The TPS548D26 device offers true differential remote sense function which is implemented between the FB pin and GOSNS pin. The output of the differential remote sense amplifier is internally fed into the control loop and does not come out to a package pin.

Differential remote sense function compensates a potential voltage drop on the PCB traces thus helps maintain VOUT accuracy under steady state operation and load transient event. Connecting the FB voltage divider resistors to the remote location allows sensing the output voltage at a remote location. The connections from FB voltage divider resistors to the remote location must be a pair of PCB traces with at least 12 mil trace width, and must implement Kelvin sensing across a high bypass capacitor of 0.1 μF or higher on the sensing location. The ground connection of the remote sensing signal must be connected to the GOSNS pin. The VOUT connection of the remote sensing signal must be connected to the VOSNS pin and the top feedback resistor R_{FB_top}. To maintain stable output voltage and minimize the ripple, the pair of remote sensing lines must stay away from any noise sources such as inductor and SW node, or high frequency clock lines. TI recommends to shield the pair of remote sensing lines with ground planes above and below.

The recommended GOSNS operating range (refer to AGND pin) is −100 mV to +100 mV. In case of local sense (no remote sensing), short GOSNS pin to AGND.