This thread has been locked.
If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.
求大神解析一下参考原理图,反馈电路的工作原理。
8407.TPS23754-EVM USERGuider.pdf
TL431 输出端稳定输出一个电压,然后 光耦出 2脚就是 TL431输出的电压,然后需要输出的就会参考这个电压,发光体发光 线性反馈回去!