陈菁,张万

• 1:北京林业大学理学院

摘要(Abstract)：

针对目前使用的开关电源几乎都采用旋钮开关调节电压,调节精度不高,而且经常跳变,使用麻烦的缺点,设计一种基于STC12C5A60S2单片机的可变输出电压的电源,使其功能更加完善并提高智能化程度。它产生两路47 k Hz的PWM脉冲信号,分别经过MOS驱动IC IR2104控制两个BUCK电路。单片机内部自带的10位ADC能通过电压电流检测电流实时反馈两路的电流和电压数值,并由此调整输出的PWM的占空比,形成电压闭环控制系统。设计按键能设置输出电压的大小、液晶屏显示实时输出电压与电流。测定显示在额定电流1 A输出的情况下,满载的供电效率为82%,输出电压误差小于0.15 V。

关键词(KeyWords)： 开关电源;BUCK;STC单片机;IR2104;可调输出;精确控制

Abstract:

Keywords:

基金项目(Foundation): 北京林业大学2016年度教学改革研究项目(BJFU2016JG044)~~

作者(Author): 陈菁,张万

DOI: 10.16652/j.issn.1004-373x.2018.02.023

参考文献(References)：

• [1]PRODIC A,MAKSIMOIVIC D,ERICKSON R W.Design and implementation of a digital PWM controller for a high-frequency switching DC-DC power converter[C]//Proceedings of Conference of the IEEE Industrial Electronics Society.Denver:IEEE,2002:893-898.
• [2]邱丙霞,王延明.浅析开关电源的分类及应用[J].环球市场信息导报,2013(24):123.QIU Bingxia,WANG Yanming.The classification and application of switching power supply[J].Global Market Information Guide,2013(24):123.
• [3]李逾晖.交直流开关电源数控系统设计及关键问题研究[D].杭州:浙江大学,2004.LI Yuhui.Research on design and key problems of NC system for AC/DC switching power supply[D].Hanzhou:Zhejiang University,2004.
• [4]梅阳凤.数字开关电源的设计与实现[D].广州:广东工业大学,2011.MEI Yangfeng.Design and implementation of digital switching power supply[D].Guangzhou:Guangdong University of Technology,2011.
• [5]HAN Weimin,ZHAO Jianyu.Advances in computer,communication,control and automation[M].Berlin:Springer,2012:329-336.
• [6]王超.MOSFET/IGBT半桥驱动芯片IR2111的应用研究[J].机电工程技术,2005,37(8):57-59.WANG Chao.Application research of MOSFET/IGBT half bridge driver chip IR2111[J].Mechanical&electrical engineering technology,2008,37(8):57-59.
• [7]吴爱春.基于高性能单片机的功率直流开关电源的设计[J].硅谷,2012(3):75.WU Aichun.Supply design on DC switching power based on high performance MCU[J].Silicon valley,2012(3):75.
• [8]JONES P L,SPREADBURY P J.Analogue electronic circuits and systems[M].New York:Cambridge University Press,1999:45-62.
• [9]高宏洋.DC-DC直流转换电源的设计[J].网友世界,2012(10):30.GAO Hongyang.Design of DC-DC DC conversion power[J].Net friend world,2012(10):30.
• [10]FORGHANI-ZADEH H P,RINCON-MORA G A.Currentsensing techniques for DC-DC converters[C]//Proceedings of Midwest Symposium on Circuits&Systems.Tulsa:IEEE,2002,2(6):577-580.
• [11]PERREAULT D J,SELDERS R L,KASSAKIAN J G.Frequency-based current-sharing techniques for paralleled power converter[J].IEEE transactions on power electronics,1998,13(4):626-634.