I looked at the datasheets for FAN7388, HIP4086. I like this option the best and I only need one of these driver IC's per motor right? along with the 6 n-channel Mosfets?
Between FAN7388, HIP4086 which one do you think is a better option for a 48v self balancing scooter and can you explain why?
Its your project, you have to decide these things really. They handle different
voltages, different levels of gate drive, come in different packages, have different
deadtimes, and the HIP4086 has a charge pump so can work with no PWM present
(unlike the vast majority of MOSFET drivers).
High power bridges and inverters are fraught with the risk of failure, it takes fractions
of a millisecond to _vaporize_ a MOSFET due to overcurrent, for instance, if shoot-through
happens. This means devices can explode if you get things wrong.
You need to start testing at lower voltages and current limits and use an oscilloscope to
monitor waveforms and check all is well before upping the power levels a step at a time.
With that level of power definitely use fast opto couplers in the logic signal paths to protect
your microcontroller should the MOSFET and driver setup go bang.
If you want an easier life buy a chinese hub motor controller.