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BQ34Z100-G1: Remove Digital Temperature Control

BatMan
Expert 1232 points
Part Number: BQ34Z100-G1
Other Parts Discussed in Thread: BQ40Z50-R2

Hi,

I know there is no spec provision for updating temperature digitally. However, I would like to know if there is a way to update

internal or external temperature value digitally (via a flash update for example). Or this a firmware revision that may allow this as a command?

Having a the capability for a remote digital temperature sensor could be an added selling point for this component.

Can you help me in this regard? It is very important for my application. I have a remote sensing element that is not analog.

-Tim

  • 0
    Expert 1232 points
    I meant the title to be "REMOTE Digital Temperature Control" .. oops
  • 0 in reply to BatMan
    Expert 1232 points
    Also, Can you tell me the difference between Functional Temperature Range and Operating free-air temperature range , as specified in the specification Absolute Maximum Ratings?
  • 0 in reply to BatMan
    Expert 1232 points
    And finally, can you discuss what are the consequences of setting Trise = 0 and Time Constant to 32767 (disabled)?
  • 0 in reply to BatMan
    TI__Mastermind 25955 points
    Hi Tim,

    Updating the temperature digitally would be a great feature for the bq34z100-G1. I have passed you advice along to the systems team for future device definition.

    There is currently not a firmware release for the bq34z100-G1 device that allows setting temperature as a command, however, sending temperature digitally from a host MCU is a feature on the bq40z50-r2.

    As for the other questions:

    T Rise is the thermal rise factor that is used in the single time constant heating-cooling thermal modeling. If set to 0, this feature is disabled and simulations in the IT algorithm will not account for the self-heating of the battery cell. This feature defaults to 0 (disabled).

    T Time Constant is the thermal time constant that is used in single time constant heating-cooling thermal modeling. When set to 32767, the feature is disabled and simulation in the IT algorithm will assume no self-heating of the battery cell. This feature defaults to 32767 (disabled).

    Sincerely,
    Bryan Kahler