The two-phase Dm542 subdivided hybrid step engine driver adopts DC power supply 18-50v, which is suitable for driving a two-phase hybrid step engine 18-50v with a current less than 4.0a and an external diameter 42-86 mm. driver uses the current AC server driver loop to control the subdivision. The engine torque fluctuation is very small, the low speed operation is very stable, almost without vibration and noise, and the high speed torque is much larger than the other two-phase unit, and the position accuracy is high. packing machines and other high resolution equipment.