摘要
基于AT89S52开关稳压电源主要以集成脉宽调制芯片UC3842、MAX4080及相关外围电路组成。单片机控制电源系统具有"+"和"-"步进功能,步进幅度为1V。AT89S52控制继电器电路实现电路过流保护功能,能实时显示输出电压和电流。经过实验测试系统具有较高的电压调整率和负载调整率,并具有很高的效率。
A switch power supply is designed in this paper. The system consists of integrated PWM chip UC3842, MAX4080 and some other peripheral circuits. The switch power supply is controlled by MCU AT89S52 and has the function of ＇＋＇ and ＇-＇ 1V stepping range. The system can accomplish over current protection by AT89S52 and relay. At the same time, the output voltage and current can be displayed at the real time. Experiments show the designed circuit has a higher voltage regulation, load regulation and higher efficiency.
出处
《电子技术（上海）》
2009年第6期8-10,共3页
Electronic Technology
基金
江苏省高校自然科学研究计划项目批准文号:08KJB140010
