双管准谐振同步整流反激变换器的研究  

Research on Two-Transistor Flyback Converter With Quasi-resonant and Synchronous Rectification

作　　者：宋英杰 余岱玲 刘赟 于雷 丁新平[1] SONG Yingjie;YU Dailing;LIU Yun;YU Lei;DING Xinping(School of College of Information and Engineering,Qingdao University of Technology,QingDao 266520,China)

机构地区：[1]青岛理工大学信息与工程学院,山东青岛266520

出　　处：《电工技术》2018年第18期140-141,159,共3页Electric Engineering

摘　　要：本文设计了一款基于NCP1207和IR11672的双管反激式开关电源,分别实现准谐振技术(QR)和同步整流技术(SR)。详细介绍变压器的设计过程和QR及SR技术的工作原理。通过搭建样机验证原理的准确性,证明引入QR和SR技术的双管反激式开关电源满载运行效率极高,最高效率能达88.3%。In the paper, a 24V/6A two transistor flyback switching power supply combining Quasi resonant technology （QR） based on NCP1207 with Synchronous rectification technology（SR） based on IRl1672 is designed. The design progress of transformer and the working principles of QR and SR are introduced in detail. The experimental prototype set up in laboratory certifies the accuracy of the theory and proves two-transistor flyback switching power supply with QR and SR to be more efficient in full load, with the highest efficiency of 88.30/00.

关 键 词：准谐振技术 同步整流技术 谷底导通 双管反激 

分 类 号：TM46[电气工程—电器]