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  • AM5728: L3 custom errors when starting DSPs

    Part Number: AM5728 Other Parts Discussed in Thread: BQ40Z60 , I'm seeing different behavior when loading the same DSP firmware image (with the exception of trivial address differences in the resource tables) on DSP1 vs. DSP2. DSP1 Starting DSP1…

  • Linux/AM5728: DSP Load Failure

    Part Number: AM5728 Other Parts Discussed in Thread: BQ40Z60 Tool/software: Linux Background: Processor SDK 03.03.00.04 DSP1 and DSP2 are dynamically started and stopped as the system is running using the bind/unbind nodes Problem: DSP periodically…
    • Answered

  • Minimum Voltage Output Equation SLUUA04A

    Resolved
    In the document SLUUA04A, section 4.2 the equation for Minimum Voltage Output is Minimum Voltage Output = 610 * (1+R2/R1) which seems to make sense because R1 and R2 from figure 4-1 form a voltage divider around the FB pin. What is troubling me…
    • Resolved

  • BQ40Z60EVM not charging when set up for 2S2P configuration.

    I have the BQ40Z60EVM and used it to charge a 3S stack after changing Cell chemistry to match the batteries. Then I changed the jumper, DA CC1 and CC0 and connected up a 2S2P stack. I also changed Design and Qmax values to match the batteries. It will…
    • Answered

  • [FAQ] How Many FETs Can Gauges With Integrated Protection Drive?

    Resolved
    Other Parts Discussed in Thread: BQ28Z610 In many high power and high cell count battery applications, the need arises to reduce the RDS on of the load switch FETs to reduce conduction losses. The two main ways to achieve this are by adding more FETs…
    • Resolved

  • RE: BQ40z50-R1: Programming the chemistry with the .gg file

    Hi Luis, No chemistry data is not included in the gg file. It has to be the srec you program on the gauge to include the chemistry data. Pls see attached slides on the production process from our deep dive seminar concluded not long ago. Battery…

  • RE: BQ20Z655-R1: Starting with BQ20Z655-R1 and moving to production

    Hi Eesu Yes we recommend you get an EVM to make your process easier. You can also use your own board as long as it is was properly designed and you are able to connect it to the computer via the ev2400. The steps you need to perform are listed in…

  • Cell charge balancing of Li-Ion cells in parallel

    Other Parts Discussed in Thread: BQ40Z50-R1 , BQ24725A We are designing a new battery pack that requires the capacity of 9 LiFePO4 cells, 3 cells in series, with 3 series strings total. If we connect 3 cells in parallel for each of the "series cells"…
    • Answered

  • RE: BQ40Z60EVM-578: Data Flash wear out (DFW) is set (1). How to make the DFW bit reset.

    Resolved
    Please find the gg file provided as an attachment. 4S_pack_BQfile.csv

  • PV bit is set in Charging status but not precharging.

    I have a 2S2P LION configuration and wanted to see how it recovers from Cell undervoltage. Discharged the pack below 5V and CUV and then CUCV were set as expected. Cell 1 recovered to 3208 mV and Cell 2 2543 mV. Charging status PV bit is still set but…

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