zombiess
10 MW
liveforphysics said:Gate drive and trace layout is maybe 90% of what makes a controller.
Hehe, I just updated the 18 FET power stage thread. During desat testing I saw just over 1000A at 64v with a 200uS pulse into a dead short and 750A into a 5uH coil. 750-800 is where I want my desat to trigger so I'll need to tweak my zener diodes a bit.
A kiloamp at 64v is impressive, but I was just playing around while testing. I knew I was within pulse spec of the parallel MOSFETs and I know they current share well due to how I matched them, but it's not something I recommend doing. I had a plastic shield over the power stage... just in case.
Sending a 5% DC 19khz pulse at 64v into the 5uH coil made from 10 guage produced a much stronger magnetic field than I expected (I was happy, magnets are awesome!). Hope I didn't wipe a credit card mag stripe.