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TPS23758EVM-080: Theory of Q1 Operation

Part Number: TPS23758EVM-080

Hi Genius Folks!

In reference to the TPS23758-EVM, I'm making a board that pretty much follows the design.

I'm curious about how to understand the operation of Q1 (what is the role, and how do all those diodes drive the gate?)

I looked for Primary Side Control Flyback info, but usually I mostly only see D8+RC Snubber as part of the secondary side.    But all that other fancy Mosfet/diode gate stuff is new to me. (Can't mentally figure out the direction of current flow/stages of operation)

Is there a similar design I could read into to understand this architecture better?

Thanks a bunch!