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关于UC1901J的问题咨询

Other Parts Discussed in Thread: UC1901, UC3845

Hi team

客户有几个问题需要专家支持:

UC1901用在隔离反馈中有三个问题:
1.驱动输出driva/b与comp端或者内部运放反相端inv的关系是怎样?幅值是什么关系,幅值的波动又是什么关系?
2.驱动输出经过变压器整流后变成直流,那这个直流大小与运放反相端inv(即电压输出反馈端)是什么关系?输出电压越大,整流值越大?
3.UC1901与UC3845一起使用时,如何分别设计comp端的补偿电路?若将变压器整流后直流(当作稳定值)作为uc3845的反馈输入设计环路补偿,uc1901的环路补偿设计还有必要吗?

Best regards

Asoker