Recent content by hightechasshole

Just a quick update on this: I completely re-did the layout, brutally optimizing for making all high current loops as tiny as possible & putting lots of ceramic capacitance as close to the FETs as possible. The trade-off is that wiring is kind of a pain in the ass. I also went for 6 layers 2oz...

Ouch. That's what I also don't understand. The ground trace (the one Jrbe mentioned) is still intact. I know it doesn't look like it, but that's only burned solder mask, probably due to the heat right next to it. I think the firs thing that went was probably either the outermost via or the...

Soo. Took a bit longer to get the PCB's and do some tests, here are the results (and new questions): I ordered 2 controller boards and 5 power stages. I killed the first power stage by sending ~30V to the drivers (I ran off 12V lab power supply, connecting 12V and VBATT together. Of course...

Thanks, I added a VCC and GND plane on the inner layers, ripped out ~220uF of ceramic (leaving 80uF, which I can reduce further if necessary), and added 1980uF electrolytic (9 caps). I hope to get away with only one capacitor PCB like that. I'll also bodge in 10-20 1uF caps on the backside of...

OK, I was under the impression that my ceramics were close enough inductance wise, but I can easily add a few 1uF 1206 on the bottom of the power stage PCB between the two supply planes. I guess that's close enough? Because to place them on the top would require basically starting from scratch...

Hello I've been a silent reader here on-and off for a few years - and have been working on my first ESC project now. I'm an absolute beginner in regards to power electronics (unless you include blowing shit up with a capacitor bank :P ) - but i've tried to avoid the common mistakes, design a...