Hi,
I have a single-cell LiIon (900mAh) battery application, where the battery is embedded (always connected) in the system. I am trying to start gas gauging using bq27621-G1, I am using the TI evaluation module and Battery Managent Studio software.
I have the following problems/questions I need help with:
1) For an always connected embedded battery (with charger), the datasheet asks for a 10kOhm pulldown on BIN pin. When I connect this 10k, the part goes to sleep mode. I can't figure out why ?
2) In order for the uC to write a BATTERY_INSERT subcommand so that the device goes to NORMAL mode, Op Config [BIE] bit needs to be reset. I read the technical reference (http://www.ti.com/lit/ug/sluuad4c/sluuad4c.pdf) front to back, but I could not figure out what sequence of commands need to be issued to clear Op Config [BIE] bit so that I can issue BATTERY_INSERT subcommand.
Also, is there anything else I need to do for the fuel gauge to start operation (other than setting the capacity).
Thank you for your help!
Bertan