TIDUF31A May   2023  – April 2024

 

  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
    3. 2.3 Highlighted Products
      1. 2.3.1 MSPM0G1507
      2. 2.3.2 UCC28881
      3. 2.3.3 UCC27712
      4. 2.3.4 TLV9064
      5. 2.3.5 TPS54202
  9. 3System Design Theory
    1. 3.1  High-Voltage Buck Auxiliary Power Supply
    2. 3.2  DC Bus Voltage Sensing
    3. 3.3  Motor Drive Stage
    4. 3.4  Bypass Capacitors
    5. 3.5  Phase Current Sensing With Two or Three Shunt Resistors
    6. 3.6  Phase Current Sensing With a Single Shunt Resistor
    7. 3.7  Hall-Effect Sensor or QEI Interface for Sensored Motor Control
    8. 3.8  DAC for Software Debug
    9. 3.9  Overcurrent Protection
    10. 3.10 Overtemperature Protection
    11. 3.11 Isolated UART port
    12. 3.12 Inverter Peak Power Capability
  10. 4Hardware, Software, Testing Requirements, and Test Results
    1. 4.1 Hardware Requirements
      1. 4.1.1 Hardware Board Overview
      2. 4.1.2 Test Equipment for Board Validation
    2. 4.2 Software Requirements
    3. 4.3 Test Setup
    4. 4.4 Test Results
      1. 4.4.1 Auxiliary Power Supply Test
      2. 4.4.2 Current Open Loop Test
      3. 4.4.3 Overcurrent Protection Test
      4. 4.4.4 Motor Start-Up Sequence
      5. 4.4.5 Load Test
  11. 5Design and Documentation Support
    1. 5.1 Design Files
      1. 5.1.1 Schematics
      2. 5.1.2 BOM
    2. 5.2 Tools and Software
    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 a system block diagram of this reference design.

GUID-20230424-SS0I-TMFV-CZCH-TRNNXD0C47CT-low.svg Figure 4-1 TIDA-010250 System 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 their functions. Figure 4-2 shows the top view of the board and different blocks of the TIDA-010250 PCB.

  • AC input connectors and filter
  • Auxiliary power supply
  • MCU controller
  • Motor inverter output connector
  • Phase current sensing with shunt resistors
  • Hall or QEI interface
  • USART serial communication
GUID-20230424-SS0I-QPZL-60SK-LTHQHK5P2FSL-low.jpg Figure 4-2 Layout of M0 Motor Inverter Board

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 or 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.