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

3.1.2 DRV3x Family

TI’s DRV32xx family of 3-phase gate drivers is designed for customers developing Functional Safety automotive motor systems. TI’s DRV32xx family includes devices tailored for 12-V and 48-V automotive battery profiles. The devices are available in both AEC-Q100 Grade 1 (-40°C to 125°C ambient temperature) and Grade 0 (-40°C to 150°C ambient temperature) qualified packages. These devices are developed using an ISO-26262 certified workflow and include additional diagnostic and monitoring features to enable system designers targeting ASIL ratings up to ASIL-D.

DRV32x gate drivers also come with additional supporting documentation to help enable system designers to achieve their targeted ASIL rating. The Safety Manual includes detailed explanations for the monitoring and diagnostic features assumed by the Safety Element Out of Context (SEOoC). The Safety Analysis Report includes a detailed Failure Mode Effect and Diagnostic Analysis (FMEDA) and FIT rate calculation for the device.

Figure 3-3 Simplified Schematic for DRV3205 Functional Safety Gate Driver