Motor Driver

We delivered a robust, CAN-controlled, sensorless BLDC controller design for our client.

Brushless motors are desirable from the standpoint of efficiency and durability in many applications. However, because they do not have a built-in commutation mechanism (no brushes / commutator) they require position feedback and electronic control. For this application we did a sensorless commutation design that uses back-EMF from the motor windings to determine the commutation points. The advantage is a simpler motor design. The sensorless motor has three winding leads. A motor with Hall-effect position sensors adds 5 more leads: power, ground, 3 halls. Sensorless isn't right for every application, particularly for slow running or motion control, but for this application, it was perfect.

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About Us

DEB Associates helps companies through the entire electronics design process. Our team is smart, reliable, and deeply knowledgeable about the intricacies of circuit design, PCB layout, and EMC.

DEB Associates 2020