LOW VOLTAGE APPARATUS ›› 2025, Vol. 0 ›› Issue (2): 53-57.doi: 10.16628/j.cnki.2095-8188.2025.02.009

• Electrical Design & Discussion • Previous Articles     Next Articles

Design of Single-Ended Flyback Synchronous Rectification Anti-Reverse Current Drive Circuit

JIANG Dongyi, YANG Song, ZHANG Chunya   

  1. The 24th Research Institute of China Electronics Technology Group Corporation, Chongqing 400060, China
  • Received:2024-09-27 Online:2025-02-28 Published:2025-03-31

Abstract:

By analyzing the causes of the reverse current in the single-ended flyback synchronous rectification circuit,a design scheme for the externally-driven synchronous rectification drive circuit is proposed.The feasibility of the proposed scheme is verified by the theoretical calculations and simulation analyses.A prototype of the secondary power supply module with the output of 5 V/12 A is built.The results of the experimental measurements show that the prototype can achieve the quantitative control of the reverse current.

Key words: single-ended flyback, synchronous rectification, reverse current, power module

CLC Number: