高频节能开关电源设计  

Design of High Frequency Energy-saving Switching Power Supply

作　　者：张飞云[1] 张鹏 杨灿 ZHANG Feiyun;ZHANG Peng;YANG Can(School of Electrical Engineering&Mechano-Electronic Engineering,Xuchang University,Xuchang 461000,China;Nanzhao County Electric Power Bureau,Nanzhao 474650,China;Henan Camel Medical Technology Co.Ltd,Xinxiang 453400,China)

机构地区：[1]许昌学院电气(机电)工程学院,河南许昌461000 [2]南召电业局,河南南召474650 [3]河南省驼人医疗科技有限公司,河南新乡453400

出　　处：《许昌学院学报》2020年第2期118-122,共5页Journal of Xuchang University

基　　金：河南省高等学校重点科研项目(15A510042)。

摘　　要：根据高频开关电源工作的基本原理,以反激拓扑电路为基本结构,利用输入保护电路,保证开关电源安全工作;利用全波不可控整流电路,实现对交流电到直流电的变换;以UC3842作为核心的PWM控制电路,完成功率变换的功能;利用EMI滤波电路,解决电磁兼容、电磁干扰等问题;利用以TL431为基础的负反馈闭环控制电路,实现12 V稳定输出,最终实现高效、节能、环保、安全的开关电源设计.The switching power supply design introduced in this article is based on the basic principle of high-frequency power supply.The circuit with flyback topology is used as the basic circuit structure.The full-wave uncontrollable rectifier circuit is used to realize the conversion from alternating current to direct current.UC3842 is used as the core of PWM control circuit to complete the function of power conversion.The filter circuit is used to solve problems such as electromagnetic compatibility and electromagnetic interference.The TL431-based negative feedback closed-loop control circuit is used to realize the 12 V regulated output of the high-frequency energy-saving switching power supply to achieve the design goal of the high-frequency energy-saving switching power supply.

关 键 词：UC3842 开关电源 PWM控制 反激拓扑结构 

分 类 号：TP391.41[自动化与计算机技术—计算机应用技术]