Nice. You might find these articles (from 2012) useful:
"Apple iPhone charger teardown: quality in a tiny expensive package"
"Tiny, cheap, and dangerous: Inside a (fake) iPhone charger"
"A dozen USB chargers in the lab: Apple is very good, but not quite the best"
"Macbook charger teardown: The surprising complexity inside Apple's power adapter"
Patent: Flextronics Integrated power converters