摘要
提出了基于单片机控制的程控开关电源解决方案,给出的主电路采用典型单端反激电路模式,控制电路采用51单片机为核心芯片,结合AD采样解决了控制功率开关管导通与关断信号PWM的控制问题。实现了开关电源输出电压为0.1 V/级的程控调节,其调节范围最大可达额定输出的76%。这种工作方式的建立使开关电源在设计上具有使用器件少、实现方法简单和可靠性高等优点。
Presented in this paper based on single chip program-controlled switching power supply, the main circuit used a typical single-ended flyback circuit model,control circuit adopted a 51 MCU as the core, with AD sampling solve the control power switch turn-on and turn-off signal PWM control issues.This program enables the size of switching power supply output voltage program-controlled adjustment. The adjustment ranged up to 76% of rated output. The establishment of this pattern of work so that switching power supply designd with a simple, less use of the device, and high reliability,
出处
《电子技术应用》
北大核心
2011年第5期78-81,共4页
Application of Electronic Technique
关键词
开关电源
单片机
程控
switching power supply
microcontroller
programmable
