Other Parts Discussed in Thread: BQ24076, BQ51052B, , BQ51013
Hello,
Can someone from TI applications please take a look at the attached schematic? It's devoid of any proprietary information. It's a wireless charging + fuel gauge IC solution. I haven't used the TI qi stuff before, and battery chargers are always more difficult than I expect.
Battery is a Samsung Galaxy Note4 battery:
- Nominal voltage 3.85V
- Capacity: 3.22mAh (12.4Wh)
- Charge: CC/CV, Charve voltage = 4.4V; Charging current=644mA max.
- End of charge current=32.2mA;
- Charging Temp=45C max.
I looked at using the BQ51052B (Integrated Qi receiver and battery charger) but this is only in a fine pitch BGA, and would require tighter layout than the rest of the board. So, I changed it to a BQ51013B qi receiver which then feeds a BQ24076 charger. Finally, there's a BQ27421 fuel cell IC for battery monitoring.
Thanks,
DerekReceiver.pdf