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bq27421-G1B load mode and load select

K. Sasaki14
Guru 10200 points

Load mode=1, and Load select=1 in bq27421-G1B default setting.
In my feeling for previous gas gauge devices, I think Current model (Load mode=0) is set as a default. Why is power model set as a default in bq27421?
Our customer use their battery for MCU etc..., so I think this is current model and I think current model is standard.
What is your recommended setting?

Best Regards,
Kohei Sasaki

  • 0
    TI__Guru 61516 points
    As this is used to simulate remaining capacity, I recommend setting load mode to match your customer's system characteristics. If the system has a dominant load current that doesn't change with voltage then set this to Current, if the load is typically a constant power (current increases with lower battery voltage), then set this to Power.