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BQ76952: TRM errata?

Part Number: BQ76952
Other Parts Discussed in Thread: BQSTUDIO

Hello,

Please refer to page 112 of the BQ76952 Technical Reference Manual, PDF here:

      https://www.ti.com/lit/ug/sluuby2a/sluuby2a.pdf

SubCommand 0x0075 describes the temperatures as being reported in units of a tenth of a degree Kelvin.  I believe this is in error, the correct units are a tenth of a degree Celsius.

Please confirm.  And if I'm correct, please update the doc -- this is confusing.

Best regards,

-david

  • Hi David,

    I'm not sure why you think the TRM is not correct. Here is an example reading of this register below.

    First let's look at the BQStudio registers window to see the TS1 temperature reported. This reported value is converted using a formula by the BQStudio software to display in degrees Celsius.

     

    Next let's read the value from the TS1 Temperature command 0x70. The value reported is 0x0BB3 which is 2995 decimal (299.5 K = 26.35 C)

    Finally, let's read from DASTATUS5 0x0075 which is a 32 byte register. From the reading below, I see that that the Avg Cell Temperature, Max Cell Temperature, Min Cell Temp all read 0x0BB5 which is 2997 decimal (299.7K = 26.55 C)

    Best regards,

    Matt

  • My bad!!!  Thanks.