Even better, I designed an induction heater system, up to 400kHz at 650VDC. The switching edge was only 50ns. In an early prototype, we had the control board (at its heart, FPGA with 1.2V core, 2.5 and 3.3V IO) less than an inch away from the switching nodes of the inverter boards (a stack of boards, bolted together on standoffs, to share the current -- on the order of 100A total). The inverter boards were also an early prototype that suffered from 80% overshoot, ringing at 60MHz.
All the graybeards (the guys who designed the previous generations of controls, using 15V CMOS usually) thought it wouldn't work, because 1.2V is too small, even inside a chip. As is usually the case, this was a mistaken judgement not grounded in real measurements. (They didn't even have ground pours / planes on their boards. What were they thinking?) The control board worked perfectly fine (given our code inside it, which was constantly being debugged..). It was the gate drive cables that gave us trouble. (But alas, that signalling was one of many suboptimal technical decisions made by management that troubled our development.)
Tim