高效率PWM DC/DC转换器的设计  

Design of A High-Efficiency PWM DC/DC Converter

作　　者：徐静平[1] 谭亚伟[1] 钟德刚[1] 

机构地区：[1]华中科技大学电子科学与技术系,武汉430074

出　　处：《计算机与数字工程》2007年第9期139-142,共4页Computer & Digital Engineering

基　　金：国家自然科学基金(编号:60376019)资助

摘　　要：采用同步整流技术和轻负载条件下的自动突发模式,设计一种高效率PWMDC/DC转换器.将该转换器用于一个输出电压为3.3V的升压型开关电源系统中,HSPICE仿真结果表明,该转换器在轻、重负载时都具有高的效率,最高可达92.78%。In this paper,a high-efficiency PWM DC/DC Converter is proposed by using synchronous rectification technology and automatic burst mode operation at light loads. This converter has successfully been used for a 3.3 V step-up switching regulator system, and high efficiency at both light and heavy loads is confirmed through HSPICE simulation, with the highest efficiency of 92.78%.

关 键 词：PWM控制 同步整流 自动突发模式 死区时间 

分 类 号：TN709[电子电信—电路与系统]