Im using the SmoothieBoard as my controller and need 2.5us pulses. I would like to use my nema 34 steppers that are rated are 6 wire stepper and rated at

Current(amps) 4.67
Voltage(Vdc) 1.78
Resistance(ohms) 0.382
Inductance(mH) 1.88

with help from the CNC Zone I know I need 43.88V - I have some 48 V

DC chargers for an old ups system that are rated for 50 amps that I was thinking of using and would like to know what LeadShine drivers you would recommend

thanks