基于TL43的反激式开关电源设计学士.doc
《基于TL43的反激式开关电源设计学士.doc》由会员分享,可在线阅读,更多相关《基于TL43的反激式开关电源设计学士.doc(29页珍藏版)》请在启牛文库网上搜索。
1、淮北师范大学2014届学士毕业论文 基于TL431的反激式开关电源设计基于TL431的反激式开关电源设计张明志淮北师范大学物理与电子信息学院 235000摘要 本设计是基于TL431设计反馈电路的一种反激式开关电源。反激式开关电源的优点是其电路简单、体积小便于携带、输出电压稳定性高。 随着信息技术的迅速发展,反激式开关电源适用于小功率场合且易于推广使用。本电源设计主要讲述了开关电源的基础知识和反激式开关电源的基本原理设计、集成芯片的使用和外围电阻的确定、由TL431和PC817构成的反馈电路及课题研究得出的结果。文讲述了利用反激式开关电源的基本原理设计出了供非常规用电设备使用的非常规开关电源,
2、课题研究结果得出它的输出电压稳定性高,且输出电流大,具有实用性。同时,我们还可以根据本论文的设计原理通过改变占空比和芯片外围电阻值制作不同输出的开关电源(输出功率要在100W以内),供应日常生活的小功率电器使用。关键词 开关电源;反激式;TL431;UC3842;反馈电路The flyback type switch power supply design based on TL431Zhang Mingzhi School of Physics and Electronic Information, Huai Bei Normal University, Anhui Huaibei, 235
3、000Abstract A high precise and reliable single-ended flyback switching power supply was designed and made in this paper,whose current controller consisted of alinear photoelectric couple. The closed-loop feedback of TL431 was used to realize switching power supplys stable equilibrium.Compared with g
4、eneral switching power supply, the powers had been with the advantages of high switch frequency,small switch loss, high reliability and so on.With the rapid development of Information Technology,the flyback switching power supply was used widely in low power application.The design and application of
5、 a new single-output single flyback switching power supply was proposed in this paper.The paper had been analyzed flyback switching power supply of their working principle and the basic knowledge ,and introduced a few major chip functions and the use of the pin and the research results.Of course,the
6、 realization of the feedback circuit based on TL431 and PC817 was presented in the paper.An unconventional-output and single-ended flyback switching power supply was designed and made in this paper,whose the basic principle consists of the flyback type switch power supply.The article had been introd
7、uced an unconventional flyback power supply.The flyback power supply had been with the advantage of output current large and stable voltage.Concurrently, we can also use the small power electrical appliances in the daily life,which we will make according to the principle of the flyback switching pow
- 配套讲稿:
如PPT文件的首页显示word图标,表示该PPT已包含配套word讲稿。双击word图标可打开word文档。
- 特殊限制:
部分文档作品中含有的国旗、国徽等图片,仅作为作品整体效果示例展示,禁止商用。设计者仅对作品中独创性部分享有著作权。
- 关 键 词:
- 基于 TL43 反激式 开关电源 设计 学士