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您好
由于您没有提供您实际的原理图,无法做出相关直接的判断。
https://www.ti.com.cn/cn/lit/ds/symlink/ucc28019a.pdf
根据datasheet中7.2 Functional Block Diagram显示,您的Vout 取决于VAC、占空比等因素。
如果您的电路没有问题的话
您可以通过以下工具进行条件参数匹配。