You are getting it better than the rest of the world. Power electronics is once of the last semiconductor niche where US has both the edge in already, and a prospect for future growth.

You have to thank your military for that. Military use power electronics is a giant market in USA, but it's also a very pathological one. US military buys simplest bucks and boost circuits (for non-engineers, those things amount to "power electronics 101") for few thousand dollars a pop.

Few months ago, I had a chat with BYD engineers about their own power electronics problem. The best China got domestically are few generations old IGBTs. E6 for example has a 89% efficient powertrain, as I was told. The only Chinese power electronics company on the road to SiC I know is IVCT, and I haven't seen them showing any life signs for quite some time.

They want to eventually do their own power electronics, or at least fully own it from the packaging/integration stage.

You can see how far Tesla went in Model S to Model 3 inverter design when they switched to SiC switches. Model 3's inverter is microscopic in comparison to Model S ones. And apparently, it's also more efficient at the same time, without any extra tricks used.