现代信息科技2026，Vol.10Issue(18)：40-44,52,6.DOI:10.19850/j.cnki.2096-4706.2026.18.008
18W宽电压输入反激开关电源设计
Design of an 18 W Universal-Input Flyback Switching Power Supply
摘要
Abstract
To meet the demand for global mains compatibility of low-power isolated switching power supplies,this paper designs a flyback switching power supply with a wide input range from 90 V to 264 V AC and an output of 12 V DC/1.5 A.On the basis of a conventional design,a DC bus voltage calculation method constrained by the input capacitor is introduced,and the full design flow from magnetic core selection to winding parameter determination is completed.A physical prototype is then fabricated and tested.The test results show that the designed power supply operates stably over the full input voltage range,with high output accuracy,low ripple,and satisfactory efficiency,achieving a full-load efficiency above 86％.It provides a useful reference for the development of similar low-power,wide-input-voltage flyback power supplies.关键词
反激变换器/宽电压输入/开关电源/断续导通模式(DCM)Key words
Flyback converter/wide input voltage/switching power supply/DCM分类
信息技术与安全科学引用本文复制引用
谭铭鸿,陈浩,张伟,胡琅..18W宽电压输入反激开关电源设计[J].现代信息科技,2026,10(18):40-44,52,6.基金项目
2024年广东省联合培养研究生示范基地(202488) （202488）
深圳市恒运昌真空技术有限公司技术开发项目(202425) （202425）
