4 ms·
That idea has been proposed before, and we even looked into it. The problem is that on-die DC-DC converter efficiency and current per mm2 is generally way too l
by deepnotderp 7y ago
That idea has been proposed before, and we even looked into it. The problem is that on-die DC-DC converter efficiency and current per mm2 is generally way too low. Converters using inductors do better but getting high Q inductors on a chip at low area is difficult.
- baybal2 7y agoFirst Hi! Well is talk about DC-DC being made along with logic or with a separate analog process? With the second, chip scale bucks were certainly made. GaN grows on Si nicely, and ferrite-on-si is also a thing.
- deepnotderp 7y agoHey! GaN on Si could work, as could ferrite based inductors, but at least for the foreseeable future it doesn't seem like the incentive is enough to make it a wide scale thing. Probably heterogeneous integration stuff like say maybe chiplets, flip chip bonding, etc. might be the route if GaN converters get integrated.