Nice logs!
Damn, how did you get to 150A? I thought I limited that to 120A max. Did you edit that and set it to 150A?
Looks like it’s heating up to 85C pretty quickly for you too, though at very high current.
BTW you can hold CTRL and click multiple things like Motor Current, Power, Temp, etc.
Thanks for the tip, will do ctrl in future logs for multiple data. Yes, 85° fast but the hill good uphill but as we can conclude, heat can be a limitation, good cooling in needed, at moment good heatsink and air flow. Will keep updating, i used hacked firmware from a friend that allow to put more than original values. I tried 150, I will go up 170a, max MOSFETs i think is 195a but that is to much near limit.
That’s awesome, and some serious amps from that controller.
I did a bit more reading on MOSFET ratings.
The MDP10N027 datasheet shows:
A blog on TI’s website says:
For instance the “package current rating” of the FET is for the most part, independent of ambient temperature, and is a function of the internal connections between the silicon die and the plastic package. Exceeding this value does not immediately guarantee that the FET will die, so much as prolonged use above this limit will begin to reduce the lifetime of the device. Failure mechanisms above this limit include but are not limited to wire fusion, thermal degradation of the molding compound, and issues cause by electromigration stresses.
We still would not recommend ever operating these devices over [the package limit] for any long duration of time. In the FET world, that means any current pulse longer than 100ms, above which can basically be considered DC.
I’m glad someone is experimenting and I’m really interested in the long term results, just know that you may end up with a hole in one of those mosfets if you push much past 120A 
That’s what I got when I did test against the wall for long time. One phase burned with big hole and little fire, phase cables still intact even after MOSFET steal melt., This is my second unity to make tests
I love everything about this! Keep dreaming big 
I forgot to ask, how many amps were you pushing when it burned up?
40a battery 120 phase and 20s, i think I have log from it, need to find it, i know it was making 120a phase at the moment, for long time(10/15sec)
I did the same test with 60/120A for a couple seconds and nothing burned.
Perfect, my experience was also after few tests, was not first one, temperature was ok btw.
This is a very early BETA unit and all VESC 6 after that batch have the swapped sort order.
Thanks, that eplains a few things…
Corrected my posts
It is actually the text that is printed in the wrong sort order. The pinout is correct.
We stated that in the manual for these devices.
10km/h increase with field weakening 20a in my setup. From 55 to 64 kph flat. Have log, hacked firmware till 160a phase, air cooled, rocking 100%, send log later today and graph
Looks like a manufacturing error with the wrong resistor in the voltage divider is causing the temperature problem. I see this on two 75100 units.
Hi guys,
i’m testing the 75/100 on an diy escooter like this:
Do you notice something wrong in my parameters?
Are you air cooling your 75/100?
Is your 75/100 is inside an enclosure or outside?
This scooter could be fun if i manage to reduce this temp.
Looks about right unfortunately. The controller is good for about 35 motor amps continuous with no cooling in my experience. It will do 100 amps, just not for very long. If you can’t do open air cooling, a powerful fan might work.
The controller will get to 80-85C before it thermal throttles, and it will continue to reduce power so it never goes over 100C. No issue riding it hot… you will just lose power when it overheats.
good job, but how can I load the unlimited FW? Has anyone been able to limit the speed? I only reach 60kmh with a 67v battery and a 1500w hub motor
Just so I 100% understand your right wiring diagram posted, all units were made the exact same the only thing floating out there is the wiring diagram has have different variants, is that correct?
