基于DSC控制的移相全桥DC/DC变换器  

DSC based on Phase-Shift-Full-Bridge DC/DC Converter

作　　者：陈新[1] Charlie WU WHut chings 

机构地区：[1]南京航空航天大学,江苏南京210016 [2]DSP Operation,8/16 Bit Products Division,Freescale Semiconductor Inc.

出　　处：《电力电子技术》2006年第5期38-41,共4页Power Electronics

摘　　要：数字控制由于高集成度带来的低成本、设计沿继性、控制灵活等优点而应用逐渐广泛,电力电子应用逐渐朝着高频化方向发展,这也对高频开关电源的数字控制提出了要求。利用Freescale新型号数字信号控制器(DigitalSingnalController,DSC)MC56F8323的高性能特性,完成了基于DSC的带同步整流的高频软开关移相全桥变换器的数字控制,描述了DSC产生软件移相控制策略,并给出了详细的数字控制系统设计和软件结构设计,最后用一台500W实验样机验证了数字控制所带来的优良的系统性能。A full digitized Phase Shift Full Bridge DC/DC converter controlled by software running on a Digital Signal Controller （DSC） has many advantages over mixed analog and processor controlled implementations.The advantages include programmability, adaptability, component count reduction, design reusability, process independence, advanced calibration ability and better performance.Based on the Freescale new DSC chip-MC56F8323,a digital high frequency DC/DC converter is implemented, the system arithmetic is presented, and software design is given in detail.At last a 500 Watt prototype is built to verify the favorable performance resulted from digital control.

关 键 词：变换器 移相全桥 数字控制/数字信号控制器 数字信号处理器 

分 类 号：TM86[电气工程—高电压与绝缘技术] TP273[自动化与计算机技术—检测技术与自动化装置]