电测与仪表Issue(4)：120-124,5.
基于SG3525的大电流低电压开关电源设计
Design of the Switching Power Supply with Large Current and Low Voltage Based on SG3525
牟翔永 1张晓春 1林刚 1孙秀斌1
作者信息
- 1. 成都信息工程学院 电子工程学院，成都 610225
- 折叠
摘要
Abstract
A design for the switching power supply with large current and low voltage is presented, which is based on the Pulse Width Modulator control circuit named SG3525. The DC/DC full-bridge converter is used for the main circuit of the switching power supply. The output signals of SG3525 drive IGBTs of the main circuit after photoelectric isolation and power amplifier. In order to achieve the stable output and the continuously adjustable current, the technologies of feedback and PWM are applied to the switching power supply. This paper introduces the specific design and the primary circuit parameters of the main circuit, the control circuit and the drive circuit. The experimental results show that the switching power supply can steadily operate and continuously regulate the output current from 45A to 90A.关键词
开关电源/大电流/SG3525/PWMKey words
switching power supply/large current/SG3525/PWM分类
信息技术与安全科学引用本文复制引用
牟翔永,张晓春,林刚,孙秀斌..基于SG3525的大电流低电压开关电源设计[J].电测与仪表,2013,(4):120-124,5.
