同步整流buck变换器低功耗驱动电路设计  

Design of Low-Power driver circuit of Synchronous Rectifier Buck Converter

作　　者：高庆[1] 孙金中[1] 郭锐[1] 

机构地区：[1]中国电子科技集团公司第三十八研究所,安徽合肥230088

出　　处：《中国集成电路》2016年第5期38-42,共5页China lntegrated Circuit

摘　　要：本文介绍了一种适用于同步整流buck变换器的驱动电路,采用交错延迟的方法来控制功率管和驱动管的导通和关断,解决同步整流驱动死区问题。采用ST28nm CMOS工艺,仿真结果表明该驱动电路能够减少芯片的死区损耗和驱动损耗,提高电源转换效率。This paper presents a driver circuit for synchronous rectifier buck converter, the driver circuit adopts the method of gate driving signals staggered delay to control turn on and turn off of power MOSFETS and driver MOSFETS, solves the problem of dead zone in synchronous rectifier. Implemented in ST28 nm CMOS process, the simulation results show that the driver circuit can reduce the dead zone loss and driver loss, and improve the conversion efficiency of power.

关 键 词：BUCK变换器 驱动电路 死区时间 

分 类 号：TM46[电气工程—电器]