Toshiba has announced a three-phase brushless dc motor driver with sensor-less sinewave control. The IC, called TC78B011FTG, is a ‘pre-driver’ in the company’s nomenclature because it needs six external mosfets wired as a three-phase bridge to switch motor current. Operation is from 5.5 to 27V, and the same IC can implement either closed-loop or open-loop ...

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