TI中文支持网Other Parts Discussed in Thread:BQ76952
目前一个新开发的项目在用这颗芯片，第一次上电发现952传回来的数据都是0，暂时没找到具体原因，请ti的专家帮忙审一下原理图，是不是952的原理图上有什么错误。1738.M102A16S7TU1-SCH-V1.0.pdf8535.M102A16S7TU1-SCH-V1.0.pdf
Star Xu：
您好，正在查看，稍后回复。
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user6140946：
您好，请问原理图设计上有什么问题吗，我测了一下I2C的波形，感觉像是952和MCU之间没有通讯成功，还请帮忙给看一下，哪些情况会导致952和MCU之间通讯不成功，谢谢
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Star Xu：
您好，请参考下面的回复：
The top cell must be used for BQ76952, so R104 perhaps should not be installed and the short would be more appropriate at cell 13.The Cc capacitors (C133, etc) are commonly 220 nF.The right side of C141 should connect to GND rather than VC0 to avoid pushing VC0 below GND during a heavy load on the cells.D120 is unusual, BQ76952 should not need the component, if it conducts from BAT pin load it may result in a low voltage report of cell 16.A cap may be desired on the Q100 collector, it can avoid transients coupled through the transistor.The REGIN cap C154 is recommended to be 22 nF The BQ76952 data sheet does suggest a 10M pull down on BREG if shutdown is used.If REG2 is not used it does not need a cap, it would not be configured.ALERT does not need the pull down R312, but the designer may want it for their system use.TS1 and TS2 should not go much above 1.8V if used for thermistor or ADC inputs.The D310 and D323 ratings seem high.A small capacitor may be used for transient suppression, see the data sheetThe FET outputs are not shown connected, but CP1 is supported.If not needed CP1 can be shorted to BAT pin.PACK is an input and should be connected either low or through a 10k resistor to a high voltage.LD has several functions, it may be controlled or tied low or to a high voltage through a 10k resistor.FUSE has an input function, if not used the pin might be connected to VSS to avoid the status changing when the pin floats.
