SLLA575 June   2022 DRV10987 , MCF8316A , MCT8316A

 

  1.   Abstract
  2.   Trademarks
  3. 1Introduction
  4. 2Design Challenges and Solutions
    1. 2.1 Minimizing Motor Startup Time
      1. 2.1.1 Align
      2. 2.1.2 Initial Position Detect (IPD)
      3. 2.1.3 Slow First Cycle
    2. 2.2 Improving Motor Speed Stability – Tuning Speed PI Controller
      1. 2.2.1 Auto Tuning
      2. 2.2.2 Manual Tuning
    3. 2.3 Improving System Efficiency by Minimizing Power Losses
  5. 3References

1 Introduction

Some of the common challenges in tuning a Sensorless Field Oriented Control-based Motor driver are minimizing motor startup time, improving motor speed stability, and system efficiency. Motor startup time is very critical in applications such as Medical CPAP blowers. With the MCF8316A, system designers can minimize the motor start-up time by configuring the motor start-up parameters. Motor speed stability is critical in applications such as washer and dishwasher pumps, residential fans, and so forth. The integrated speed control loop in the MCF8316A helps maintain a constant speed over varying load conditions. For integrated control motor drivers, temperature is often a critical design specification that cannot be violated. With the MCF8316A, system designers can minimize power losses by configuring PWM output frequency, slew rate and PWM modulation scheme.