tnks guys 
Tnks for the link also, they refer to great technical works but are pretty different from my goal, I want to make a sensored controller to use on a ebike. I used to run it on a sensorless rc controller, it worked great but with the (big) limit that I had to run it at about 10mph before the back emf was strong enough to make a sensorless controller work.
Is there any ic that can help me connecting a logic pin (arduino output) to the mosfet gate?
I think I could solve this issue using logic level gate mosfets, but seems I`m wrong 