Quote:
Originally Posted by NovakTwo
Tough crowd here.......
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Not being tough at all NovakTwo. Just like to be realistic and since Novak wants to be considered the leader in the Hobby, Novak should start setting some examples. This ratings game is over. This ESC probably has 18 FETs total correct? If so my calculation should be correct if you guys use the best ST Micro MOSFET or maybe you guys use some other PolarPAK style MOSFET from Vishay? The Vishay SiE874DF which is a 20V MOSFET has a TA rating of 52A at 25C degrees and if I use my calculation that should be a 156A rating, but we all know this little devices will never be able to dissipate so much heat if one actually sees 100A+ average. I would like to see some real world specs you know.
How do you guys come up with your ratings? Do you multiply 18 MOSFETs with 30A? If that's the way, I'm sorry to say it, but it's wrong. If you like to go with a 30A MOSFET then the max cont. burst should only be limited to 90A, but for a very short instant one can actually see a higher number depending on the voltage, motor, gearing, vehicle weight, rolling resistance, traction, tire size, aerodynamics and .....(Did I miss anything).