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

2.2 Building HVAC Valves and Actuators

Valves and actuators are located in HVAC systems to control the air flow in the air handling units and zonal controller units for best cooling/heating regulation. The system designs often require precise motor control to control the position of valves or actuators as per the command from the HVAC controller or thermostat. Figure 2-2 shows a typical block diagram of the system. The supply is typically driven from a 24V AC supply, giving a rectified voltage of 34V (peak voltage up to 42V with 20% tolerance on 24V AC line voltage).

BLDC Motor Drives in Building HVAC Systems Application Diagram Figure 2-2 BLDC Motor Drives in Building HVAC Systems Application Diagram