I was exploring what efforts, if any, have been made in the realm of open source for microconverters. I found this set of blog entries made over a span of 3 days. I thought if anyone else is interested in what has been done in terms of open source, this post might be a good place to start...
They highly subscribed engineer "with the Swiss accent", Andreas Spies, looks into the claim about why microconverters are needed. I've found Andreas' YouTube channel to be worthy of an Ivy League education in electronics.
See his just-published (10/23/2022) video at: