摘要
介绍了一种基于集成式开关电源芯片TOP256Y的反激式开关稳压电源。分析了TOP256Y的特性和工作原理,设计了一款功率50 W、输出+24 V的开关电源,并对系统开关电源实用电路及主要单元电路进行了详细的分析,进行了参数值计算、器件的选取与电路设计。最后,对该电源进行了整体性能分析。实验证明:该开关稳压电源具有效率高、纹波小、输出电压稳定等优点。
A flyback switching power supply based on TOP256Y is presented. The principle and characteristics of this single- chip switching power supply are analyzed. A single-chip switching power supply is designed according to the features of the chip which output power is 50 W and output voltage is ＋24 V. The design method and practical circuit are described. Calculation of the values of the parameters and selection of the components are provided. At last, the analysis of the whole electrical character are given. The test result shows the power supply have high efficiency, low ripple, stability output voltage and so on.
出处
《电子技术应用》
北大核心
2009年第8期71-75,共5页
Application of Electronic Technique
关键词
开关电源
单端反激式
高频变压器
switching power
single-chip flyback
high frequency transformer
