Using Feature Branch development with SVN

I am trying to switch over to Feature Branch style development, wherein work on major new features is done in a branch, and am trying to figure out how to set up IDEA to work with this. Do I create a new project every time I create a new feature branch, or is there some way I should be able to check out the tree from SVN that will let me switch around between branches and the trunk as I work and let me merge back and forth as needed? Any advice or pointers would be greatly appreciated, through searching I was able to find pieces of the process, but not the starting point of setting up the project.