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1、洛 阳 理 工 学 院毕 业 设 计(论 文) 题目推挽式开关电源的设计 2013 年 5 月 30 日洛阳理工学院毕业设计(论文)I推挽式直流电源开关的设计摘 要电源是实现电能变换和功率传递的主要设备。在信息时代,农业、能源、交通运输、信息、国防、教育等领域的迅猛发展,对电源产业提出了更多、更高的要求、如节能、节电、节材、缩体、减重、环保、可靠、安全等。这就迫使电源工作者在电源研发过程中不断探索,寻求各种相关技术,做出最好的电源产品,以满足各行各业的要求。开关电源是一种新型电源设备,较之于传统的线性电源,其技术含量高,耗能低,使用方便,并取得了较好的经济效益。开关电源具有功耗小、效率高、稳压
2、范围宽、体积小、等突出优点,在通信设备、数控装置、仪器仪表、影音设备、家用电器等电子电路中得到了广泛应用。本文首先介绍开关电源的基本原理,而后介绍广泛应用于开关电源的双端输出驱动器 UC3524,并以驱动器 UC3524 为基础,通过打印机电源电路,讲述推挽式开关电源工作原理。关键词:电能变换,开关电源,UC3524,推挽式开关电源洛阳理工学院毕业设计(论文)IIDesign of a push-pull DC switching power supplyABSTRACTPower is to achieve power conversion and power transmission ma
3、jor equipment. In the information age, the rapid development of agriculture, energy, transportation, information, national defense, education and other fields, for the power industry made more, higher requirements, such as energy saving, energy saving, material saving, reduced body weight loss, envi
4、ronmental protection, reliable, safety etc. This has forced the power workers continue to explore in the power development process, to seek a variety of related technology, the power to make the best products, to meet the requirements of all walks of life. Switching power supply is a new type of pow
5、er supply equipment, compared to traditional linear power supply, high technological content, low energy consumption, easy to use, and has achieved good economic benefit. Switching power supply with low power consumption, high efficiency, wide voltage range, small size, and other advantages, is wide
6、ly used in communication equipment, numerical control equipment, instrumentation, audio and video equipment, household appliances and other electronic circuits. This paper first introduces the basic principle of switching power supply, then introduce dual output driver UC3524 is widely used in switc
7、hing power supply, and to drive UC3524 as the foundation, through the printer power supply circuit, on the working principle of push-pull switching power supply.KEY WORDS: transformation of electrical energy, transformation of electrical energy,UC3524, transformation of electrical energy洛阳理工学院毕业设计(论
8、文)III目录前 言 .1第 1 章 绪论 .21.1 开关电源的发展历程 .21.2 开关电源的分类 .31.2.1 按电路的输出稳压控制方式分类 .31.2.2 按开关电源的触发方式分类 .31.2.3 按输入与输出是否隔离分类 .31.2.4 按功率开关管关断和开通工作条件分类 .41.3 开关电源的主要技术指标 .41.4 开关电源电路组成 .51.5 电源电路的主要特点 .51.6 开关电源的特点 .6第 2 章 开关器件 .72.1 开关器件的特征 .72.2 开关器件的分类 .72.3 常见开关器件介绍 .8第 3 章 开关电源的基本原理 .103.1 开关电源拓扑结构 .103
9、.1.1 非隔离式开关电源拓扑结构 .103.1.2 隔离式电源开关拓扑结构 .123.2 推挽式开关变换电路基本原理 .143.3 各种不同开关变换电路的比较 .16第 4 章 UC3524 介绍 .174.1 UC3524 介绍 .174.2 UC3524 的内部结构及其原理 .17第 5 章 UC3524 组成的高压开关电源分析与设计 .205.1 基于 UC3524 的高压开关电源原理分析 .205.2 变压器绕制步骤 .22洛阳理工学院毕业设计(论文)IV5.3 开关电源的电磁兼容性问题 .235.3.1 电磁兼容性 .235.3.2 电磁兼容问题要素 .235.3.3 解决开关电源的电磁兼容性 .24结 论 .25谢 辞 .