SLVSD02D March 2015 – June 2019 TPS65982
Figure 20 shows the configuration when the TPS65982 is acting as a source for the external switch path. The external FETs must be connected in a common-drain configuration and will not work in a common source configuration. In this mode, current is sourced to VBUS. RSENSE provides an accurate current measurement and is used to initiate the current limiting feature of the external power path. The voltage between SENSEP (PP_EXT) and SENSEN (VBUS) is sensed to block reverse current flow. This measurement is also digitally readable via the ADC.