May I please have help in searching for reference designs/papers for 48V, 24V, 5V or 3.3V GaN HEMT switching power supplies

Since this Slack workspace is for open source silicon, and I don't know of any exotic processes which are open source, this question is rather off-topic for this forum.

To learn about switching power supplies, I recommend the following textbook. "Fundamentals of Power Electronics" authors: Robert Erickson and Dragan Maksimovic publisher: Springer Science + Business Media, LLC

Thank you sir.