If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.
Your setup is not clear, but if you have a custom board running external regulator mode you can still use the XDS110 on the LaunchPad for debugging. If you look at the LaunchPad schematic you will see there are level shifters on the debug signals. Just make sure to provide your boards supply voltage to the level shifters (through VDD-Sense in the debug header).
