大电流低电压开关电源的设计  

Design of the switch power with big electric current and low electric voltage

作　　者：周德泰[1] 杨志民[1] 郭海涛 马胜前[1] 

机构地区：[1]西北师范大学

出　　处：《电测与仪表》2008年第6期43-45,共3页Electrical Measurement & Instrumentation

基　　金：甘肃省科技攻关资助项目(2GS047-A52-002-07)

摘　　要：提出了大电流低电压的大功率开关电源的设计方案,研制了整流滤波电路,分析确定了DC/DC变换模块作为主电路功率元件,并设计了PWM控制电路、软启动及过压过流保护电路。实验测试证明输出稳定,可对矿灯充电架等多种设备进行充电,有着广泛的应用前景。This paper presents the design scheme for the charging switch power which has the characteristics of low voltage,big current and large power,and the rectifier circuit is developed.By analyzing switch power features,the big power DC/DC transformation model is chosen as power cell of main electric circuit.The PWM control circuit,soft-startup circuit and protection circuit for power supply are designed.The experimental results show that the output of the switch power is stable.The switch power can be used to c...

关 键 词：开关电源 大功率 脉宽调制 变换器 功率管 

分 类 号：TN86[电子电信—信息与通信工程]