Yeah, at a glance that's an easy assumption to make, but be assured it's all my own R&D - as my forthcoming discharger will be
. My Electrical Engineer has designed both from the gound up.
These are version two of my HCH1 IPU fan board that was done long before we traded a few parts behind the scenes. A quick glance at your PCB (first time I am closely looking at it, have intentionally not peeked) shows quite a few differences between our two solutions to the same problem.