小型开关电源设计稿与制作毕业设计稿专业论文.docVIP

小型开关电源设计 ABSTRACT This paper mostly describes the whole design and debugging of the minitype switched voltage regulator power, which is composed of six parts. The second part wrote about the element and the third part wrote about the design step of minitipe switched power. The model includes import loop, output loop, feedback loop, control loop and the design of transformer. The latter includes hardware debugging and experiment results analyzing. After experimentation, I think out the relations among output voltage, import voltage, duty ratio and switched frequency and also the relations of import current, transformer coil ratio and the output current. In addition, I put forward relevant methods by myself for many problems which are met with during the course of the experimentation. Keywords: switched power 、regulated power、transformer 摘要 本设计主要描述小型开关电源的整个设计和调试过程，本文包括六个主要部分，第一部分介绍开关电源的发展状况。第二部分主要介绍其工作原理，第三部分介绍设计步骤。主电路包括输入、输出和反馈控制部分。最后一部分主要是硬件部分的调试。调试部分包括电路的焊接和调试，在调试过程中发现的问题的解决。 关键词：开关电源、变压器、开关管 目 录 第一章 绪论 ---------------------------------------------------------------2 1－1 概述 ----------------------------------------------------------------------------2 1－2 开关电源的新技术 ----------------------------------------------------------4 1－3 开关电源的基本构成 -------------------------------------------------------9 1－4 开关电源的稳定度 ----------------------------------------------------------9 1－5 开关电源的分类 ------------------------------------------------------------11 第二章 小型开关电源原理 --------------------------------------------14 2－1 RCC变换器的电路结构 --------------------------------------------------14 2－2 简单的RCC方式开关电源 ----------------------------------------------18 第三章 开关电源电路设计 --------------------------------------------24 第四章 性能改善 --------------