Hello,
In a system that incorporates an nPM1300 (PMIC), we draw large amounts of current from our battery for certain portions of our circuit, and we must bypass the PMIC for this portion of the circuit. Specifically, we have a high-current DC/DC circuit which has its input directly connected to the battery (bypassing the PMIC, and the VSYS output), however, the rest of the system runs off of the PMIC output (VSYS). Because of this bypass, we must measure/estimate the battery current draw of this DC/DC circuit independently of the PMIC battery-current measurements, and feed this independent measurement to the fuel-gauge algorithm.
The question is: Is there any precedent for doing this? Is it expected that this would succeed or fail, with regards to getting accurate fuel-gauge information?
Thank you,
Ted
