SLOA293A September   2020  – October 2021 DRV8424 , DRV8426 , DRV8428 , DRV8434 , DRV8434A , DRV8434S , DRV8436 , DRV8436E , DRV8889-Q1

 

  1.   Trademarks
  2. 1Introduction
  3. 2Various Factors Affecting Stepper Accuracy
    1. 2.1 Mechanical Factors
    2. 2.2 Electrical Factors
      1. 2.2.1 Stepper Driver Channel-to-Channel Current Matching
      2. 2.2.2 Stepper Driver Decay Mode
      3. 2.2.3 Microstepping Levels
      4. 2.2.4 Stepper Driver Current Sense Accuracy
  4. 3Conclusion
  5. 4References
  6. 5Revision History

3 Conclusion

Positional accuracy of stepper motors can be a critical challenge for designers to overcome. But with the right motor driver, accuracy can be significantly improved by utilizing a number of different features. In addition to featuring best-in-class channel-to-channel current accuracy, motor drivers from Texas Instruments provide automatic decay mode control with smart tune technology, up to 1/256 microstepping, and high current sense accuracy to ensure smooth motion and highly accurate stepping. For more information on TI’s stepper motor products, see TI.com.