To anyone who may concern,
I am using BQ33100 for capacitance measurement. I found the results were different from time to time on the same capacitor.
If I send learn command to BQ33100 immediately after power on, I found the capcitor would charge and stabilize to a certain point which the charging current was no more than 40mA and it would start learning there. The result learned in this way is always smaller than the result learned when the charging current is less than 10mA after a long period of charge.
The capacitor measured is 10F in theory, if I charge it quite a long time then send learn command, the result is 8.8F; but if I send learn command immediately after power on, it is about 8.5F.
Any suggests on how to make it more accurate?
Besides, is there any source code in C available for evaluation?
Regards
Lu