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  • BQ40Z80: BQ40Z80

    TI Thinks Resolved
    Part Number: BQ40Z80 Other Parts Discussed in Thread: BQSTUDIO , EV2400 , Tool/software: Hello Does the configuration of this component have to be done through the BQSTUDIO software? Is it possible to configure the component using commands via SMBUS…

  • BQ40Z80: A question about functional design and compatibility between an external active balance circuit and a capacitance gauge bq40z80.

    Part Number: BQ40Z80 Tool/software: We are interested in the functionality and integration of the bq40z80 chip for balancing our batteries. We have an evolutionary board with which we are experimenting to evaluate the best solution for us, and we came…
    • Answered

  • BQ40Z80: BQ40z80 factory default serc file

    Resolved
    Part Number: BQ40Z80 Tool/software: Hello, In one of our projects, we are using the BQ40z80 and would like to bring the device to its factory default state. Could you please provide the factory default .srec file for the BQ40z80? Regards Apurva
    • Resolved

  • BQ40Z80: bq40z80 design won’t wake via SMBus – PBI starts at 1.8 V then drops, CHG/DSG gates high from power‑up

    Part Number: BQ40Z80 Other Parts Discussed in Thread: BQSTUDIO , EV2400 Tool/software: BQ40Z80_BMS_TI.pdf Hello, I’m using a bq40z80 in a 6‑S Li‑ion pack design and cannot get the gauge to wake/communicate over SMBus. My schematic is attached. System…

  • BQ40Z80: BQ40z80

    Part Number: BQ40Z80 Other Parts Discussed in Thread: BQSTUDIO , EV2400 Tool/software: Hi We have designed a 5S1P Smart pack using BQ40Z80. In this when tried to connect it to the BQ studio we could able to open the window. It is not detecting the…
    • Answered

  • BQ40Z80: BQ40Z80

    Resolved
    Part Number: BQ40Z80 Other Parts Discussed in Thread: BQSTUDIO Tool/software: I am trying to establish an external I2C connection between an STM32L452RE-P board and the BQ40z80 EVM board using the SMBus interface, bypassing the on-board MCU. I have set…
    • Resolved

  • BQ40Z80: DAStatus1 Power scaling

    Part Number: BQ40Z80 Tool/software: Dear TI Team, when running tests with a prototype battery using a bq40z80 and a current scaling factor of 2, I noticed that the "Power" value in the DAStatus1 register is exactly half of the value I get if I calculate…
    • Answered

  • BQ40Z80: CRC Calculation for BQ40Z80

    Resolved
    Part Number: BQ40Z80 Tool/software: Hi Team, I am trying to write a code to calculate the crc via software and compare it with the CRC byte communicated by the gauge while reading certain registers(Let's take the Voltage Register 0x09 for example…
    • Resolved

  • BQ40Z80: Bit definitions in BQ Studio (Version : 1.3.127 Build 3 and latest Stable) don't agree with BQ40Z80 Technical Reference Manual

    Part Number: BQ40Z80 Tool/software: Hello, I'm fault findings some of our batteries with BQ40Z80 BMS inside - I've got differences in the packs with bits in the IT Status register - looking at the bit definitions between BQ Studio and the BQ40Z80 Technical…

  • BQ40Z80: Unexpected reset

    Part Number: BQ40Z80 Tool/software: Hi Folks, We are having an issue with the BQ40Z80 which seems to perform unexpected resets every now and then. This happens while the battery is in discharge, usually at high amps but not always (20A/30A) communications…

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