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LM3481设计电源时电压环特性问题,求解惑!

Other Parts Discussed in Thread: LM3481

LM3481参考电路的原理图中下图所示

根据数据表给的内部结构,其反馈控制电压环等效电路如下图

这个结构与传统的反馈PI控制结构不一样,类似一个滞环比较结构,可以进行模型等效分析不,其传递函数是怎样的?希望能解惑