基于SG3525的方波500W逆变电源设计论文.docx

毕业设计（论文） 题 目： 基于SG3525的3KW逆变电源设计 PAGE \* MERGEFORMAT15 基于SG3525的3KW逆变电源设计 摘要 对开关电源常用的电力电子器件做了简单介绍，重点介绍了SG3525芯片的内部结构及其特性和工作原理，介绍了开关管MOSFET的工作原理和开关动态特性等。设计了一款基于SG3525的推挽式DC-DC开关电源，提供高达2000V的直流电压。给出了系统的电路设计方法以及主要电路模块的原理分析和参数计算，特别是对开关电源高频变压器的设计给出了详尽的原理分析和各个参数的详细计算。该电路采用两组相同的推挽变换电路且输出串联的设计，对变压器和整流滤波电路进行了有效的分压，降低了对各种电力电子器件参数的要求，提高了系统的可靠性。实验结果表明，该电源具有效率高，输出有效电压满足设计要求且运行可靠等优点。 关键词：开关电源； SG3525；DC-DC；高频变压器 Abstract A brief introduction?on?the?switching power supply?commonly used?power electronic devices, introduced with emphasis on the SG3525chips internal structure and its characteristics and working principle, introduces the working principle of switching tube MOSFET and switch dynamic characteristics. Design of a SG3525 based on the push-pull type DC-DC switch power supply, providing high up to 2000V DC voltage. Presents the system design method of the circuit and main circuit module principle analysis and calculation of the parameters, especially for high frequency switching power supply transformer design are given in detail the principle analysis and parameters calculation. The circuit adopts two groups of identical push-pull converter circuit and output series design, the transformer and a rectifying filter circuit carried out effective pressure, reduced to the various power electronic device parameter requirements, improve the reliability of the system. The experimental results show that, the power supply has the advantages of high efficiency, output voltage meet the design requirements and the reliable operation and so on.. Key words: Switching Power Supply ;SG3525; DC-DC; High-frequency Transformer 目录 TOC \o 1-3 \h \z \u HYPERLINK \l _Toc325920910 一、绪论 PAGEREF _Toc325920910 \h 3 HYPERLINK \l _Toc325920911 1.1 选题的目的和意义 PAGEREF _Toc325920911 \h 3 HYPERLINK \l _Toc325920912 1.2 国内外研究和发展综述 PAGEREF _Toc325920912 \h 3 HYPERLINK \l _Toc325920913 1.3 本文的主要工作 PAGEREF _Toc325920913 \h 3 HYPERLINK \l _Toc325920914 二、电路设计及原理分析