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Original question:

BQ78350-R1: Short Circuit in Discharge Protection

BQ78350-R1: Protection Thresholds

Jeffrey Wright
Expert 2875 points
Part Number: BQ78350-R1
Other Parts Discussed in Thread: BQ78350

Hi Matt;

1). Is my understanding correct that when programming the 78350 protection thresholds, these are the SAME values that it will program the 769x0 AFE? In other words, is it possible to set thresholds in the 769x0 which are different than those in the 78350?

2). Is there means of reading CellVoltage1 - CellVoltage4 in a single I2C transaction, or must I read them one at a time?

Thanks!

  • 0
    TI__Guru* 81034 points

    Hi Jeffrey,

    The values for the AFE registers that are programmed to the BQ78350 will be written to the AFE. The BQ78350 also has non-AFE thresholds that can be enable in addition to the AFE protections. I do not know if it is possible to program different thresholds to the AFE after the BQ78350 has initialized the AFE registers as I have never tried this, but I do not recommend this.

    I think it is possible to do a block read of the cell voltages using this block access command:

    ManufacturerAccess() 0x0071 DAStatus1

    Best regards,

    Matt