I am trying to build a bldc controller. I have the following schematic I should mention that for the gate drivers I used ir2101 ICs. Everything works fine but when I connect the motor (350w hoverboard motor, the VBAT+ is 36 volts) the motors spins but I have to disconnect it because the mosfets get really hot. Without the motor the mosfets don't heat at all.
Any suggestions would be appreciated.
EDIT: the problem was because of low side gates didn't turn off fast enough. If you have the same problem try to put an "anti-paralel diode" on the low side MOSFETS. The diode should be a Schottky one (fast diode).