SLVAFZ0 November   2024 DRV8161 , DRV8162

 

  1.   1
  2.   Abstract
  3.   Trademarks
  4. 1Introduction
  5. 2Three-Phase Gate Driver
    1. 2.1 Architecture
    2. 2.2 Layout Considerations
      1. 2.2.1 Advantages
        1. 2.2.1.1 MCU to DRV Signal Routing
        2. 2.2.1.2 Component Reduction
      2. 2.2.2 Challenges
        1. 2.2.2.1 MOSFET Placement
    3. 2.3 Typical Applications
  6. 3Half-Bridge (Single Phase) Gate Driver
    1. 3.1 Architecture
    2. 3.2 Layout Considerations
      1. 3.2.1 Advantages
        1. 3.2.1.1 MOSFET Placement
        2. 3.2.1.2 Independent Control
        3. 3.2.1.3 Ease of Replacement
      2. 3.2.2 Challenges
        1. 3.2.2.1 Longer Routing Between Gate Driver and Micro Controller
        2. 3.2.2.2 Additional Component Requirements
    3. 3.3 Typical Applications
  7. 4Summary
  8. 5References

2.2.1.2 Component Reduction

A three-phase gate driver uses same capacitors for major power signals for all three phases for example, PVDD, V-Drain, charge-pump, and so on. Therefore, there is a reduction in a number of components needed.