Frequent Questions

  • [FAQ] BQ34Z100-G1: How to Seal and Unseal

    Part Number: BQ34Z100-G1 Other Parts Discussed in Thread: BQSTUDIO The BQ34Z100-G1 provides three security modes that control data flash access permissions according to the table below: FULL ACCESS mode allows the BQ34Z100- G1 to directly transition…

  • [FAQ] BQ34Z100-G1: Data Accuracy Issues

    Part Number: BQ34Z100-G1 Other Parts Discussed in Thread: BQSTUDIO ADC measurements are taken only once per second. Due to this it is recommended data only be read at a 1Hz rate. The firmware is not designed to be read from at a rate faster than 1 second…

  • [FAQ] BQ34Z100-G1: Not able to access data(read/write)

    Part Number: BQ34Z100-G1 When trying to read/write ensure that the gauge is not in sealed mode as you do not have access to the data flash in this mode. Additionally, if the voltage falls below the Flash Update OK voltage parameter the gauge will not…

  • [FAQ] BQ34Z100-G1: General Timing Recommendations for I2C

    Part Number: BQ34Z100-G1 When a host system requests updates, it must factor in the flash update times associated with the gauges firmware. The gauge firmware ACKs a properly received data flash write request. This has the effect to immediately release…

  • [FAQ] BQ34Z100-G1: How fast does the gauge update current and voltage registers?

    Part Number: BQ34Z100-G1 The register update frequency is based on power mode. In Normal mode the gauge should update these registers every second. For sleep mode the update time can be up to 20 seconds. However, the gauge is accumulating current totals…

  • [FAQ] BQ34Z100-G1: How to Calibrate Gauge at High Voltage

    Part Number: BQ34Z100-G1 Other Parts Discussed in Thread: BQ34Z100 , BQSTUDIO , BQ34Z100EVM The BQ34z100 supports charge and discharge currents up to 32 A, pack capacities up to 29 Ah, and pack voltages up to 60 V without significant modifications.…

  • [FAQ] BQ34Z100-G1: Current/Capacity Scaling

    Part Number: BQ34Z100-G1 Other Parts Discussed in Thread: BQSTUDIO The gauge can support charge and discharge currents up to 32 767 mA if you want to scale the current with a desired scale, the scale must between 1 to 10 for optimal accuracy. The SCALED…

  • [FAQ] BQ34Z100-G1: Design Energy above Maximum

    Part Number: BQ34Z100-G1 The maximum value for the Design Energy parameter is 32767 and in many high voltage battery configurations this value will be exceeded. In this case the parameter Design Energy Scale needs to be changed accordingly. Design Energy…

  • [FAQ] BQ34Z100-G1: Voltage Scaling for Odd Number Cell Counts

    Part Number: BQ34Z100-G1 Other Parts Discussed in Thread: BQ34Z100 , BQSTUDIO The BQ34z100 supports up to charge and discharge currents up to 32 A, pack capacities up to 29 Ah, and pack voltages up to 65 V without modifications. Using external and internal…

  • [FAQ] TDA4VM: Debugging SBL boot in RTOS SDK

    Part Number: TDA4VM Hi, I am trying to boot TDA4VM using SBL, but it does not work. Can someone please share a procedure debug the SBL.

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