同步整流技术及其在DC/DC变换器中的应用  

Technology of Synchronous Rectification and Its Application in DC/DC Converter

作　　者：沙占友 王彦朋[1] 于鹏[1] 

机构地区：[1]河北科技大学,河北石家庄050054

出　　处：《电源技术应用》2004年第12期723-727,共5页Power Supply Technologles and Applications

摘　　要：同步整流技术是采用通态电阻极低的功率 MOSFET 来取代整流二极管,因此能大大降低整流器的损耗,提高 DC/DC 变换器的效率,满足低压、大电流整流的需要。首先介绍了同步整流的基本原理,然后重点阐述同步整流式 DC/DC 电源变换器的设计。The technology of synchronous rectification is to replace the rectifying diode with powder MOSFET that has very low turn-on resistance,so it can decrease the dissipation of rectifier greatly,improve the efficiency of DC/DC converter and meet the needs of low-voltage,large current rectification.The basic principle of synchronous rectification is introduced at first,and then the design of synchrouons rectification DC/DC converter is represent in detail.

关 键 词：同步整流 磁复位 箝位电路 DC/DC 变换器 

分 类 号：TM46[电气工程—电器]