Couple updates:

An audience member redid my brushless DC motor schematic in the traditional commonplace formatting which for most is easier/quicker to read and understand due to familiarity. So I'm reposting it. It looks mostly accurate although I have since added a 100nF ceramic capacitor between the gate and source of the highside mosfets to reduce ringing issues. Standard practice according to chatgpt. I also changed the LED color to orange because chatgpt said blue would show through the silicone skin more and add a cold inner glow and we want it to look like real skin so no blue.

As to why the highside mosfets get a 100nF ceramic gate capacitor but not the lowside, here was how chatgpt explained it to me:

-High-side MOSFETs:

Their source pin moves up and down with the motor phase (it’s not at a fixed potential).

During switching, the drain and source both move rapidly, and the gate voltage must track that movement precisely — any ringing or inductive noise can momentarily over-stress Vgs.

That’s why we add the small capacitor across gate and source: it tames that high-frequency ringing and helps hold the gate steady relative to its moving source.

Low-side MOSFETs:

Their source is solidly tied to ground, so the gate always swings relative to a fixed, quiet reference.

They don’t experience the same “floating” gate drive or large dv/dt transitions on the source pin.

So, the gate is inherently more stable, and you don’t need that extra 100 nF G–S capacitor.