SLAU780 August 2018
To use an external 3.3-V source to power the EVM, connect the 3.3-V and GND lines of the supply to the 3.3V and GND pins of the external power header (J11). Disconnect the onboard 3.3-V LDO (U5) from the 3.3-V power rail by removing the jumper on JP8 to prevent back-powering the LDO. Figure 2 shows the location of JP8. If USB host functionality is required from the onboard USB-OTG connector, also provide 5 V to the board. Use the external 3.3-V and 5-V power option in Section 2.4.