多路输出500W LLC谐振变换器的设计  

Design of 500 W Multi-output LLC Resonant Converter

作　　者：李臣松[1] 邓翔[1] 龚春英[1] 

机构地区：[1]南京航空航天大学,江苏南京210016

出　　处：《电力电子技术》2011年第10期18-20,共3页Power Electronics

摘　　要：LLC半桥谐振变换器以其高效率、高功率密度等优点成为近年业内研究的热门拓扑。这里设计了基于LLC谐振变换器的500 W LLC多路输出DC/DC变换器。在分析了LLC软开关特性后,介绍了一种基于频域分析的参数设计方法。针对多路输出电源系统,采用了一种非对称结构的LLC谐振型变换器,并介绍了其实现电路。最后在500 W实验样机上进行实验,证明了分析的可行性,同时该电路结构简单,参数设计灵活,能够很好地满足输出设计要求。LLC half-bridge resonant converter is studied popular due to much of advantages such as high efficiency and high power density.A 500 W multi-output DC/DC converter is designed on LLC resonant converter.This article firstly describes the soft-switching characteristic of the LI^C resonant converter,then introduces a parameter design strategy based on frequency domain.This paper adopts multi-output LLC resonant topologies with asymmetrical structures to multi-output power supply systems and the circuit is achieved.At last,the experiment is given.The simple structure, the flexible parameters design and the resonant converter meet the design requirement.

关 键 词：变换器 多路输出 参数设计 

分 类 号：TM46[电气工程—电器]