摘要
以ATmega8L为控制核心的直流稳压电源系统包括电源控制器和电压输出控制器。电源控制器主要完成对输出电压的测量、比较、反馈控制、显示信号输出、读取键盘信号,存储用户设定参数等功能;电压输出控制部分以PWM型DC/DC专用驱动芯片LT1680CN为核心,通过电阻反馈网络将输出电压以一定比例反馈至VFB端并在芯片内部与基准电压进行比较后控制PWM发生器的占空比,以实现输出电压的控制。
The DC voltage regulated power supply system with ATmega8L as its control core consists of power controller and voltage output controller. The main functions of its power controller include measurement, comparison and feedback control of output voltage, display, keyboard signal readout and storage of user-configured parameters. PWM DC-DC driver, LT1680CN, acts as the voltage output controller. The output voltage is sent to VBF port of the driver by the resistor feedback network. Then the duty of the PWM generator has been changed to control the output voltage.
出处
《兵工自动化》
2008年第12期55-56,60,共3页
Ordnance Industry Automation
作者简介
彭仁明（1969-），四川人，男，副教授，从事电子技术应用与自动控制技术研究。
