SLVAES8A May   2020  – February 2026 DRV8424 , DRV8424E , DRV8426 , DRV8428 , DRV8428E , DRV8434 , DRV8434E , DRV8434S , DRV8436 , DRV8436E , DRV8889-Q1

 

  1.   1
  2.   Abstract
  3.   Trademarks
  4. 1Introduction
  5. 2Details of the Test Setup
  6. 3Sources of Noise in a Stepper Motor
    1. 3.1 Magnetic Noise
    2. 3.2 Mechanical Noise
    3. 3.3 Electrical Noise
      1. 3.3.1 Effects of Current Ripple and Decay Mode
      2. 3.3.2 Effects of PWM Chopper Frequency
      3. 3.3.3 Effects of Current Zero-Cross Error
      4. 3.3.4 Effects of Step Resolution and Step Frequency
      5. 3.3.5 Effects of Resonant Frequency
  7. 4Summary
  8. 5References
  9. 6Revision History
Application Note

How to Reduce Audible Noise in Stepper Motors