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.

UCC28C42异常烧毁问题

Other Parts Discussed in Thread: UCC28C42

我按照下图连接了UCC28C42:

结果上电15秒左右UCC28C42烧毁 同时R7烧毁.

更换了一个面包板之后只焊接UCC28C42和VREF引脚的电容, 电容由原来的25V陶瓷电容更换为100v的电解电容, 结果片刻之后VREF电压由5V升高到11V左右,并不断跳动, 芯片再次损坏. 本次测量用的芯片从贸泽购买而来, 实在想不通为何会出此现象