基于51单片机控制的数字可调高效开关稳压电源设计  

Design of Digital Adjustable High-efficiency Switching Steady-voltage Power Supply Based on 51 Micro-controller

作　　者：白林绪[1] 申利飞[1] 王聪[1] 

机构地区：[1]中国矿业大学(北京)机电与信息工程学院信电系,北京100083

出　　处：《电源世界》2010年第9期21-24,60,共5页The World of Power Supply

摘　　要：为研究模拟PWM与数字电路相结合后的优点,本文设计实现了一个由51单片机控制的输出可调的高效开关稳压电源。通过理论分析设计了基于BOOST升压电路的DC-DC变换器、PWM控制芯片及其外围电路、单片机最小系统以及键盘/显示电路。通过仿真和实际电路调试使该电源实现稳压、限流、输出设定和输出值的显示功能。结果证明模拟PWM与数字电路相结合后,可以在不牺牲模拟控制所具备的精度和无限分辨率的情况下,提供数字控制所具有的特性。In order to research the advantage analog PWM combined with data controlling, the paper designed an output can adjustable high-efficiency power switch and make it come true. By theoretical analysis designed a DC-DC converter which based on BOOST boosted circuit, PWM controlling chip and peripheral circuit, single chip microcomputer minimum system and keyboard/ display circuit. By emulation and debugging circuit in practice make the power switch can steady pressure, current limiter, display input/ output setting. The result show that when analog PWM combined with data controlling, it can provide data control＇s character, on condition that without sacrifice analog control＇s exactitude and unlimited resolutionn.

关 键 词：模拟PWM 数字控制 51单片机 

分 类 号：TN86[电子电信—信息与通信工程]