Other Parts Discussed in Thread: BQ76930
我们使用bq76940作为10s的应用,配置是4+3+3,现在用户反映第5、6、7s的电压下降的较多,实测发现采样电阻上有将近1mA的电流,而掉电后重新上电又恢复正常,隔段时间又会复现,请问是什么原因?谢谢。
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您好,请参考下面的内容:
Where do they measure the 1mA of current? I do not see any obvious errors in the schematic. I notice there are 1k resistors between the NC pins and the CAP pins (these should be 0 Ohms), but I do not think that would explain the issue.
And when you say 5, 6, and 7 - do you mean VC5, VC6, VC7 or do you mean BAT5, BAT6, BAT7?
Since this is a 10S system, is there a reason they use the BQ76940 instead of the BQ76930?