一种新颖的同步整流有源箝位正激变换器电路  

A Novel Circuit of the Active Clamp Forward Converter with Secondary Side Synchronous Rectification

作　　者：刘克承[1] 李斌[1] 

机构地区：[1]兰州空间技术物理研究所,甘肃兰州730000

出　　处：《电力电子技术》2011年第4期30-32,共3页Power Electronics

摘　　要：从宇航应用角度出发,在充分调研国内外同步整流技术以及有源箝位技术发展现状基础上,提出一种应用普通PWM控制以及MOSFET驱动芯片实现次级同步整流的有源箝位正激变换器的电路设计。论述了PWM的选取与控制模式的设计,对驱动信号和箝位电容的进行设计,最后给出了实验波形,证明了设计的可行性。This paper proposes an active clamp forward converter circuit of secondary side synchronous rectification based on aerospace applications,using an ordinary PWM chip and a MOSFET driver chip,from the perspective of re-search in many synchronous rectification technology and active clamp technology development status at home and abroad.The choice of PWM and the mode of control are introduced,the calculation of driven signal and clamp capacity is given.Finally,the experimental waveforms are given to prove the feasible of design.

关 键 词：变换器 同步整流 有源箝位 正激 

分 类 号：TM46[电气工程—电器]