Fuel Economy, Hypermiling, EcoModding News and Forum - EcoModder.com - View Single Post - Paul & Sabrina's cheap DIY 144v motor controller

duncan · 04-16-2013, 06:29 AM

Hi Paul

I have put 300km on my car - including a sprint - great fun,- I was not last (almost though)
Anyway I had better get onto fixing my controller,

I have been looking at using GiGamos MOSFETS as you suggested - IXFK170N20T
These are 170 amps rather than 130 amps
The gate charge is higher - 265nC rather than 241nC - only 10% more

I was thinking of using the same diodes and capacitors (new ones)

With these higher current MOSFETS I hope to be able to turn the motor current up to about 700 amps

I will also replace the MIC4451 - I hope I don't damage the control board!

Will I be able to use the current sensor or will I have to upgrade that as well

Or am I barking up the wrong tree altogether?

04-16-2013, 06:29 AM	#6074 (permalink)
duncan EcoModding Apprentice Join Date: Oct 2010 Location: southland NZ Posts: 153 Thanks: 38 Thanked 86 Times in 55 Posts	Hi Paul I have put 300km on my car - including a sprint - great fun,- I was not last (almost though) Anyway I had better get onto fixing my controller, I have been looking at using GiGamos MOSFETS as you suggested - IXFK170N20T These are 170 amps rather than 130 amps The gate charge is higher - 265nC rather than 241nC - only 10% more I was thinking of using the same diodes and capacitors (new ones) With these higher current MOSFETS I hope to be able to turn the motor current up to about 700 amps I will also replace the MIC4451 - I hope I don't damage the control board! Will I be able to use the current sensor or will I have to upgrade that as well Or am I barking up the wrong tree altogether?