›› 2011, Vol. 24 ›› Issue (6): 118-.

• 论文 • 上一篇    下一篇

基于SG3525的开关电源设计

王晓锋,王京梅,孙俊,李莉   

  1. (电子科技大学 微电子与固体电子学院,四川 成都 610054)
  • 出版日期:2011-06-15 发布日期:2011-06-14
  • 作者简介:王晓锋(1986—),男,硕士研究生。研究方向:电力电子技术。王京梅(1968—),女,硕士,副教授。研究方向:电力电子技术与元器件。

Design of a Switching Power Supply Based on Sg3525

 WANG Xiaofeng, WANG Jingmei, SUN Jun, LI Li   

  1. (School of Microelectronics and Solid-State Electronics,University of Electronic Science and Technology of China,Chengdu 610054,China)
  • Online:2011-06-15 Published:2011-06-14

摘要:

介绍了SG3525芯片的内部结构,分析了其特性和工作原理,设计了一款基于SG3525可调占空比的推挽式DC/DC开关电源,给出了系统的电路设计方法以及主要单元电路的参数计算,并对该电源进行了性能测试。实验表明,该电源具有效率高、输出电压稳定等优点。

关键词: SG3525;高频变压器;PWM;开关电源

Abstract:

The internal structure of SG3525 chip is introduced,and its characteristics and working principle are analyzed.An adjustable duty cycle push-pull DC / DC switching power supply based on SG3525 is designed,and the design method and practical circuit are described.Finally,the tests of the power supply performance are given.Experiments show that the power supply have the advantages of high efficiency,stable output voltage and so on.

Key words: SG3525;high frequency transformer;PWM;switching power supply

中图分类号: 

  • TN86