SLVA654B June   2014  – March 2019 DRV8301 , DRV8301-Q1 , DRV8302 , DRV8303 , DRV8307 , DRV8308 , DRV8312 , DRV8323R , DRV8332

 

  1.   Hardware design considerations for an efficient vacuum cleaner using a BLDC motor
    1.     Trademarks
    2. 1  Suction Principle
    3. 2  Brushless DC Motors (BLDC)
      1. 2.1 Construction of BLDC Motors
      2. 2.2 Working of the BLDC Motor
        1. 2.2.1 Types of Control
          1. 2.2.1.1 Sensor Control
          2. 2.2.1.2 Sensorless Control
            1. 2.2.1.2.1 Sensorless Control: Using Zero Crossing of the Back EMF Signal
          3. 2.2.1.3 Calculations
    4. 3  Microcontrollers
    5. 4  Gate Driver and MOSFETs
    6. 5  Isolation
    7. 6  Power Management (6 to 60-V DC Power Supply)
    8. 7  CAP and QEP interfaces
    9. 8  Enhanced Controller Area Network (eCAN)
    10. 9  High-Resolution and Synchronized ADCs
    11. 10 DRV8323R
    12. 11 Feedback Stage
      1. 11.1 Torque or Commutation Loop
      2. 11.2 Speed Loop
      3. 11.3 Position Loops
    13. 12 Conclusion
    14. 13 About the Author
    15. 14 References
  2.   Revision History

4 Gate Driver and MOSFETs

Gate Drivers accept a low-power input from a controller IC and produce the appropriate high-current gate drive for a power MOSFET. A gate driver is used when a PWM controller cannot provide the output current required for driving the gate capacitance of the associated MOSFET. The gate driver turns the MOSFET on and off. Motor drivers can be constructed from discrete components, completely integrated inside an IC, or can employ both discrete and integrated components. TI has a wide range of discrete gate drivers such as the UCC27210, UCC27200, UCC27710, TPS28225, and UCD7201 device for this purpose. External MOSFETs such as the CSD88539, CSD88537, CSD18514, CSD18531, and CSD18533 device which are 60-V FETs can be used with pre-drivers such as the DRV8323R device. TI's DRV8312 and DRV8332 devices are pre-driver and FETs in an integrated package.