Allegro has introduced a three-phase, sensor-less, brush-less DC motor controller for automotive use with engine cooling fans, and oil and water pumps. Called A4964, it works with external n-channel mosfets and is designed to work in systems where a small microcontroller provides communication to a central electronic control unit (ECU), plus intelligent fault and status handling. It provides ...
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from Electronics Weekly https://www.electronicsweekly.com/news/products/power-supplies/automotive-3%cf%86-sensor-less-brush-less-dc-motor-controller-2017-10/
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