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

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-supply-quarter-size-traditional-models/ 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...