hello
My application is IOT style, and has long periods of low current and short pulses of high current.
I'm checking the bq27220 to be a coulomb counter for my applecation.
I have few questions about dealing with short or very high pulses with the gauge:
- What is the bq27220 ability to detect short pulses?
from which width the gauge might miss the pulse?
In addition, we want to put a capacitor in parelel to Rsense to average the current, for dealing with high pulses (that will cause a bigger voltage drop then permitted)
- Can we add this capacitor in parelel to Rsense without damaging the gauge proper operation?
- Do you have any recomended design, or guidelines for this design?
And finally, I understand that the gauge 'wake up' is depand on the 'current' register, and not on the 'average current' register,
- what is the 'wake up time from sleep' of the device?
I could found the 'wake up time from shutdown', but not the time from sleep (check both in the datasheet and TRM)
thank you very much
arnon
