基于CMOS的开关电容DC-DC降压变换器  

Switched- Capacitor DC-DC Buck Converters Based on CMOS Technology

作　　者：张立森[1] 王立志[1] 邵一丹[1] 

机构地区：[1]空军工程大学理学院,陕西西安710051

出　　处：《微计算机信息》2007年第20期260-261,312,共3页Control & Automation

基　　金：国家自然科学基金资助项目(No.50177027)

摘　　要：在标准CMOS工艺的基础上,分析了基本串并电容组合开关电容DC-DC降压变换器的工作原理和集成方法。采用两个单端开关电容变换器反相并联联结,降低了输出电压波纹。利用电路内部节点电压驱动MOS开关管,避免了每个开关管都必须单独驱动。用SPICE软件对电路进行了瞬态分析,给出了分析结果。Working principle and integrating method of switched-capacitor DC-DC buck converters constructed by basic series-parallel capacitors was analyzed based on standard CMOS technology. Output voltage ripple was reduced by connecting two identical but opposite-phase SC converters in parallel. MOS transistors were driven by internal nodes voltage for avoiding the need for separate gate drivers. The circuit was analyzed transiently by SPICE and the results were given.

关 键 词：DC-DC变换器 CMOS开关电容网络 反相并联结构 

分 类 号：TM464[电气工程—电器]