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

2.3.5 TPS3702

The TPS3702 is an integrated overvoltage and undervoltage window voltage detector in a small SOT-6 package. This highly accurate voltage detector is an excellent choice for systems that operate on low-voltage supply rails and have narrow margin supply tolerances. Low threshold hysteresis options of 0.55% and 1.0% prevent false reset signals when the monitored voltage supply is in the normal range of operation. Internal glitch immunity and noise filters further eliminate false resets resulting from erroneous signals. The TPS3702 does not require any external resistors for setting overvoltage and undervoltage reset thresholds, which further increases overall accuracy and reduces design size and cost. The SET pin is used to select between the two available threshold voltages designed into each device. A separate SENSE input pin and VDD pin allow for the redundancy sought by safety-critical and high-reliability systems. This device also features independent reset outputs for the overvoltage (OV) and undervoltage (UV) pins; as a result of the open-drain configuration, UV and OV can be tied together. This device has a low typical quiescent current specification of 7µA and is qualified for use over the industrial temperature range of –40°C to 125°C.