SLVAFY3 January   2025 DRV8376 , DRV8376-Q1

 

  1.   1
  2.   Abstract
  3.   Trademarks
  4. 1Introduction
  5. 2Application Overview
    1. 2.1 Automotive 48V HVAC Valves and Actuators
    2. 2.2 Building HVAC Valves and Actuators
    3. 2.3 Industrial Application with 48V Supply
      1. 2.3.1 Robotics and Humanoids
      2. 2.3.2 Server and Telecom
  6. 3Integrated FET 3-Phase Motor Driver DRV8376 for 48V Applications
  7. 4DRV8376 for High Performance System Design
    1. 4.1 Enabling 48V BLDC Motor Drive Applications
    2. 4.2 Compact Design with High Level Integration
    3. 4.3 Increased Power Delivery and Efficiency
    4. 4.4 Increased Creepage and Clearance
    5. 4.5 Improved Precision in Motor Control
    6. 4.6 Integrated Protection
    7. 4.7 EMI Optimization
  8. 5Summary
  9. 6References

4.2 Compact Design with High Level Integration

The device integrates six N-channel MOSFETs with integrated gate driver. The high side gate driver uses charge-pump based power supply with one integrated capacitor, that need only one external capacitor. The integrated shunt less current sense, LDOs, and multi-level protection eliminates the need of external components. All integration available in a 6x4mm package. Table 4-1 lists the integration in DRV8376 compared to a discrete approach illustrating the saving of more than 40 external components.

Table 4-1 Integration of DRV8376 Compared to Discrete Approach
Integration in DRV8376 Number of components in a discrete implementation
Six N-channel MOSFETs Six N-channel discrete MOSFETs
3-phase gate driver with integrated gate current control options One 3-phase gate driver, 12 resistors (six gate resistors & six gate-source resistors)
One integrated charge pump capacitor and one external capacitor Two external capacitors
Three shunt-less current sense 3-shunt resistors, 3 current sense amplifiers and more than 12 resistors for gain configuration
3.3V and 5V LDO 1 or 2 external LDO
Multilevel protection Multiple passive components and comparators