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.

BQ76930 cell balance问题

Figure 7. External Balance FET Gate Protection   这点讲到对均很MOS的G极保护问题,我一直看不懂到底是描述的是什么意思。

1,inrush current through the filter resistors will turn on P-channel balance FETs and pull up the
lower input  短路后,浪涌电流会通过滤波电阻打开均衡MOS,并且拉高低平输入。

我是这个理解的,短路后电芯电压接近0V,滤波电容Cc14上面的电荷会流过Rc14,Rg14,但是我根本看不出来 这个过程对均衡MOS的G极有什么影响?G极是需要低电平驱动的。 

还有pull up the lower input 拉高低平输入,这个又是什么意思?

2,This effect can continue down the cell stack 此种影响将会持续到级联电芯,这句话又是什么意思?