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Old 09-29-2009, 12:39 PM   #2319 (permalink)
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Originally Posted by MPaulHolmes View Post
Then eventually I'm going to take about 12-15 of the new fancier 230amp 200v mosfets, and do a synchronous rectification version, so the freewheel mosfets will have way more current carrying capacity than what I'm using now. I think that one will do 1000 amps.
I'm trying to follow how you'd get more current with less switching devices... It boils down to heat, right? Keep it cool, push more current. So, with multiple gate drivers and sync-rect you can switch faster to minimize switching losses (at the risk of higher voltage spikes). Also, the rectifying mosfets should be a bit more effecient than their diode counterparts, particularly at lower currents.

That sound right?
ReVolt AZ testing thread:
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