Put all ingredients into the Instant Pot and cook on High for 5 minutes. Allow the pot to sit undisturbed for 10 minutes. After that, release pressure. If you start to see sputtering and spewing from the valve, close the valve and try again in 5 minutes.
Cook all ingredients together until the tomatoes are soft and bursting. Remove from the pot and use an immersion blender to mix all the ingredients together and get a smooth soup.