TIDUF33 june   2023

 

  1.   1
  2.   Description
  3.   Resources
  4.   Features
  5.   Applications
  6.   6
  7. 1System Description
    1. 1.1 Key System Specifications
  8. 2System Overview
    1. 2.1 Block Diagram
    2. 2.2 Design Considerations
      1. 2.2.1 Current and Voltage Controller
      2. 2.2.2 High-Resolution PWM Generation
    3. 2.3 Highlighted Products
      1. 2.3.1 TMS320F280039
      2. 2.3.2 ADS131M08
  9. 3Hardware, Software, Testing Requirements, and Test Results
    1. 3.1 Hardware Requirements
    2. 3.2 Software Requirements
      1. 3.2.1 Opening the Project Inside Code Composer Studio
      2. 3.2.2 Project Structure
      3. 3.2.3 Software Flow Diagram
    3. 3.3 Test Setup
      1. 3.3.1 Hardware Setup to Tune the Current and Voltage Loops
      2. 3.3.2 Hardware Setup to Test Bidirectional Power Flow
      3. 3.3.3 Hardware Setup for Current and Voltage Calibration
    4. 3.4 Test Procedure
      1. 3.4.1 Lab Variables Definitions
      2. 3.4.2 Lab 1. Open-Loop Current Control Single Phase
        1. 3.4.2.1 Setting Software Options for Lab 1
        2. 3.4.2.2 Building and Loading the Project and Setting up Debug Environment
        3. 3.4.2.3 Running the Code
      3. 3.4.3 Lab 2. Closed Loop Current Control Single Phase
        1. 3.4.3.1 Setting Software Options for Lab 2
        2. 3.4.3.2 Building and Loading the Project and Setting up Debug Environment
        3. 3.4.3.3 Running the Code
        4. 3.4.3.4 Current Calibration
      4. 3.4.4 Lab 3. Closed Loop Current Control Dual Phase
        1. 3.4.4.1 Setting Software Options for Lab 3
        2. 3.4.4.2 Building and Loading the Project and Setting up Debug Environment
        3. 3.4.4.3 Running the Code
      5. 3.4.5 Lab 4. Closed Loop Current and Voltage Control
        1. 3.4.5.1 Setting Software Options for Lab 4
        2. 3.4.5.2 Building and Loading the Project and Setting up Debug Environment
        3. 3.4.5.3 Running the Code
        4. 3.4.5.4 Voltage Calibration
    5. 3.5 Test Results
      1. 3.5.1 Current Loop Load Regulation Error
      2. 3.5.2 Voltage Loop Load Regulation Error
      3. 3.5.3 Voltage Transition at No Load
      4. 3.5.4 Transient Response at Start-Up
      5. 3.5.5 Bidirectional Current Switching Time
  10. 4Design and Documentation Support
    1. 4.1 Design Files
      1. 4.1.1 Schematics
      2. 4.1.2 BOM
    2. 4.2 Tools and Software
    3. 4.3 Documentation Support
    4. 4.4 Support Resources
    5. 4.5 Trademarks
  11. 5About the Author

Features

  • Dual-phase interleaved, 600-W, bidirectional buck power stage
  • 15.8-bits PWM resolution at 100-kHz switching frequency
  • External delta-sigma ADC for closed-loop control
  • Constant current charging and discharging with regulation error < ±20 mA
  • Constant voltage mode supported in both charging and discharging with regulation error < ±1 mV
  • Software Frequency Response Analyzer (SFRA) and compensation designer for ease of tuning of control loops
  • powerSUITE support for easy adaptation of design for user requirements