产品灌环氧胶,出厂时没问题,使用一段时间后会有输入电流增大的现象。正常情况下输入电流为十几ma,异常有100~200ma。请教下这是芯片损坏吗?
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.
HI
你最好是能分别确认到正常品和异常品的功率输入和功率输出来判定,电流是因为工作中负载变大了,还是有额外的电流被芯片消耗了(芯片损坏)。