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  • BQ76940: BQ76940 Balancing timing

    Part Number: BQ76940 Hi, I want to confirm the bq769x0 scheduler in detail, from slua775, there are 2 balancing&measurement timing. I want to know the switching situation of 2 timing modes. I read this question but still not clear. BQ76940: cell balancing…

  • BQ76940: BQ76940 Balancing timing

    TI Thinks Resolved
    Part Number: BQ76940 Hi, I want to confirm the bq769x0 scheduler in detail, from slua775, there are 2 balancing&measurement timing. I want to know the switching situation of 2 timing modes. I read this question but still not clear. BQ76940: cell balancing…
    • Answered

  • BQ76940: Trying to reverse engineer a BMS using TI's BQ76940

    Resolved
    Part Number: BQ76940 Other Parts Discussed in Thread: BQ76200 , TIDA-00792 Thought this was going to be easy but, maybe I was wrong.... Figured first thing I'd do was see how the BQ7940 registeres were configured and work my way back from there. I've…
    • Resolved

  • BQ76940: BQ76940

    Part Number: BQ76940 Tool/software: Dear Team, We want to measure pack current using the Coulomb Counter (CC) feature, but CC_READY bit is not setting, And set cc as continuous mode . Write_data=0xFF; HAL_I2C_Mem_Write(&hi2c1, 0x08<<1, 0x00…

  • BQ76940: BQ78350-R1 / BQ76940: COV/SOV trips and voltage spikes during Cell Balancing

    Part Number: BQ76940 Other Parts Discussed in Thread: BQ78350-R1 , Hello, We are debugging a BMS design using the BQ78350-R1 gauge and the BQ76940 AFE. We are experiencing immediate "Cell Over Voltage" (COV) trips and occasionally "Safety Over Voltage…

  • BQ76940: BQ76940: "BQ76940 + BQ78350: EV2400 vs EV2500 for Calibration & BQStudio Compatibility"

    Part Number: BQ76940 Other Parts Discussed in Thread: BQ78350 , BQSTUDIO , , EV2500 , EV2400 Tool/software: Dear TI Team, I’m working on a BMS project using BQ76940 + BQ78350 for a 48V, 15S LiFePO₄ battery. Could you guide me on the recommended interface…

  • BQ76940: Schematic review for the 16 cell BMS BQ76940

    Part Number: BQ76940 Hi Team, We are designing a 16 cell BMS using TI's BQ76940 IC and we want to ask for a detailed schematic review to catch anything that we missed. We are also using some DC-DC coverters so it'll be great if you can look at it…

  • BQ76940: Bq76940 current averaging problem

    Part Number: BQ76940 Tool/software: Good day! When the system integrates charging function. Bq76940 reads the fluctuating current.(See Figure) Bq76940 current reading is set to once every 250ms. The blue line in the oscilloscope is the current…

  • BQ76940: External charger cell balancing affecting BQ76940 voltage readings.

    Part Number: BQ76940 Tool/software: We are using the BQ76940 purely for cell monitoring and as a second layer of charge protection on a battery pack which is being charged by an external charger. During standby, charging and discharging without balancing…

  • BQ76940: What could cause REGOUT produce no output?

    Part Number: BQ76940 What possible causes of this IC not to produce any voltage on REGOUT. ALERT is low, won't responsed to ANY I2C Reads or Writes. Is it just dead? Is there any procedure to check on its health, can't find anything in the data sheet…

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