SLLA567 August   2021 MCF8316A , MCT8316A

 

  1.   Trademarks
  2. 1Introduction
  3. 2Concept
    1. 2.1 Optimizing acoustics with sensorless field-oriented control motor driver (MCF8316A)
      1. 2.1.1 PWM Modulation Schemes
      2. 2.1.2 Dead time compensation
      3. 2.1.3 Comparing audible noise before and after optimizing acoustics with MCF8316A
    2. 2.2 Optimizing acoustics with sensorless trapezoidal control motor driver (MCT8316A)
      1. 2.2.1 120° Trapezoidal commutation Scheme
      2. 2.2.2 Variable commutation Scheme
      3. 2.2.3 Comparing audible noise between 120° commutation and Variable commutation with MCT8316A
    3. 2.3 Comparing acoustic performance between Sensorless FOC motor driver (MCF8316A) and 180° sinusoidal motor driver (DRV10987)
  4. 3Summary
  5. 4References

2.3 Comparing acoustic performance between Sensorless FOC motor driver (MCF8316A) and 180° sinusoidal motor driver (DRV10987)

As shown in Figure 2-10, acoustics noise is compared between MCF8316A and DRV10987 by measuring the audible noise in dBA at different motor electrical speeds with laptop fan motor. MCF8316A device delivers quieter motor operation by 2.71 dBA at 115 Hz compared to DRV10987 device. MCF8316A optimizes acoustic noise at lower speed with PWM modulation and dead time compensation techniques.

Figure 2-10 Audible noise comparison between MCF8316A and DRV10987