第32卷第3期2020年9月
JOURNAL OF NINGBO UNIVERSITY OF TECHNOLOGY保健项链
Vol.32No.3
Sep.2020
DOI:10.3969几i ssn.1008-7109.2020.03.003
定时药盒
陈张景宣，王峰，姚晓磊
(宁波工程学院电子与信息工程学院，浙江宁波315211)音圈电机模组
摘要：针对传统开关电源精度低、效率低以及自适应能力差的问题，设计了一种基于LM5715电压转换器和DSP数字信号处理器的新型Buck-Boost电路。LM5715在降压和升压模式下均采用电流模式控制，以实现出的负载和线路调节°DSP处理器通过内部PWM电路实现四个开关管的导通控制，开关频率由 外部电阻器进行反馈控制。仿真结果表明，相比于传统的升压降压变换器，所设计的变换器具有较宽范围的输入电压、稳定的输出电压以及较高的电源转化效率，具有较好的实用性。
关键词：Buck-Boost电路；变换器；DSP；LM5715
中图分类号：TP23文献标识码：A文章编号：1008-7109(2020)03-0014-06
Design of a New High Efficiency Four Switch Buck-Boost Circuit
CHEN-ZHANG Jingxuan,WANG Feng,YAO Xiaolei
(School of Electronic and Information Engineering,Ningbo University of Technology,Ningbo,
Zhejiang,315211,China)
Abstracts:Aiming at the low precision,low efficiency and poor adaptive ability of traditional switching power supply,a new Buck-Boost circuit based on LM5715voltage converter and DSP digital signal processor was designed.The LM5715adopts current mode control in both buck and boost modes for excellent load and line adjustment.The DSP processor achieved the on-off control of four switching tubes through the internal PWM circuit,and the switching frequency is controlled by the feedback fro
金丝雀定位m an external resistor.The simulation results show that the designed converter has a wide range of input voltage,stable output voltage and higher power conversion efficiency and has better practicality compared with the traditional step-up and step-down converter.
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Keywords:Buck-Boost circuit,converter,DSP,LM5715
果蔬气调库
0引言
Buck电路和Boost电路是直流电源变换中最常用的两种设计方案，这两种电路经常一起出现在电路设计当中,Buck电路的输出电压小于输入电压,Boost电路的输出电压大于输入电压。Buck和Boost
收稿日期：2020-03-12修回日期：2020-06-16
通信作者：王峰(1989-)，男，安徽安庆人，硕士，主要从事运筹学方面研究，E-mail:*********************
