TIDUFG2 December   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
      1. 2.2.1 Sensor Selection
    3. 2.3 Highlighted Products
      1. 2.3.1 TLV387
      2. 2.3.2 TLV9054
      3. 2.3.3 MSPM0G5187-LP
      4. 2.3.4 LOG300
      5. 2.3.5 UCC28881
      6. 2.3.6 TPS709
  9. 3System Design Theory
    1. 3.1 Current Sensor
    2. 3.2 Hybrid Integrator
    3. 3.3 Band-Pass Filter
      1. 3.3.1 Log Amplifier
      2. 3.3.2 Current Low-Pass Filter
      3. 3.3.3 Non-isolated Voltage Sensing
      4. 3.3.4 Auto Labeling Circuit
        1. 3.3.4.1 Line Voltage Sensing
        2. 3.3.4.2 Arc Gap Voltage Sensing
        3. 3.3.4.3 Differential to Single-Ended Conversion
      5. 3.3.5 Power Supply
  10. 4Hardware, Software, Testing Requirements, and Test Results
    1. 4.1 Hardware Requirements
    2. 4.2 Software
    3. 4.3 Test Setup
      1. 4.3.1 Arc Testing Setup
    4. 4.4 Test Results
  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

2.1 Block Diagram

TIDA-010971 System Block Diagram Figure 2-1 System Block Diagram
TIDA-010971 Board Image With Connection Labels Figure 2-2 Board Image With Connection Labels
  1. Input Voltage Primary: 110-250VAC
  2. Input Voltage Neutral: 0V
  3. LaunchPad connection: (MSPM0G5187-LP)
    1. PA16 A014 bandpass current
    2. PB16 A019 voltage
    3. PB22 A024 LOG300
    4. PB14 A021 isolated voltage
    5. PB15 A020 isolated arc gap
    6. PA15 A015 low pass current
    7. PB4 Red LED
    8. PB5 Green LED
    9. PA11 Relay GPIO
    10. PA10 Relay Latch
    11. PA31 Comparator Arc extinguished
    12. 3.3V
    13. 5V
    14. GND
  4. Arc+: 120VAC (optional J1 jumper to primary)
  5. Arc–:120VAC
  6. Isolated Primary 110-250VAC (optional: J12 jumper to primary)
  7. Isolated Neutral 0V (optional: J13 jumper to neutral)
  8. Relay Control: Output: 110-250VAC, 12A maximum
  9. PCB Rogowski: 12AWG, inner diameter: 3mm