TIDUFE5 July   2025

 

  1.   1
  2.   Description
  3.   Resources
  4.   Features
  5.   Applications
  6.   6
  7. 1System Description
    1. 1.1 Terminology
    2. 1.2 Key System Specifications
  8. 2System Overview
    1. 2.1 Block Diagram
    2. 2.2 Design Considerations
    3. 2.3 Highlighted Products
      1. 2.3.1  TMS320F2800137
      2. 2.3.2  LMG3651R025
      3. 2.3.3  LMG2650
      4. 2.3.4  TMCS1126
      5. 2.3.5  ISO6721
      6. 2.3.6  UCC28881
      7. 2.3.7  UCC27712
      8. 2.3.8  TPS562206
      9. 2.3.9  TLV9062
      10. 2.3.10 TLV74033
  9. 3System Design Theory
    1. 3.1 Totem Pole PFC
      1. 3.1.1 Inductor Ratings
      2. 3.1.2 AC Voltage Sensing
      3. 3.1.3 DC Link Voltage Sensing
      4. 3.1.4 AC Current Sensing
      5. 3.1.5 DC Link Capacitor Rating
    2. 3.2 Three-Phase PMSM Drive
      1. 3.2.1 Field Oriented Control of PM Synchronous Motor
        1. 3.2.1.1 Space Vector Definition and Projection
        2. 3.2.1.2 Clarke Transformation
        3. 3.2.1.3 Park Transformation
        4. 3.2.1.4 Basic Scheme of FOC for AC Motor
        5. 3.2.1.5 Rotor Flux Position
      2. 3.2.2 Sensorless Control of PM Synchronous Motor
        1. 3.2.2.1 Enhanced Sliding Mode Observer With Phase Locked Loop
          1. 3.2.2.1.1 Mathematical Model and FOC Structure of an IPMSM
          2. 3.2.2.1.2 Design of ESMO for the IPMSM
          3. 3.2.2.1.3 Rotor Position and Speed Estimation With PLL
      3. 3.2.3 Hardware Prerequisites for Motor Drive
        1. 3.2.3.1 Current Sensing With Three-Shunt
        2. 3.2.3.2 Motor Voltage Feedback
  10. 4Hardware, Testing Requirements, and Test Results
    1. 4.1 Hardware Requirements
      1. 4.1.1 Hardware Board Overview
      2. 4.1.2 Test Conditions
      3. 4.1.3 Test Equipment Required for Board Validation
    2. 4.2 Test Setup
    3. 4.3 Test Results
      1. 4.3.1 Functional Waveforms
  11. 5Design and Documentation Support
    1. 5.1 Design Files
      1. 5.1.1 Schematics
      2. 5.1.2 Bill of Materials
      3. 5.1.3 Altium Project
      4. 5.1.4 Gerber Files
      5. 5.1.5 PCB Layout Recommendations
    2. 5.2 Tools
    3. 5.3 Documentation Support
    4. 5.4 Support Resources
    5. 5.5 Trademarks
  12. 6About the Author

4.1.1 Hardware Board Overview

Figure 4-1 shows an overview of a typical motor control with PFC running from AC power. The PFC stage enables wave shaping of the input AC current and provides the adjustable DC power for a three-phase motor.

TIDA-010282 TIDA-010282 Hardware Board Block DiagramFigure 4-1 TIDA-010282 Hardware Board Block Diagram

The motor control board has functional groups that enable a complete motor drive system. The following is a list of the blocks on the board and the functions, Figure 4-2 shows the top view of the board and different blocks of the TIDA-010282 PCB.

  • Power line input filter
  • Digital totem pole PFC
    • Maximum power is up to 1.3kW
    • PFC with 75kHz switching frequency
    • Fast switching devices are GaN, and low switching devices are MOSFET
  • Three-phase inverter
    • Up to 1.3kW, three-phase inverter supports PMSM or IPM
    • 15kHz switching frequency
    • Three shunts for current sensing
  • Control
    • Support daughter board for TMS320F2800137 MCU in 48-pin LQFP package
    • 120MHz, 32-bit CPU with FPU and TMU
  • Auxiliary power supply
    • Onboard +15V and +3.3V bias power supply
TIDA-010282 TIDA-010282 Reference Design Board LayoutFigure 4-2 TIDA-010282 Reference Design Board Layout

TI recommends taking the following precautions when using the board:

  • Do not touch any part of the board or components connected to the board when the board is energized.
  • Use the AC Mains (wall power) supply to power the kit. TI recommends an isolation AC source.
  • Do not touch any part of the board, the kit or the assembly when energized. (Though the power module heat sink is isolated from the board, high-voltage switching generates some capacitive coupled voltages over the heat sink body.)
  • Control ground can be hot