BQ76925: State of Charge; Gas Gauging; Depth of Discharge?

Hi Swaroop,
1. The bq76925 will see all parallel cells as the same cell, as if it were one larger cell. Since they are in parallel they have the same voltage and will combine to have larger capacity. Depending on the interconnect they may provide higher current.
2. The bq76925 does not include a converter for current, it is an analog circuit with amp and multiplexer. The ability to determine a coulomb count from its output will depend on the ADC you attach.
3, 4, 5. The bq76925 is an analog front end device, it will not determine state of charge, gas gauging or depth of discharge. Those calculations would be determined by the measurements and algorithms implemented in your MCU.
6. The maximum current will be limited by the voltage range of the output, gain selected in the device and the sense resistor selected for the design. See table 2 in the data sheet for example currents.
7. The AFE does not include protection switching drivers, response to the current will depend on the MCU or comparator and switching circuit used. Typically a battery will not know if the load connected is an inrush or a fault and will respond with its designed threshold limits and delays. A product would have an inrush current limiter where appropriate. It would be possible to design a current limit into a battery, but that is not provided by the AFE.
The bq76925 allows measurement for the cells with system customization in the MCU, but gauging algorithms also required in the MCU. If less customizaton is acceptable and less algorithm development is desired, for 4 cells you might consider the bq4050 or bq40z50-R1 gauge devices

Thanks WM5295 for your valuable inputs.

I will consider all your thoughts while working on my design.

Thanks and regards!