超宽输入电压范围三相开关电源的设计和优化

作者：超宽输入电压范围三相开关电源的设计和优化 日期：2010-06-28/span> 浏览：3712 查看PDF文档

超宽输入电压范围三相开关电源的设计和优化
孙轩,马皓*
（浙江大学 电气工程学院，浙江 杭州 310027）

摘要：针对工业用三相开关电源的宽输入电压范围要求，给出了一款利用LM50211实现的超宽输入电压范围的三相开关电源的设计和优化过程，其输入电压范围为线电压有效值40 VAC~450 VAC，提供了9 V/100 mA和12 V/4 W两路直流输出。实验结果表明，该电源具有输入电压范围宽，输入/输出隔离度高、效率较高等优点，可应用于三相电表等电源中。
关键词：超宽输入电压范围；三相开关电源； LM50211
中图分类号：TM933.4文献标识码：A文章编号：1001-4551(2010)04-0097-04

Design and optimization of the super wide input
voltage range threephase power supply

SUN Xuan, MA Hao
(College of Electrical Engineering, Zhejiang University, Hangzhou 310027, China)

Abstract: Aiming at the requirement of wide input voltage range of threephase switching power supply used in the industrial applications, the design and optimization of a super wide input voltage range threephase power supply using LM50211 was introduced. The input line voltage range was 40 VAC~450 VAC(rms), two DC outputs of 9V/100mA and 12V/4W were provided. The results indicate that the power supply has the advantages of wide input voltage range, high degree of input and output isolation and high efficiency. And it can be used in the threephase power supply for metering.
Key words: super wide input voltage range; threephase power supply; LM50211