TIDUF03 December   2022

 

  1.   Description
  2.   Resources
  3.   Features
  4.   Applications
  5.   5
  6. 1System Description
    1. 1.1 Key System Specifications
  7. 2System Overview
    1. 2.1 Block Diagram
    2. 2.2 System Design Theory
      1. 2.2.1 Detection Principals
      2. 2.2.2 Saturation
      3. 2.2.3 General Mode of Operation
    3. 2.3 Highlighted Products
      1. 2.3.1 DRV8220
      2. 2.3.2 OPAx202
      3. 2.3.3 TLVx172
      4. 2.3.4 TLV7011
      5. 2.3.5 INA293
      6. 2.3.6 SN74LVC1G74
      7. 2.3.7 TLV767
  8. 3Hardware, Software, Testing Requirements, and Test Results
    1. 3.1 Hardware
      1. 3.1.1  Board Overview
      2. 3.1.2  Filter Stage
      3. 3.1.3  Differential to Single-Ended Converter
      4. 3.1.4  Low-Pass Filter
      5. 3.1.5  Full-Wave Rectifier
      6. 3.1.6  DC Offset Circuit
      7. 3.1.7  Auto-Oscillation Circuit
        1.       31
      8. 3.1.8  DRV8220 H-Bridge
      9. 3.1.9  Saturation Detection Circuit
      10. 3.1.10 H-Bridge Controlled by DFF
      11. 3.1.11 MCU Selection
      12. 3.1.12 Move Away From Timer Capture
      13. 3.1.13 Differentiating DC and AC From the Same Signal
      14. 3.1.14 Fluxgate Sensor
    2. 3.2 Software Requirements
      1. 3.2.1 Software Description for Fault Detection
    3. 3.3 Test Setup
      1. 3.3.1 Ground-Fault Simulation
    4. 3.4 Test Results
      1. 3.4.1 Linearity Over Temperature
    5. 3.5 Fault Response Results
  9. 4Design and Documentation Support
    1. 4.1 Design Files
      1. 4.1.1 Schematics
      2. 4.1.2 BOM
    2. 4.2 Documentation Support
    3. 4.3 Support Resources
    4. 4.4 Trademarks
  10. 5About the Author

3.1.1 Board Overview

The TIDA-010237 is in a BoosterPack™ Plug-in Module form factor to connect to an MSP430 or MSPM0 LaunchPad™ Development Kit. Figure 3-1 shows the top side of the reference design and highlights the board size that is 5 cm × 5.842 cm as well as the AC/DC Detection and Oscillator subsystems.


GUID-20221220-SS0I-M5JV-HLZK-FBZLTD5VVLZ5-low.png

Figure 3-1 Subsystem Location on Board Hardware

Figure 3-2 highlights the connections for both the power supply and sensor to the board. The terminal header J3 and J4 are connections for an external power supply where J3 is for positive12 V and GND. Terminal header J4 is for negative 12 V and GND.


GUID-20221220-SS0I-SDVN-N6RV-JCKSPB2C7KVP-low.png

Figure 3-2 Power Supply and Sensor Board Connections

Connector J5 and J6 are for connecting the driving coil on the Hitachi nanocrystalline core. J6 connects one side of the two drive coils to the DRV8220 outputs. J5 connects the other side of the drive coil to a 1-kΩ sense resistor of the receive detection circuit.