基于UC3842的反激式开关电源设计  

Design of flyback switching power supply based on UC3842

作　　者：戴路 张闽 刘欢 张永春 DAI Lu;ZHANG Min;LIU Huan;ZHANG Yongchun(School of Intelligent Engineering,Jiangsu Vocational College of Finance and Economics,Huaian 223003,Jiangsu,China)

机构地区：[1]江苏财经职业技术学院智能工程学院,江苏省淮安市223003

出　　处：《农业装备与车辆工程》2023年第3期133-136,共4页Agricultural Equipment & Vehicle Engineering

摘　　要：现代电子设备对直流电源的要求越来越高,为实现小功率开关电源的微型化、高效化和低成本,设计了一款基于UC3842的反激式开关电源。介绍了反激式拓扑结构和高频变压器的设计参数,控制芯片外围电路的功能及工作过程。实验结果表明,设计的开关电源可提供两路输出电压且具有稳定性好、纹波少的特点,验证了设计的正确性。Modern electronic equipment has higher and higher requirements for DC power supply.In order to realize the miniaturization,high efficiency and low cost of low-power switching power supply,a flyback switching power supply based on UC3842 is designed.It introduces the flyback topology,the design parameters of high-frequency transformer,the function and working process of the peripheral circuit of the control chip.Experimental results show that the designed switching power supply can provide two output voltages and has the characteristics of good stability and less ripple,which verifies the correctness of the design.

关 键 词：开关电源 UC3842 高频变压器 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]