This application note provides a primary-side synchronous rectification (SR) trigger solution for dual-forward converter (PFC). The solution employs the FAIRCHILD FAN6210 SR controller, which controls the FAN6206 SR driver to achieve low conduction loss SR, and to reduce the overall power loss of PFC.
This document details the design procedure for a synchronous rectifier (SR) circuit utilizing the FAN6210 primary-side SR controller and the FAN6206 secondary-side SR driver for dual-forward converter applications. It explains how the FAN6210 generates control signals for the FAN6206 to optimize timing and improve light-load efficiency through green-mode operation.