TIDUF27A February   2025  – March 2025 AMC131M03 , MSPM0G1507

 

  1.   1
  2.   Description
  3.   Resources
  4.   Features
  5.   Applications
  6.   6
  7. 1System Description
    1. 1.1 Key System Specifications
    2. 1.2 End Equipment
    3. 1.3 Electricity Meter
    4. 1.4 Power Quality Meter, Power Quality Analyzer
  8. 2System Overview
    1. 2.1 Block Diagram
    2. 2.2 Design Considerations
      1. 2.2.1 Voltage Measurement Analog Front End
      2. 2.2.2 Analog Front End for Current Measurement
      3. 2.2.3 XDS110 Emulator
      4. 2.2.4 Bluetooth® Data Transmission
      5. 2.2.5 Bluetooth® Connection Between Two Modules
      6. 2.2.6 Bluetooth® to UART Connection
      7. 2.2.7 Magnetic Tamper Detection With TMAG5273 Linear 3D Hall-Effect Sensor
    3. 2.3 Highlighted Products
      1. 2.3.1  MSPM0G3507
      2. 2.3.2  AMC131M03
      3. 2.3.3  CDC6C
      4. 2.3.4  RES60A-Q1
      5. 2.3.5  TPS3702
      6. 2.3.6  TPD4E05U06
      7. 2.3.7  ISOUSB111
      8. 2.3.8  LMK1C1104
      9. 2.3.9  MSP432E401Y
      10. 2.3.10 TPS709
      11. 2.3.11 TMAG5273
  9. 3Hardware, Software, Testing Requirements, and Test Results
    1. 3.1 Hardware Requirements
      1. 3.1.1 Clocking System
        1. 3.1.1.1 BAW Oscillator
        2. 3.1.1.2 Crystal Oscillator
        3. 3.1.1.3 PWM
        4. 3.1.1.4 Clock Buffers
      2. 3.1.2 SPI Bus Configuration
      3. 3.1.3 Jumper Settings for LED and UART
    2. 3.2 Software Requirements
      1. 3.2.1 UART for PC GUI Communication
      2. 3.2.2 Direct Memory Access (DMA)
      3. 3.2.3 ADC Setup
      4. 3.2.4 Calibration
    3. 3.3 Test Setup
      1. 3.3.1 Connections to the Test Setup
      2. 3.3.2 Power Supply Options and Jumper Settings
        1.       51
      3. 3.3.3 Cautions and Warnings
    4. 3.4 Test Results
      1. 3.4.1 Electricity Meter Metrology Accuracy Results
      2. 3.4.2 Radiated Emissions Performance
  10. 4Design and Documentation Support
    1. 4.1 Design Files
      1. 4.1.1 Schematics
      2. 4.1.2 BOM
      3. 4.1.3 PCB Layout Recommendations
        1. 4.1.3.1 Layout Prints
    2. 4.2 Tools and Software
    3. 4.3 Documentation Support
    4. 4.4 Support Resources
    5. 4.5 Trademarks
  11. 5About the Author
  12. 6Revision History

3.3.2 Power Supply Options and Jumper Settings

The M0+ MCU, the four stand-alone ADCs, and the rest of TIDA-010244 board are powered from an external power supply by connecting a 3.3V external power and GND. The J7 jumper is an FTDI standard 6-pin header, where an off-the-shelf FTDI UART-to-USB cable can be attached to supply external 3V3, GND, and also a UART port for communication to the PC GUI.

Various jumper headers and jumper settings are present to add to the flexibility of the board. Some of these headers require that jumpers be placed appropriately for the board to function properly. The Jumper Settings for LED and UART section documents the functionality of each jumper on the board.

A 5V supply can be provided over the USB Type-C port by placing the Jumper on JP3, in such a case the USB interface isolation is no longer available. The 5V supply from USB is converted by an onboard LDO down to 3.3V.

The external 3.3V supply can be connected through different headers on the board. The following header can be taken to power the board directly with 3.3V:

  • J7, P3
  • J24, P1
  • JP1, P1
  • JP2, P4
  • JP4, P1–4

Ground connection is found at:

  • J7, P1
  • J25, P1–4
  • JP1, P3
  • JP4, P2–3
  • JP5, P2–3

LED0 indicates the 3V3 level within the USB Type-C isolation. LED1 indicates the 3V3 voltage level for the MSPM0 MCU and LED6 shows if the 5V level is applied to the board.

Additionally, the design has jumper header (J19, J20, J22, J23) connections to provide access to the high-voltage phases to connect an external power converter (like a flyback converter) to supply the board with 3.3V.

Note: In Table 3-2, the headers with (WARNING) text in the MAIN FUNCTIONALITY column are not isolated, so do not use measuring equipment on those headers when running off the Mains. This applies, unless either isolators external to the board of this design are used to connect at the headers, if the equipment is battery powered and does not connect to Mains, or if AC Mains are isolated.