage signal as an input signal and / or forwards a DC voltage signal as an input signal for use as an output signal, at least comprising: - a rectification unit (5) consisting of at least one controllable switching element (12); - A smoothing unit (7), which is connected downstream of the rectification unit (5) and smoothes the signal rectified or forwarded by the rectification unit (5) and makes it available for use as an output signal (Ua); - A control logic (2, 3, 4) which controls the rectification unit (5) on the basis of the input signal and the output signal (Ua) originating from the smoothing unit (7).