• Menu
  • Product
  • Email
  • PDF
  • Order now

  • Digitally Controlled Bridgeless Power Factor Correction (BL PFC) Using C2000 MCU

    • TIDU312A May   2014  – November 2020

       

  • CONTENTS
  • SEARCH
  • Digitally Controlled Bridgeless Power Factor Correction (BL PFC) Using C2000 MCU
  1.   Trademarks
  2. 1Introduction
    1. 1.1 PFC Stage Implementation
    2. 1.2 BL PFC Electrical Specifications
  3. 2Software Overview
    1. 2.1 Software Control Flow
    2. 2.2 Incremental Builds
  4. 3Procedure for Running the Incremental Builds
    1. 3.1 Build 1: Open-Loop Boost With ADC Measurements
      1. 3.1.1 Build 1 Objective
      2. 3.1.2 Build 1 Overview
      3. 3.1.3 Build 1 Protection
      4. 3.1.4 Build 1 Procedure
        1. 3.1.4.1 Step 1.1: Start CCS and Open a Project
        2. 3.1.4.2 Step 1.2: Device Initialization, Main, and ISR Files
        3. 3.1.4.3 Step 1.3: Build and Load the Project
        4. 3.1.4.4 Step 1.4: Debug the Environment Windows
          1. 3.1.4.4.1 Step 1.5: Use Real-Time Emulation
          2. 3.1.4.4.2 Step 1.6: Run the Code for Build 1
    2. 3.2 Build 2: BL PFC With Closed-Current Loop
      1. 3.2.1 Build 2 Objective
      2. 3.2.2 Build 2 Overview
      3. 3.2.3 Build 2 Procedure
        1. 3.2.3.1 Step 2.1: Build and Load Project
    3. 3.3 Build 3: BL PFC With Closed Voltage and Current Loop
      1. 3.3.1 Build 3 Objective
      2. 3.3.2 Build 3 Overview
      3. 3.3.3 Build 3 Procedure
        1. 3.3.3.1 Step 3.1: Build and Load Project
  5. 4Test Results
  6. 5References
  7. 6Revision History
  8. IMPORTANT NOTICE
search No matches found.
  • Full reading width
    • Full reading width
    • Comfortable reading width
    • Expanded reading width
  • Card for each section
  • Card with all content

 

APPLICATION NOTE

Digitally Controlled Bridgeless Power Factor Correction (BL PFC) Using C2000 MCU

Trademarks

C2000 and Code Composer Studio are trademarks of Texas Instruments Incorporated.

All trademarks are the property of their respective owners.

1 Introduction

The function of a PFC stage is to convert the AC mains voltage to a regulated DC bus voltage while drawing a sine wave input current. Typically, this is implemented using a bridge rectifier followed by a boost PFC stage. However, to reduce the power losses in the diode bridge and to improve the system efficiency an alternative approach is to use a bridgeless system and implement both the rectification and power factor control using two boost stages. In this approach the two boost stages are operated alternately in the positive and negative half cycles of the ac mains voltage. A C2000 microcontroller with its on-chip PWM and ADC modules is able to implement complete digital control of such bridgeless PFC (BL PFC) system.

 
Texas Instruments

© Copyright 1995-2025 Texas Instruments Incorporated. All rights reserved.
Submit documentation feedback | IMPORTANT NOTICE | Trademarks | Privacy policy | Cookie policy | Terms of use | Terms of sale