Quote:
Originally Posted by lutach
The engineer will send me a 100A controller that handles 7S lipos. He said he didn't have the FETs for a 10S controller. I also posted thin information in rumrunnerracing.com and one member there mentioned he has a true 150A continuous controller and he said mine will only do 95A. Here is the link: http://www.rumrunnerracing.com/fefor...ad.php?t=23246 please look at the 17th and 18th post. I might not be as smart as that guy, but I know the copper traces and FETs will never be able to put out 150A of continuous current. It would also take a really complex cooling system to keep a FET cool at 150A continuous duty. Like I said in that thread, I don't want to sound rude, but I'm doing something for us car guys and I can't have someone ruin this right now.
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Interesting discussion down there...
Serious gaps in calculating and estimating FET's performance and do not worry about PCB traces, for serious currents adding copper bars solves the problem.
Most FET packages (TO220/262...) not rated to deliver what die itself can.