Hi, I want to integrate the BQ27220 in a new device, and i would like to make sure that my design is correct. So, i have doubt about the SRP and SRN configuration Pins. The datasheet sais the next:
"Coulomb counter differential inputs expecting an e
xternal 10-mΩ, 1% sense resistor. For systemside configurations, Kelvin sense connect SRP to the positive battery terminal (PACKP) side of the external sense resistor. Kelvin sense connect SRN to the other side of the external sense resistor with the positive connection to the system (VSYS). For pack-side configurations with lowside sensing, connect SRP to PACK– and SRN to Cell–. See the Simplified Schematic. No calibration is required. The fuel gauge is pre-calibrated for a standard 10-mΩ, 1% sense resistor"
So, if I have a Systemside configurations, I have to connect SRP to the positive battery terminal, SRN to the other side of the external sense resistor with the positive connection to the system... But In my design, what is VSYS?
I attachet my schematic design. Thanks to the comunity for your great work¡
