Other Parts Discussed in Thread: BQ34110, BQSTUDIO, BQ34Z100-G1
Hello,
I am using the BQ34110EVM with high capacity PbA batteries. I know how to scale the current/capacity, but I am not sure how to change data flash parameters to account for the size of a different sense resistor. I am bypassing the 0.01 Ohm resistor that comes on the EVM (to ensure the input voltage generated across the current-sense resistor does not exceed ±125 mV), but I can't figure out how to tell the BQ34110 that the sense resistor is a different size.
I think it has something to do with the factory calibration (chapter 5 of the bq34110 user manual), but I am not clear on the meaning of the CC Gain, CCDelta, and CC Offset parameters.
I found this thread: It appears all I have to do is apply a known current, use bqStudio to calibrate the current, and then CC Gain and CC Delta will be automatically updated to reflect the value of the new resistor: is this correct? What about when I scale the current because of my high capacity application: wouldn't this alter the data flash parameters for CC Gain and CC Delta and negate the previous actions?
Thanks.
Mark