Castle - Make A Special Edition Monster - RC-Monster Forums

BrianG · 06.07.2008, 06:23 PM

Quote:

Originally Posted by Pdelcast

OK, well 200A and single layer FET board would be REALLY BIG. It would take about 108 FETs to do 200A reliably (same number of FETs as the Phoenix-110HV.) or about 2.5" square with 6x5mm FETs (about 6 sq in of board.)

What I'm working on now is the same footprint as the MMM -- but with 72 HV FETs (36 per side) and stackable. Would be good for about 130-150A in single layer, 225A or so in double layer using our newest FETs. (If we can drive that many of them without creating too many issues.)

Patrick

Yeah, I didn't think it would be easy or small or even practical. It was a "wish list" after all, not an "easy wish list".

TBH, the 200A+ and 20s capability is a tad overkill for most setups (maybe the 5th scales). But it sure would be neat to use an ESC like that in an e-bike or something.

And about "robbing" the parts, I was referring more to taking what already works and has been tried and true (like the MM brains) and experimenting with the power section. Just an idle thought. I know what it's like to have something you design be stolen, but it was not my bread-n-butter so it didn't matter so much.

Pdelcast · 06.07.2008, 06:35 PM

Quote:

Originally Posted by BrianG

Yeah, I didn't think it would be easy or small or even practical. It was a "wish list" after all, not an "easy wish list".

TBH, the 200A+ and 20s capability is a tad overkill for most setups (maybe the 5th scales). But it sure would be neat to use an ESC like that in an e-bike or something.

And about "robbing" the parts, I was referring more to taking what already works and has been tried and true (like the MM brains) and experimenting with the power section. Just an idle thought. I know what it's like to have something you design be stolen, but it was not my bread-n-butter so it didn't matter so much.

Well, what I was talking about above was for a 12S design, not 20S. We do have the SHV controller which is good for 20S, but it gets very expensive very quickly to do 20S.

The SHV-250 is 20S, 250A and a BIG footprint (close to 3"x6")

And I'm not kidding about robbing the brain boards -- no zombies here! I don't even like the thought of robbing a brain board 'cause they are soldered down on the power board as a hybrid, and it would really difficult to remove without damaging / destroying it.

I'll be changing the MMM control board design to take it from 26V maximum usable voltage to 54V maximum usable for the MMMM (or 4xM? Mega MAX? M-quad? B.F.E.S.C.?)

pb4ugo · 06.09.2008, 12:17 AM

Quote:

Originally Posted by Pdelcast

Well, what I was talking about above was for a 12S design, not 20S. We do have the SHV controller which is good for 20S, but it gets very expensive very quickly to do 20S.

The SHV-250 is 20S, 250A and a BIG footprint (close to 3"x6")

And I'm not kidding about robbing the brain boards -- no zombies here! I don't even like the thought of robbing a brain board 'cause they are soldered down on the power board as a hybrid, and it would really difficult to remove without damaging / destroying it.

I'll be changing the MMM control board design to take it from 26V maximum usable voltage to 54V maximum usable for the MMMM (or 4xM? Mega MAX? M-quad? B.F.E.S.C.?)

That one has my vote!