I want to design a host-side gas gauge. The CPU will be TMS320F28335.
The battery wil connect to gas gauge when discharge, but disconnect when charge.
The battery pack I used is Tracer 12V 22Ah.
Type Lithium Polymer (LiPo)
Capacity 22Ah +/-5%
Max Continuous Discharge Current 10A
Max Peak Current (for 10mS) 30A
Nominal Voltage 12V
Discharge Cut-off Voltage 8.25V
Charging Voltage 12.6V
1. I have no idea between BQ34Z100-G1 and BQ27520-G4, which one is prefer?
2. If I choose BQ27520-G4, I think I shall divide the battery voltage to 3.0~4.3v, and then link into the BAT pin of BQ27520-G4. Is it OK?
3. "Since there is a solid correlation between the battery OCV and SOC, the OCV must be measured before the battery charging or discharging starts." It is the same consideration to BQ34Z100-G1 and BQ27520-G4?
4. In order to download Golden Image, I have to leave "SCL", and "SDA" pads connecting EV2300 to link PC, Is it right?
5. Can I calibrate and create Golden Image using EVM however My application is a host-side gas gauge?
6. It will lose precision if there is no learning-cycle, But how much loss?
