Other Parts Discussed in Thread: BQ24296
Hi,
I am testing a recently designed Lithium Ion Battery Pack Board with BQ24296 Charger, BQ27542 Fuel Gauge and BQ29701 protection IC.
In board/schematic ALL grounds are connected to CELL-.
In some of the boards , when I power up first time, voltage across Pack+, Pack- is zero (circuit is open) though have a fully charged battery. Once I short protection IC Mosfets momentarily , get voltages at Pack+, Pack- and it works normally afterwards. Protection IC works fine later and trips of OCD, UVV etc.
I hope this is not an expected behavior. Please suggest what could be wrong and how to take care of it.
Part of schematic is below. Would be great if you can review the schematic too. Will directly mail you.
Thanks,
Anil