基于非隔离型高效率开关电源的研究与实用设计  

Study and Practical Design on the Non-isolated High-efficiency Switch-mode Power Supply

作　　者：李文豪[1] 杜培德[1] 尹华[1] 

机构地区：[1]中国电子科技集团公司第二十四研究所,重庆400060

出　　处：《电源世界》2013年第12期30-35,共6页The World of Power Supply

摘　　要：伴随着电子系统功能多元化、结构小型化的发展趋势,要求开关电源在满足体积的条件下,能够实现多路输出以满足系统使用要求。本文介绍了一种基于TI公司的TPS40055PWP控制器及LMZ14203电源模块,开发的多路非隔离DC/DC变换器工作原理及设计方法,重点阐述了该型变换器在研制过程中的技术难点及解决办法。采用该方案设计了一个实验电路。仿真和实验电路测试结果表明,分析设计满足要求。With the development trend of the electronic system based on diversified functions, and the more compact structure, it is necessary that tile Switch Mode Power Supply achieve multi-channel output to meet the employment under tile required volume. According to this analysis, our paper gives a introduction about the working principle and the design method of the non-isolated DC/ DC converter inchldes multi-channel based on TPS40055PWP controller and LMZ14203 power modules both from TI, focusing on the technical difficulties and the corresponding solutions in the development process. Finally a demo board was designed based on the topology. Both simulation and test results showed that the circuit met design specifications.

关 键 词：高效率 非隔离型 正负电源输出 多路 DC DC 

分 类 号：TN86[电子电信—信息与通信工程]