Design of low-power high-frequency digital controlled DC-DC switching power converter

作     者：高艳霞 郭水保 GAO Yan-xia;GUO Shui-bao;LIN-SHI Xue-fang;ALLARD Bruno

作者机构：School of Electromechanical Engineering and Automation Shanghai University Shanghai 200072 P. R. China Lab. AMPERE CNRS UMR 5005 Institut National des Sciences Appliqu e es de Lyon Villeurbanne 69621 France 

出 版 物：《Journal of Shanghai University(English Edition)》 (上海大学学报（英文版）)

年 卷 期：2008年第12卷第5期

页      面：450-456页

学科分类：0810[工学-信息与通信工程] 080805[工学-电工理论与新技术] 0808[工学-电气工程] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0701[理学-数学] 0812[工学-计算机科学与技术（可授工学、理学学位）] 

基　　金：the Power Electronics Science Education Development Program of Delta Environmental & EducationFoundation (Grant No.DERO2007014) the Scientific Service of the Embassy of France in China (Grant No.K06D20) 

主　　题：digital control digital pulse-width modulation (DPWM) limit cycle buck converter 

摘      要：This paper models a low-power high-frequency digitally controlled synchronous rectifier （SR） OUCK converter. The converter is a hybrid system with three operation modes. Digital PID controler is used. Key problems such as quantization resolution of digital pulse-width modulation （DPWM） and steady-state limit cycles of digital control switching model power supply （SMPS） are discussed, with corresponding solutions presented. Simulation of a digital control synchronous buck is performed with a fixed-point algorithm. The results show that the described approach enables high-speed dynamic performance.