BQ41Z50: gg file Ra tables

Steve Widener

Part Number: BQ41Z50

Tool/software:

I am looking for a TI Application Note that explains the meaning of the different RA values from a gg file - where they explain what the Ra and Rb tables are and why we have so many tables

over 1 year ago

+1 Siddharth Venkatesan over 1 year ago

TI__Intellectual 2020 points

Hello Steve,

Rb tables are private parameters and are used to compensate for temperature.

The number of Ra tables used depend on the number of cells in the battery. For a 2s configuration, Ra0 and Ra1 will be used. Ra0x and Ra1x are used interchangeably to store the previous Ra0 and Ra1 values.

https://www.ti.com/lit/an/slua450a/slua450a.pdf

This goes over the basics of the impedance tracking algorithm.

Regards,

Siddharth

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BQ41Z50: gg file Ra tables