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BQ35100: Maximum time of 'Data Update Phase'

user4867287
Intellectual 435 points
Part Number: BQ35100

Hi 

I need to know the maximum time for the 'Data Update Phase', i.e. time from bq35100 recognizes GAUGE_STOP() to G_DONE=1.

I am using EOS mode, please adress both flash cases (DF update and Lifetime update).

'R Data Seconds' will remain at 15 sec.

Kind Regards

Claes-Henry Aronsson

  • 0
    TI__Guru* 76230 points
    hi Claes.

    Rdata seconds accounts for all that. If you look at figure 6-2 in the TRM, you will see that lifetime updates is included in the stage between gauge stop and gauge done.

    thanks
    Onyx
  • 0 in reply to Onyx Ahiakwo
    Intellectual 435 points

    Hi Onyx,

    So, R Data Seconds include more than the time to take needed measurements for the kalman filter in the algorithm to function optimally?

    When I (the host) sends GAUGE_STOP() I also start a timer. The timer shall ensure that I do not wait for G_DONE=1 longer than necessary, since I need to power off (GE low) the bq35100 asap.

    I assume (please correct if wrong) that worst case (longest time) from host sending GAUGE_STOP() to G_DONE=1 is 'R Data Seconds' plus '128 x 8-ms conversion', i.e. 15 + 1.024 sec. Ok?

    Regards

    Claes-Henry

  • 0 in reply to user4867287
    TI__Guru* 76230 points
    Hi Claes,
    yes, That is ok.

    thanks
    Onyx