Allegro MicroSystems has a three-phase brushless BLDC motor controller for use with N-channel external power mosfets. The AMT49413 can be used as part of three-phase motor drive systems with maximum supply voltages up to 50V. One feature of the devices is a charge pump regulator that provides adequate (>10V) gate drive for battery voltages down ...
Read full article: Three-phase brushless motor controller separates the mosfets
from Electronics Weekly http://www.electronicsweekly.com/news/three-phase-brushless-motor-controller-separates-mosfets-2017-03/
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