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.

UCC3895EVM-001测试中控制芯片突然过流

Other Parts Discussed in Thread: UCC3895

各位好,

今天在使用UCC3895评估板测OUTA,OUTB输出波形时候突然VCC电流达到0.12A限定值,电压由12V下降为1.9V,估计电源没有限流的话板子就烧了,通过万用表测试评估板VCC对地电阻18欧姆,,正常工作时芯片供电电源为12V,0.07A。

现在再给板子VCC加电直接到达限流值,请问是不是说明板子上UCC3895芯片被击穿,但是如果UCC3895的VCC引脚短路,对地电阻为什么不为零!请各位工程师帮忙解答,万分感谢!

UCC3895评估板技术文档:www.ti.com.cn/.../slua107a.pdf