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LTC6803-3测量最后一节电池电压偏小200mV左右

使用LTC6803-3测量10节串联电池电压,前9节电压都正常,最后一节电压测量值偏小200mV,不知道什么原因会导致该现象

  • This will typically be caused by supply current in the top cell sensing path. To avoid this, the supply pin should have its own filtering elements, not shared with the top cell sense input. This is done correctly on the demo board, so if the demoboard is doing this then it may be that the CELL12 connection is not tied to the top cell potential.

  • 谢谢你的解答,目前该问题已经解决,但是遇到了一个新的问题,目前我的一个控制板上面有3块LTC6803G-3的芯片,每个芯片测量10节电池电压,现在情况是前面2组芯片测量电压都是对的,最后一组(10节)测量值普遍偏小12mV左右