›› 2016, Vol. 29 ›› Issue (2): 129-.

• 论文 • 上一篇    下一篇

基于LM5175的Buck-Boost车用开关电源设计

周鹏飞,钟再敏   

  1. (同济大学 汽车学院,上海 201804)
  • 出版日期:2016-02-15 发布日期:2016-02-25
  • 作者简介:周鹏飞(1991—),男,硕士研究生。研究方向:动力总成控制器关键技术。钟再敏(1973—),男,博士,教授,博士生导师。研究方向:燃料电池轿车动力系统集成等。

An Automotive Buck-boost Type Switching Power Supply Based on LM5175

ZHOU Pengfei,ZHONG Zaimin   

  1. (College of Automotive Studies,Tongji University,Shanghai 201804,China)
  • Online:2016-02-15 Published:2016-02-25

摘要:

针对一款应用于新能源汽车的电机驱动控制器,设计了一种基于TI公司的电源芯片LM5175的4开关Buck-Boost开关电源。根据车载情况对电源的要求确定输入输出电压范围、电流范围、开关频率,进而选择合理的输入输出电容、电感、MOSFET等元器件,完成了电源芯片外围电路的搭建。绘制开关电源系统的伯德图对开关电源的工作稳定性进行分析,优化开关频率等参数。通过相同负载不同输入电压和相同输入电压不同负载的两组实验验证,开关电源可稳定输出目标电压以及开关电源效率。

关键词: LM5175, 开关电源, Buck Boost

Abstract:

A four switch Buck-Boost power supply based on TI's power supply chip LM5175 is designed for a motor controller used in a new energy automobile.The input and output voltage range,current range and switching frequency are established according to vehicle-mounted conditions.Reasonable input and output capacitors,inductor,and MOSFETs are selected to build the power supply chip's peripheral circuit.The Bode diagram of the power supply is drawn to analyze the stability.The two experiments performed with the same load and different input voltage and with the same input voltage and different load respectively show that the power supply can work normally with good efficiency.

Key words: LM5175;power supply;Buck Boost

中图分类号: 

  • TM564