电子器件Issue(4)：785-789,5.DOI:10.3969/j.issn.1005-9490.2015.04.014
基于UC3842的三路输出小功率开关电源设计
Design of a Three Output Small-Power Switching Power-Supply Based on UC3842
王侠 1王进军2
作者信息
- 1. 西安科技大学电气与控制工程学院，西安710054
- 2. 陕西科技大学理学院，西安710021
- 折叠
摘要
Abstract
A switch converting 48 V to the +5 V,15 V switching power supply has been designed. UC3842 used as PWM controller;resistance,TL431 and linear photoelectric coupler components as a voltage sampling feedback cir-cuit. The accuracy of main output voltage(+5 V DC@2A) is 0.5%,the ripple of voltage is 0.4%;the accuracy of auxiliary output voltage 1(+15 VDC@500 mA)is 2%(14.7 V),the ripple of voltage is 0.13%;the accuracy of aux-iliary output voltage 2(-15 V DC@500 mA) is 2%,the ripple of voltage is 0.33%. The switching power supply has high precision,small ripple,high efficiency and high reliable,which can be widely used in all kinds of small power conversion applications.关键词
开关电源/UC3842/脉冲宽度调制/电压精度Key words
switching power-supply/UC3842/pulse width modulation/voltage precision分类
信息技术与安全科学引用本文复制引用
王侠,王进军..基于UC3842的三路输出小功率开关电源设计[J].电子器件,2015,(4):785-789,5.
