用于宽输入Buck变换器的高速栅驱动电路  

A High Speed Gate Driver for Wide Voltage Buck Converter

作　　者：杨秉中 罗萍[1,2] 刘俊宏 赵忠 曹麒 刘凡[1,3] YANG Bingzhong;LUO Ping;LIU Junhong;ZHAO Zhong;CAO Qi;LIU Fan(State Key Lab.of Elec.Thin Films and Integr.Dev.,Univ.of Elec.Sci.and Technol.of China,Chengdu 610054,P.R.China;Chongqing Institute of Microelec.Industry Technol.,Univ.of Elec.Sci.and Technol.of China,Chongqing 401331,P.R.China;The 24th Research Institute of China Electronics TechnologyGroup Corporation,Chongqing 40o060,P.R.China)

机构地区：[1]电子科技大学电子薄膜与集成器件国家重点实验室,成都610054 [2]电子科技大学重庆微电子产业技术研究院,重庆401331 [3]中国电子科技集团公司第二十四研究所,重庆400060

出　　处：《微电子学》2023年第2期204-208,共5页Microelectronics

摘　　要：设计了一种混合型的栅极驱动电路,用于宽范围电压输入Buck变换器的高低侧功率管驱动。将闭环的线性稳压器与短脉冲电流源结合,在有效缩短功率管栅极充电时间的同时确保了驱动电压精度。根据典型应用的仿真结果,该结构电路在整个输入电压范围内将功率管开启速度提升了至少41%,提升了电路的最大工作频率。A hybrid driving circuit was designed to drive the high and low side power MOSFETs of a wide range input voltage buck converter.The closed-loop linear voltage regulator was combined with a short pulse current source to effectively shorten the charging time of power MOSFETs and ensure the Vcs accuracy.According to the simulation results of typical applications,the structure circuit increases the power switches speed by at least 41%in the whole input voltage range,so improving the maximum working frequency of the circuit.

关 键 词：BUCK变换器 栅极驱动电路 线性稳压器 

分 类 号：TN433[电子电信—微电子学与固体电子学] TM46[电气工程—电器]