Load switches U2, U3, and U4 route the supply domains for the nRF9151 System in Package (SiP), nRF7002 Wi-Fi® 6 companion Integrated Circuit (IC), and the nRF5340 System on Chip (SoC) through the Nordic Thingy:91 X™ current measurement and debug board when it is inserted into the P9 connector.
The following figure describes the load switch circuitry.
Figure 1. Load switches for current measurement board bypass
