SLUAAV0A April   2024  – November 2025 UCC27301A-Q1 , UCC27311A-Q1 , UCC27517 , UCC27517A , UCC27517A-Q1 , UCC27524 , UCC27614 , UCC27624 , UCC27624-Q1 , UCC27710 , UCC27712 , UCC27712-Q1 , UCC27714 , UCC27734 , UCC27735 , UCC44273 , UCC57102 , UCC57102-Q1 , UCC57102Z , UCC57108 , UCC57108-Q1

 

  1.   1
  2.   Abstract
  3.   Trademarks
  4. 1Introduction
  5. 2PFC Stage
    1. 2.1 Boost PFC
    2. 2.2 Interleaved Boost PFC
  6. 3Motor Drive Stage
    1. 3.1 Standalone Gate Drivers vs. IPM
    2. 3.2 Driving Three-Phase Motors
    3. 3.3 Higher Power Levels for Commercial HVAC
  7. 4DC/DC Stage
    1. 4.1 Synchronous Buck Converter
    2. 4.2 Flyback Converters
  8. 5Summary
  9. 6References
  10. 7Revision History

1 Introduction

HVAC systems are used to maintain a comfortable environment inside industrial, commercial, and residential buildings. HVAC systems are typically used to control the air in the environment and consist of ventilation systems, heating systems, and air-cooling systems.

For more HVAC applications, Texas Instruments covers a variety of applications found in the HVAC system applications page.

Modern HVAC systems use gate drivers in different subsystems, such as power factor correction (PFC) circuits, DC/DC converters, and motor drives. This application note discusses the usage of gate drivers in industrial, commercial, and residential HVAC systems, including guidelines in selecting a gate driver and key features to consider for each subsystem. Figure 1-1 shows a block diagram of an outdoor air conditioner and highlights typical subsystems where gate drivers are used.

Outdoor Air Conditioner Block DiagramFigure 1-1 Outdoor Air Conditioner Block Diagram