The MCT8316A provides a single-chip, code-free sensorless trapezoidal solution for customers driving BLDC motors for applications such as pedestal fans, vacuum suction motors, leaf blowers, fuel pumps, blowers, and so forth. With more than 50 parameters to tune, it can feel overwhelming and time consuming for customers to tune their motor and meet all system requirements. This application note provides an in-depth discussion of three of the most common design challenges with the MCT8316A and step-by-step guidance on how to address these challenges.
All trademarks are the property of their respective owners.
Some of the common challenges in tuning a Sensorless Trapezoidal Control-based Motor driver are minimizing motor startup time, acceleration and deceleration slew rate and improving system efficiency. Motor startup time is very critical in applications such as fuel pumps. With the MCT8316A, system designers can minimize the motor start-up time by configuring the motor start-up parameters. Acceleration and deceleration slew rate is critical in applications such as medical CPAP blowers. For integrated control motor drivers, temperature is often a critical design specification that cannot be violated. With the MCT8316A, system designers can minimize power losses by configuring PWM output frequency, PWM mode, ASR and AAR.