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BQ33100: Data Flash parameters description missing

Shivani Sadare
Prodigy 50 points
Part Number: BQ33100

Hello,

In bq33100, table no. 62 mentions the Data Flash Values.

There are some parameters in this table for which there is no description in the datasheet.

I want to know the significance of these parameters:

1. Init Safety Status

2. Learn Delta Voltage.

3. Cap Start Time

Also, to what values should we configure these parameters?

  • 0
    TI__Genius 14985 points
    Hi Shivani,
    Our expert on this device is not available today, but please expect a response this week.
  • 0
    TI__Mastermind 25955 points
    Hi Shivani,

    1. InitSafetyStatus is updated with the current safety status in normal mode and on full reset SafetyStatus is initialized with the value stored in InitSafetyStatus. Default value is 0000.

    2. Please refer to figure 5 of the datasheet. Learning occurs during discharge after charging to vlearnmax and the learn delta voltage is the voltage drop required for learning the gauge. The default is 500 mV which is usually ideal. Please size your learning load using the recommendations of this app note: www.ti.com/.../slua751.pdf

    3. Please refer to figure 1 in the bq33100 data sheet. Cap Start Time is the time between points A and C. This delay insures that we will be well into the linear region before initiating data acquisition of the line from points C to D. There is generally no reason to change the default value

    Sincerely,
    Bryan Kahler