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

2.1 Automotive 48V HVAC Valves and Actuators

Figure 2-1 shows a simplified block diagram of a HVAC valve or actuator driven from 48V supply using a BLDC motor drive. The position of the valve is adjusted based on the command from the Electronic control unit (ECU). The 48V adaption in automotive systems reduces the current requirement for same motor power that results in

  • Reduction in copper wiring
  • Increase in power delivery
  • Increase in system efficiency
  • Reduction of cost and weight

The new smart motors in automotive systems need compact designs to integrate electronics to motor and that is easier with lower current designs at 48V.

BLDC Motor Drives in Automotive HVAC Systems Application Diagram Figure 2-1 BLDC Motor Drives in Automotive HVAC Systems Application Diagram