BLDC brushless DC motors with advantages of high efficiency, small size and high controllability have widely replaced traditional AC motors. The traditional AC motors can only operate at a constant speed and cannot be adjusted for many application scenarios, resulting in high energy consumption. However, the algorithm required for the BLDC control is complex, which makes many engineers reluctant to switch to a BLDC design.Richtek's BLDC motor driver solutions make motor control extremely easy. We offer both software and hardware integrated solution with unique sensorless field-oriented control (FOC) algorithm to provide the start-up and on-the-fly starting strategies. This makes motors run smoothly in the full speed range and still saves energy.
The Hall effect sensor is a common method of determining rotor position from the detection of permanent magnets in conventional BLDC motors. This method has its disadvantages: the noise level highly depends on the accuracy of assembly procedure. Moreover, its control algorithm is too simple to respond to different applications, such as on-the-fly start-up.Richtek's sensorless FOC algorithm can eliminate the use of Hall sensor components. It is easy to maintain and cost-effective. Our products have also passed the complete certification of IEC-60730, helping designers to reduce time-to-market and the cost when applying for UL and CE certification.
Want to know more about the advantages of Richtek’s BLDC solutions?
Please see the video to find out motor driver performance tests.