Welcome to Allegro’s A3987: DMOS Micro-stepping Driver with Translator training module. A historic area of focus and expertise for Allergro MicroSystems has been motor drivers for lower voltage fractional horsepower systems and applications. A particular emphasis for Allegro product development has been bipolar stepper continuation of this broad product offering, based on merging power, logic, and linear functions through Allegro’s BCD (Bipolar-CMOS-DMOS) silicon technology processes.