SLVAES1A June   2020  – May 2022 DRV8300

 

  1.   Trademarks
  2. 1Motor Considerations and Why Brushless DC Motors?
  3. 2Motor Driver Architecture
    1. 2.1 Gate Driver vs Integrated FET Driver: Power, Voltage, and Current Requirements
    2. 2.2 Three Use Cases: Speed, Torque, or Position:
    3. 2.3 Control Methods: Trap, Sine, or FOC
      1. 2.3.1 Trapezoidal
      2. 2.3.2 Sinusoidal
      3. 2.3.3 Field-Oriented Control
    4. 2.4 Sensored Versus Sensorless
      1. 2.4.1 Sensored
      2. 2.4.2 Sensorless
    5. 2.5 Current Sense Amplifiers
    6. 2.6 Interface
    7. 2.7 Power Integration
    8. 2.8 100% Duty Cycle Support
  4. 3Texas Instruments' Brushless-DC Motor Drivers
    1. 3.1 Gate Drivers: DRV8x and DRV3x family
      1. 3.1.1 DRV8x Family
      2. 3.1.2 DRV3x Family
    2. 3.2 Integrated MOSFET: DRV831x Family
    3. 3.3 Control and Gate Driver: MCx Family
    4. 3.4 Full Integration: MCx831x and DRV10x Family
      1. 3.4.1 MCx831x Family
      2. 3.4.2 DRV10x family
  5. 4Conclusion
  6. 5Revision History

2.2 Three Use Cases: Speed, Torque, or Position:

Motor Drivers are typically used for three applications that are well suited for specific motor driver architectures. As discussed in Section 2.1, the power, voltage, and current determine whether a gate driver or integrated FET driver architecture is best. The next consideration is whether or not to integrate control depending on one of the three following use cases and their typical applications:

  • Speed: the motor should maintain a variable or consistent speed
    • Appliance fans, vacuum cleaners, laptop cooling fans, blowers, ceiling fans
  • Torque: the motor should be used to apply a force
    • Power tools, electric bikes, automated doors and gates, power seats, smart locks
  • Position (servo control): the motor should move to a certain position, be able to hold the position and move back and forth
    • IP Network Camera, drone gimbal, collaborative robots, HVAC damper

Figure 2-2 highlights the relationship between the three use cases and their corresponding architectures.

GUID-CA0A3CF7-9058-4B8C-AF78-DB0EB7798AB4-low.gif Figure 2-2 Comparison of Three Use Cases