Making an esc better?

[suicideneil]

Tee-hee, mad science is the best kind.

[zeropointbug]

Related to your ESC-
a. Why you need heatsink at all? - So I can use it for almost any application, and stress it all I want, without it complaining.
b. How much power you need to dissipate? -Easily 2000watts peak handling
c. What temperature range of the ESC and FET's you would like to have?- Does this mean ambient temp? Or the operating temp? I would like to keep the FET's under 30F above ambient.
"How much power you think you dumping on ESC?"-Is this power output? Or heat output?

Related to future ESC-
a. What temperature range of the ESC and FET's you would like to have? (copy of "c")-Again, less than 30F above ambient
b. How long you would like your ESC to work continuous at 25%/50%/75%/100% load?- 25% Continuous, 50% Continuous, 75% 5 mins, 100% 1 min
"What kind of Amp ratings you would like to have from ESC and why?"- Psshh, 200 amps? I don't really want to draw any more than 100 amps, but the FET's will not be stressed, thus no need for heavy cooling.

[BrianG]

Originally Posted by zeropointbug

b. How much power you need to dissipate? -Easily 2000watts peak handling

You must mean power output? If an approx 90% efficient ESC needed to dissipate 2,000w, the output to the motor would be 20,000w!

[zeropointbug]

HEHE, what can I say, the questions aren't that understandable!

[GriffinRU]

MambaMax FET's driver has troubles driving my new FET board, so I will make new board with built-in drivers...
I will check my math again as well.

Brains side and FET's side

[lutach]

It looks very nice. Those FETs are really tough. I hope it works out. What are the specs on the FETs? What will the specs be after you are done?

[GriffinRU]

Originally Posted by lutach

It looks very nice. Those FETs are really tough. I hope it works out. What are the specs on the FETs? What will the specs be after you are done?

I like D2Pak-7 for package current ratings and there are versions for 40V and 75V.

[GriffinRU]

Originally Posted by zeropointbug

Related to your ESC-
a. Why you need heatsink at all? - So I can use it for almost any application, and stress it all I want, without it complaining.
b. How much power you need to dissipate? -Easily 2000watts peak handling
c. What temperature range of the ESC and FET's you would like to have?- Does this mean ambient temp? Or the operating temp? I would like to keep the FET's under 30F above ambient.
"How much power you think you dumping on ESC?"-Is this power output? Or heat output?

Related to future ESC-
a. What temperature range of the ESC and FET's you would like to have? (copy of "c")-Again, less than 30F above ambient
b. How long you would like your ESC to work continuous at 25%/50%/75%/100% load?- 25% Continuous, 50% Continuous, 75% 5 mins, 100% 1 min
"What kind of Amp ratings you would like to have from ESC and why?"- Psshh, 200 amps? I don't really want to draw any more than 100 amps, but the FET's will not be stressed, thus no need for heavy cooling.

I will try to answer in this thread (I missed that tread completely, will try to catch-up)

[GriffinRU]

New FET's, new layout...