TI中文支持网Part Number:BQ76952Other Parts Discussed in Thread: BQ76942
BQ76952-8S-20221117.gg.csv
请专家看下我的BQ76952用在8串锂电池管理系统上的参数有什么问题没？我现在遇到的问题是，BQ76952在应用现场运行一段时间中突然BQ76952宕机了，正常来说LD和PACK引脚有电压的话就不会宕机吧？为什么我们的宕机了呢？请专家看看参数有没有问题。
Star Xu：
您好，8串电池请参考下面内容
How do I connect unused VC pins if I have a reduced cell count?
For the BQ76952, VC pins 0, 1, 2, 15, and 16 should always be connected to actual cells, with cells connected between VC0 and VC1, VC1 and VC2, and VC15 and VC16 (or VC9 and VC10 for the BQ76942). All other cell inputs can be shorted to reduce the cell count. An example configuration can be seen in the image below, where a 12S battery pack requires 4 VC pins to be shorted together:
Additionally, after reducing the cell count, you must set the Settings:Configuration:Vcell mode register to correctly reflect which cell inputs are connected; otherwise, CUV faults can trigger for the shorted cell inputs.
The following links provide more information on how to reduce the cell count and explain why certain VC pins need connections.
Timestamp 7:32 in Creating the Schematic for BQ769x2 Battery Monitors | TI.com Video
(+) BQ76952: The connection demand of BQ76952 when connecting fewer batteries – Power management forum – Power management – TI E2E support forums
Section 4.5 in https://www.ti.com/lit/pdf/sluuc33
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user1949781：
对，硬件没有问题，想让专家看下我的参数中宕机部分设置是否合理？
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Star Xu：
您好，正在查看，稍后回复。
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Star Xu：
您好，Could you check this FAQ and see if any of the conditions to enter SHUTDOWN mode were met?
Also make sure that no conditions to put the device into soft-shutdown were met either (also explained in the FAQ).
