摘要
相对于传统线性稳压电源,开关电源具有效率高、输出功率大、体积小、重量轻、成本低等优点。该文采用脉冲宽度调制技术(PWM)控制开关管的关断,基于电流型PWM调制芯片UC3843设计了一种体积小、电路简单、输出可调、纹波抑制能力强、带有过流保护功能的开关电源,通过Multisim仿真验证了设计的正确性,并制作、调试出符合设计指标的开关电源。
Compared with the traditional linear power supply,switch power supply has the advantages of high efficiency,large output power,small volume,light weight,low cost and so on.In this paper,pulse width modulation(PWM)tech-nique is used to control the switch off.Based on the current mode PWM modulation chip UC3843,a switching power supply with over-current protection is designed,which is small in volume,simple in circuit,adjustable in output,strong in ripple suppression ability,and has the function of over-current protection.The correctness of the design is verified by Multisim simulation,and the switch power supply which conforms to the design index is made and debugged.
作者
路子翔
李开宇
李磊
石玉
胡广亮
LU Zi-xiang;LI Kai-yu;LI Lei;SHI Yu;HU Guang-liang(College of Automation,Nanjing University of Aeronautics and Astronautics,Nanjing 211000,China)
出处
《自动化与仪表》
2019年第6期105-108,共4页
Automation & Instrumentation
基金
国家重点研发计划项目(2017YFF0107304)
国家科技部重大开发专项项目(2016YFB1100205)
关键词
脉宽调制
开关电源
UC3843
pulse width modulation(PWM)
switching power supply
UC3843
