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STK672 040GEVB STK672 050GEVB STK672 060GEVB STK672 Series Evaluation Board User s Manual ON Semiconductor http onsemi com Thick Film Hybrid IC Unipolar Constant current Chopper external Excitation PWM Circuit with Built in Microstepping Controller Stepping Motor Driver Sine wave drive EVAL BOARD USER S MANUAL Ge AY pe ANK ie mer TH i SR Z ae ET STC raoi we Sa 4 i mp iL in AHN tiiin YWZ e e Phe Be ii TYE ae le Figure 1 STK672 Series