一种新颖低成本程控直流电源设计方案  

A Novel and Inexpensive Programmable DC Power Design

作　　者：徐玮巍 高颂[1] 孙晨晨[1] 成杰 叶文武 徐寅林[1] Xu Weiwei;Gao Song;Sun Chenchen;Cheng Jie;Ye Wenwu;Xu Yinlin(School of Physics and Technology,Nanjing Normal University,Nanjing 210023,China)

机构地区：[1]南京师范大学物理科学与技术学院,江苏南京210023

出　　处：《南京师范大学学报（工程技术版）》2018年第3期74-78,共5页Journal of Nanjing Normal University(Engineering and Technology Edition)

基　　金：江苏省高等学校自然科学研究面上项目(18KJB510020)

摘　　要：宽范围、高分辨率、大功率输出一直是程控电源设计中的难点.借助高分辨率数模转换器间接调节开关型稳压电路,同时通过反馈电路利用高分辨率模数转换器监测输出电压的大小,实现了一个闭环的程控宽范围、高分辨率和大功率的直流电源.以STM32为测量控制核心,利用其片内12 bit数模转换器及模数转换器,控制廉价的开关型电压调节器LM2596S,实现了一个程控高分辨率、宽范围和大功率的低成本直流电源.该电路设计方案具有体积小、输出稳定、使用方便等优点.Wide range, high resolution and high power output are difficulties of a programming power design. A scheme is designed by means of high-resolution digital-analog converter to adjust the switching regulator circuit, while the feedback circuit makes use of high-resolution analog-digital converter to monitors the size of the output voltage indirectly, thus achieving a closed loop programmable high-resolution wide range,high-power DC power. The scheme uses the STM32 as a control core, and uses its on-chip 12 bit digital-analog converter and analog-digital converter and low-voltage switching regulator LM2596S specifically to achieve a high-resolution wide-range programmable high-power and inexpensive DC power. The circuit design has the advantages of small size, stable output,easiness to use and so on.

关 键 词：宽范围 高分辨率 大功率 低成本 直流电源 

分 类 号：TH711[机械工程—测试计量技术及仪器]