摘要
随着电力电子技术的飞速发展,各类软开关技术应运而生。文章基于电流控制型芯片UCC2897应用有源箝位技术设计出了一种多路输出的同步整流开关电源。该电源具有过流保护,过压和欠压保护。文中详细介绍了UCC2897的功能和电路设计过程,并采用变压器堆叠绕法和输出比例取样来提高调整率。
With the rapid development of power electronics technology, various types of soft-switch technology emerged. Based on current control mode UCC2897 active-clamp technique applied to design a multiple output synchronous rectification switching mode power supply with overcurrent protection, overvoltage and undervoltage protection. This paper describes the UCC2897 features and circuit design processes. Stacked around the law and the use of transformer output sampling ratio to improve regulation.
出处
《通信电源技术》
2010年第5期13-15,19,共4页
Telecom Power Technology
关键词
有源箝位
交叠绕组
同步整流
多路输出
active clamp
overlapping winding
synchronous rectification
multi-output
