Great news, So in summary, the BQ769x0 (BQ76930 in my case) will work with the following TI gauges. Which unlike the BQ78350, aren't 'controllers', so require/enable custom management including custom balancing. Perfect.
BQ34z100-G1
impedance track…
Part Number: BQ76952 Other Parts Discussed in Thread: BQSTUDIO , BQ7718 , TIDA-010030 , BQ34Z100-G1 Hello TI Team,
Problem faced while testing CELL Balancing feature,
1. We are testing Battery pack14S2P with BQ96952EVM(Seal Date-09/21/20), we set…
Hi Darshil,
Why would you want to use a non-TI battery monitoring IC? ;)
I think this should be possible, but you would incur additional voltage drop as a result.
Some other options depending on the number of cells needed in the application:
Our…
Hi Pankaj,
The BQ76930 cannot operate stand-alone and requires an MCU. There are multiple reference designs available using this device - TIDA-00449 has reference code available and the BQ76930 product folder has simple example code using I2C with CRC…
Hi,
If I understand correctly, you want to connect a 13 cell battery to the BQ76940. Table 26 in the device datasheet shows how to make the connections for different cell counts. For 13 cells, you short VC13 to VC14 and you short VC8 to VC9. The EVM…
Hi Steven,
The CHG pin of the BQ76930 is not activated for a short circuit condition, only the DSG FET is turned off. Here are the links to 5 different reference designs using the BQ769x0 family:
http://www.ti.com/tool/TIDA-00449
http://www.ti.com…
Hi Hemavathi,
The BQ76940 datasheet has a section that shows how to connect the cells for reducing the cell count (see Table 26). There is also a TI Reference Design that is 13S - you can use this as a reference for connecting 13 cells: http://www.ti…
Hi Pranit,
The CB bits control internal FETs that connect the VCx inputs to allow the cells to balance. For example, VC8 and VC7 are connected together when the CB8 bit is set. When the CB9 bit is set, it connects VC9 to VC8 which is okay because they…
Part Number: BQ76940 Other Parts Discussed in Thread: CSD19535KTT , BQ76930 , TIDA-01093 , TIDA-010030 , CSD19536KTT , TIDA-00449 Hi I am Anand & doing BMS for EV 2W Application.
Please me know if cascading is possible with BQ76940 i m using 16 series…
Hi Leela,
For battery gauging, the flat part of the curve can cause very poor accuracy. So the knee of the discharge curve (usually around 7% SOC) and the full charge point (where valid charge termination occurs) are very important data points for estimating…
