[neltnerb]

Not sure about high power, but the physical requirement for small size scale combined with the engineering goal of high current is usually contradictory.

I do absolutely think this could be awesome for lower power ultra tiny DC-DC converters though. For instance:

http://hexus.net/tech/news/psu/64161-finsix-laptop-power-sup...

is pushing to high enough frequencies so as to not need an inductor at all. Problem with high frequencies is that usually the efficiency drops, so there's a tradeoff. But if you can avoid the switching losses by moving to a transistor with higher operating frequencies, it might be quite good =)

Or the tiny size might work well for letting you do cool stuff like on-chip DC-DC conversion where you don't need an inductor because it's all so fast...