Other Parts Discussed in Thread: CSD83325L
Hi,
We are evaluating battery protection designs for a new wearable device and are currently considering using the BQ29700 coupled with the CSD83325L (similar to the TIDA-00712 reference implementation).
Question: In the Protection section of the TIDA-00712 Schematic/Block Diagram, what is the role of the resistor R26? R26 is a 0.56 Ohm resistor placed in series with the source of the CSD83325L MOSFETs. Is this used (along with the Rds(on) of the MOSFETs) to tune the over-current (charge and discharge) trip-point to be within the bounds of max allowable current for this battery/system? Or is it present for some other reason?
Thanks in advance,
Michael