毕业设计：一种开关型稳压电源设计

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1、目录摘要···············································3第1章绪论········································41.1开关电源的发展历史························41.2我国开关电源历程···························51.3开关电源技术发展动向·······················8第2章PWM开关电源的基本原理······················112.1PWM开关电源的组成模块········

2、············112.2PWM开关电源的基本原理····················12第3章设计思想与方案论证·························153.1设计思想·································153.2方案论证··································153.2.1方案选择····························153.2.2方案论证····························19第4章系统设计·············

3、······················224.1技术指标··································224.2输入整流电路和滤波电路设计················224.3变压器····································274.4自激振荡电路组成··························304.5输出整流和滤波电路························304.5.1输出直流电压的形成···················314.5.2半波整流电路·····

4、····················314.5.3 电容滤波·····························344.6稳压电路设计······························344.6.1稳压电路的组成······················354.6.2TL431特性及应用·····················354.6.3稳压过程·····························374.7过电流限制功能设计·························38第5章设计成果·········

5、····························395.1电路原理图································395.2PCB板图···································395.3调试过程···································405.4故障分析与排除·····························41结束语··············································42附录1元件清单·············

6、·························43附录2装配图········································45附录3实物图········································45参考文献·············································46摘要电源是电路设计的基础，设计开关电源必须综合考虑成本、解决方案、尺寸、电源大小与所需输出功率等因素，在使用开关电源的过程中要运用正确的方法并注意安全。这篇文章主要介绍了在开关电源设计与使用过程中的

7、一些体会，即如何选用设计所需元件，实现开关电源功能过程中的几点注意及使用开关电源中的注意事项，并通过实例进行说明。关键字开关电源，自激振荡，稳压SummaryThepowersupplyisthefoundationoftheelectriccircuitdesign.Theswitchpowersupplyshouldbeconsideredthecost,solution,size,value,powerandsooninthedesign.Thisarticlemainlyintroducestheexperienceofthedes

8、ignanduseoftheswitchpowersupply,thatishowtochoosethecomponentthatdesignneed,andattentions