| 基于TOP225Y的双输出开关电源设计 |
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| 引用本文： | 闫群民,马永翔. 基于TOP225Y的双输出开关电源设计[J]. 电源技术应用, 2008, 0(7): 15-19 |
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| 作者姓名： | 闫群民 马永翔 |
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| 作者单位： | [1]西北工业大学自动化学院,陕西西安710072 [2]陕西理工学院电气工程系,陕西汉中723003 |
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| 摘 要： | 介绍了一种基于TOP225Y的离线式PWM集成的反激式开关电源，阐述了TOP225Y的内部结构及工作原理，设计了双路输出为20V／1A，15V／1A的开关电源，给出了系统的硬件结构图，同时对外电路进行了设计和分析。按照要求，进行了电路参数的实际计算，给系统选择了合适的高频变压器，输出整流滤波电路及反馈电路等，最终给出了测试结果和分析。
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| 关 键 词： | 开关电源 PWM 反激式 高频变压器 |
A Switching Power Supply Two Output Based on TOP225Y |
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| YAN Qun-min MA Yong-xiang. A Switching Power Supply Two Output Based on TOP225Y[J]. Power Supply Technologles and Applications, 2008, 0(7): 15-19 |
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| Authors: | YAN Qun-min MA Yong-xiang |
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| Affiliation: | YAN Qun-min, MA Yong-xiang(1.Northwest Polytechnical University, Xi＇an Shaanxi 710072, China;2.Shaanxi University of Technology, Hanzhong Shaanxi 723003, China) |
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| Abstract: | A fly-back switching power supply based on TOP225Y is presented,analyzes its functional block diagram and principle .The system has the two output circuit 20V/1A and 15V/1A was design and discussed.According to the design requirements,deign outside circuit,given the system hardware calculation of the values of the parameters and selection high frequency transformer,input rectifier-filter circuit,output rectifier-filter circuit and feedback circuit,at last analysis output voltage wave. |
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| Keywords: | switch power PWM fly-back high frequency transformer |
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