Tool/software:
Hello,
I've developed a calibration script based on on provided in https://www.ti.com/lit/an/sluaa32a/sluaa32a.pdf
I'm testing it on BQ76952EVM using cell simulator, I have Power supply which can deliver only up to 30V so the calibration voltages V1 and V2
are not really in the correct range but are 20.0/16 and 30.0/16 but still the math should work for them too.
It seems to work however the calibration params generated by the script are very different from those stored in the chip on the board.
Berore doing the calibartion i read the parameters from the chip:
Calibration Results Comparison: ---------------------------------------------------------------------- Parameter Old New ---------------------------------------------------------------------- Cell 1 Gain 12120 601 Cell 2 Gain 12120 601 Cell 3 Gain 12120 600 Cell 4 Gain 12120 600 Cell 5 Gain 12121 601 Cell 6 Gain 12121 600 Cell 7 Gain 12121 601 Cell 8 Gain 12121 601 Cell 9 Gain 12124 600 Cell 10 Gain 12124 601 Cell 11 Gain 12124 601 Cell 12 Gain 12124 601 Cell 13 Gain 12130 601 Cell 14 Gain 12130 602 Cell 15 Gain 12130 601 Cell 16 Gain 12130 601 Cell Offset 0 0 VDiv Offset 0 61 TOS Gain 33931 1056 Pack Gain 34275 1082 LD Gain 34340 1080 Board Offset 0 0 CC Gain 7.476800 7.476800 Capacity Gain 2230042.500000 2230042.463967 Internal Temp Offset 0 0 ----------------------------------------------------------------------
