Allegro MicroSystems has announced a 3-phase sensor-less brush-less dc (BLDC) fan driver IC with sinusoidal outputs to minimise audible noise and vibration. A5931 on left, and conventional equivalent on right The chip, called A5931, includes output mosfets and a built-in control algorithm running on a state-machine – easing ASIL automotive qualification, claimed the firm, because ...
Read full article: PCIM: BLDC motor chip has built-in algorithm
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