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  • RE: BQ769142: BQ769142: Recovery from OCD

    Hi Hamzeh, This is still not normal. Can you please go ahead and send your settings? It would also be good if you could capture the behavior you describe on the CHG pin with a scope along with PACK+ and DSG to show when the event occurs. Thanks, Matt …

  • RE: BQ769142: BQ769142: short circuit test

    Thanks, after replying by Math and having more test and study, I explained the issue with more details in below thread:. As far as I understand, there is no good solution for short circuit.... e2e.ti.com/.../bq769142-short-circuit-and-damaged-bms
    • Answered

  • BQ769142: BQ769142: I2C write problem

    Resolved
    Part Number: BQ769142 Hello, I have a BQ769142 connected to a MCU by I2C. First, I could read direct values (cell voltages, die temperature,...) without any problem. However, when I want to write to the device, I noticed that I can't even write to direct…
    • Resolved

  • BQ769142: Basic test setup for BQ769142

    Part Number: BQ769142 Hello, I've a PCB designed for BQ769142 battery manager. I completely followed the TI reference design for connections. At first test, I just wanted to see REG18 output (1.8V internal regulator), and REG1 and REG2 outputs to be…
    • Answered

  • BQ769142: DAStatus6 passQ overflow?

    Resolved
    Part Number: BQ769142 Hi there, we are currently using the BQ769142 on a custom board and it works like a charm. We are very happy with it. However, I'm seeing now one strange thing and would like to have some advice as I couldn't find the answer by myself…
    • Resolved
    • Answered

  • BQ769142: Cell connection for 10s

    Resolved
    Part Number: BQ769142 The datasheet states that if a connection is not needed then the unused cell input pins should be shorted to adjacent cell input pins. Is the below image a correct interpretation of that statement for a 10s pack?
    • Resolved
    • Answered

  • BQ769142: Grounding reference for signal lines.

    Resolved
    Part Number: BQ769142 In the reference schematic and development board PGND is used on the signal headers as seen in the image. Why is PGND used here instead of VSS?
    • Resolved

  • BQ769142: Pre-discharge activation scenarios

    Part Number: BQ769142 Hello, I wanted to activate pre-discharge on my BMS chip, with only timer based activation. First I thought, even if it does not activate whenever a load is connected (because DSG is already ON in relax mode), it should has no harm…
    • Answered

  • RE: BQ769142: Short circuit and damaged BMS

    Resolved
    Hi, I want to report that, after having two FETs correctly parallelized (separated Gates with adding separate resistors), and reducing the common gate resistor to 100Ohm, and defining the SCD limit as 80A-15us, I ran the test again. This time, in contrast…
    • Answered

  • BQ769142: BMS reset problem in 15A test

    Resolved
    Part Number: BQ769142 Hello, I've done a 15A test on a 48V scooter battery on my BMS card. Customer wants 15 min test. Everything seemed to be fine for first minutes (FET temperature stabilized at 78 degree, and MCU UART connection showed BMS in working…
    • Resolved

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