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.

UCC256301/2/3/4的FB脚原理



在闭环稳定工作条件下,如果负载发生变化,FB脚的电压会变化吗?datasheet上说正常工作时内部的PMOS是一直ON的,那么该PMOS是工作在线性区还是饱和区?如果像开关一样工作在线性区,那就相当于内部的100kΩ Rfb是直接接到FB脚的,但是那样的话FB的电压应该会变化的。不知道这样的理解是否有误?