Quote:
Originally Posted by micke_b
Could you? ;-)
Also did you find out what MCU they are using? I know that the Mamba Max I have is using: C8051F320. But I think this one looks different. Do you have the part number for it?
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Hmmm, why don't you ask me, since I designed the MM Pro?
And why are you so interested in the particulars?
Since you can find all this out yourself with a little research (and I really don't care if you know--)
FET drivers are commodity items now, everybody makes one -- and they all work very well (except for a few notable exceptions...)
The FET drivers are Intersil ISL6700IB. The processor is a Silabs C8051F367 at 50 mips.
The MOSFET is an NTMFS4933 (about 1.3 milliohm.)
(the NTMFS4933 isn't yet released to the public, and datasheets won't be available online until late January, early February. Castle gets the first run of wafers.)
NTMFS4108, BSC014N03s and BSC019N04s are suitable substitutes we may use if availability becomes a problem. (we use a half-million FETs a month, so sometimes we have problems with availability...) There isn't a significant difference in performance with any of these other FETs -- BUT, we do have to change the drive circuit values.
BTW BrianG: The production version shows almost no difference in performance between these different FETs -- the original Beta had an issue with drive speed on the 4108s -- the 4933 version you got had the issue corrected. Once the drive is correct, the different FETs have almost no performance difference.
Anything else you want to know? The switcher chip is an LTC3824 (Linear Tech), with an AO4421 (Alpha Omega Semi) external FET. The main inductor is from NIC. We are using a novel circuit to give variable programmable output voltage on the BEC switcher (I'm not going to give you details about how that works -- figure it out yourself!)
We are using a variable gain back-emf detection circuit. (Figure that one out yourself too!)
The fan and sensor connectors are from JST, and are not chinese clones of the JST part.
We use a TPS76133 (TI) regulator for main processor power (3.3V) -- And there are four total power supplies on the board (including the BEC supply.)
That about does it. Now if you want, you can run over to Novak, or Tekin, or LRP, or HobbyWing, or whoever and let them know. Good luck.
Patrick