An Effective Method for Suppressing False Turn-On and Ringing in Synchronous Rectification Control

In synchronous rectification applications, ringing turn-on is a common issue that can lead to increased circuit power losses, decreased efficiency, and component damage. To address this problem, this paper presents an effective control method for suppressing ringing turn-on in synchronous rectification. The circuit dynamic performance of this method is excellent, capable of accurately and in real-time detecting the $V_{D S}$ voltage status, thus preventing the mosfet from falsely turning on during circuit oscillation and ringing, thereby enhancing the system reliability.