| 多路输出反激式开关电源的反馈环路设计 |
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| 引用本文： | 徐勇,金辛海.多路输出反激式开关电源的反馈环路设计[J].电源技术应用,2009,12(1):23-27. |
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| 作者姓名： | 徐勇 金辛海 |
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| 作者单位： | 上海新时达电气有限公司,上海201802 |
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| 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。
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| 关 键 词： | 反激式开关电源 反馈补偿 连续电流模式 右半平面零点 传递函数 |
Feedback Design of Flyback Converters for Multiple Outputs |
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| XU Yong JIN Xinhai.Feedback Design of Flyback Converters for Multiple Outputs[J].Power Supply Technologles and Applications,2009,12(1):23-27. |
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| Authors: | XU Yong JIN Xinhai |
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| Affiliation: | Shanghai STEP Electric Co.;Ltd;Shanghai 201802;China |
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| Abstract: | 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 feedba... |
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| Keywords: | Flyback Converter Feedback Compensation CCM RHP zero transfer function |
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