I have used this part with gen 3 I7 ivy-bridge INTEL AV8063801149203 and was successful. For a new design, I need to use this DC-DC with a 5V source and not 12V source. Is this change trivial or hard? Do you have a reference design like this:
http://www.ti.com/tool/TIDA-00021
But that works from 5V, instead of 12V.