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  • BQ76940: BQ76940 FET Driver Pins - CHG and DSG

    Part Number: BQ76940 Other Parts Discussed in Thread: BQ76200 , TIDA-010030 , TIDA-00792 , BQ76930 , TIDA-00449 In the battery management system I made with the BQ76940 integration; I made a design to control the mosfets by driving the optocoupler. This design…

  • BQ76940: BQ76940 initilization abnormal in -10 ℃

    Part Number: BQ76940 Dear Sir The recent test found that when BMS is below -10 ℃, (it is no problem for the temperature to recover above 0 degrees) after AFE enters Shutdown Mode and wakes up through TS1 pin, MCU cannot initialize AFE successfully, resulting…

  • BQ76940: cell balancing timing

    Part Number: BQ76940 We are using bq76940 for passive balancing and we have a situation with the balancing timing. We wish to do balancing for 3 cycles (250ms) and disable balancing for 1 cycle. Our application code executed every 250ms scheduler as the…
    • Answered

  • BQ76940: BQ76940 Collection value is not accurate

    Resolved
    Part Number: BQ76940 Hi The customer design with BQ76940 cascade for 24 series cells. At 2A, 5A, and 8A, abnormal values ​​appear, and the values ​​are all 0x1000. Please give some suggestions. Thanks Star
    • Resolved

  • BQ76940: BQ76940

    Part Number: BQ76940 Hi, I'm working with a custom battery pack (54.6v (13 cells), 20A), manufactured by a Chinese company. They designed the battery management system using BQ7694003DBT from TI. An issue exists with this BMS, and when I connect…

  • BQ76940: BQ76940

    Part Number: BQ76940 Hi Ti Team, I am using the BQ7694003DBT BMS IC for battery managment with stm32 microcontroller. I am using the "sluc583" source code.I am reading the cell voltages,pack voltages which is appearing ok. Then i am reading…

  • RE: BQ76940: BQ76940 Cascade BMS

    Hello Bao, I am not sure why the person who made this reference design decided to use 10-uF for these. However, these are too large. We typically recommend to use 0.22-uF for all the cell input capacitors. This is because there can be error in the measurements…

  • RE: BQ76940: Use 0.47uF on REGOUT pin

    Hello Statham, The REGOUT powers assorted internal circuitry, including the communication buffers and coulomb counter. If there is no external load the capacitor might be on the small range of the recommended values. Section 9 REGSRC Supply from the bq769x0…

  • BQ76940: Is it available for lithium iron phosphate battery?

    Part Number: BQ76940 Other Parts Discussed in Thread: BQ76200 , BQ76952 , BQ77216 Hi My customer is trying to use BQ76940, for the spec below. Is there any problem using it? -SPEC- 1. Battery: lithium iron phosphate battery 2. Series : 15S 3. cell voltage…

  • BQ76940: BQ76940

    TI Thinks Resolved
    Part Number: BQ76940 Dear Texas Instruments, I want to read the cell voltage using BQ769400DBT BMS IC with help of stm32f105 microcontroller via I2C communication. The link provided by you ( https://www.ti.com/lit/zip/sluc701 ) have BQ769x2Header.h header…

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