摘要
在分析反激式开关电源控制框图的基础上,得到了功率级电路的传递函数。为避免连续电流模式的右半平面零点影响,设计了基于TL431和光耦TLP781的反馈补偿网络。应用Matlab提供的伯德图分析工具,对反馈网络传递函数进行分析,优化了补偿网络的电路参数。最后通过实验证明设计的反馈网络具有良好的稳定性和动态响应特性。
Based on the analysis of the control block for flyback converters, the transfer function of the power stage is obtained. The feedback loop based on the TL431 and TLP781 is designed in order to avoid the effect of the right half plane （RHP） zero. And the optimal circuit parameters of the feedback loop are obtained by analyzing the transfer function of the feedback loop. In this process, the Bode tools supplied in Matlab are used. In the end, the good stability and the dynamic response characteristics of the feedback loop are displayed with an experiment.
出处
《电源技术应用》
2009年第1期23-27,共5页
Power Supply Technologles and Applications
