SBOU126A April   2012  – October 2026 INA3221 , INA3221-Q1

 

  1.   1
  2.   Description
  3.   Features
  4.   4
  5. 1Evaluation Module Overview
    1. 1.1 Introduction
    2. 1.2 Kit Contents
    3. 1.3 Device Information
  6. 2Hardware
    1. 2.1 Setup
      1. 2.1.1 INA3221 Hardware Theory of Operation
      2. 2.1.2 H1 Signal Definitions (10-Pin Male Connector Socket)
        1. 2.1.2.1 SM-USB-DIG Platform Theory of Operation
    2. 2.2 INA3221EVM Hardware Overview
      1. 2.2.1 Electrostatic Discharge Warning
      2. 2.2.2 Connecting the Hardware
      3. 2.2.3 Connecting the USB Cable to the SM-USB-DIG Platform
      4. 2.2.4 INA3221EVM Features
        1. 2.2.4.1 J3: I2C VS Control Setting
        2. 2.2.4.2 J1 and J2: I2C Address Hardware Setting (A0)
        3. 2.2.4.3 External I2C Lines and Terminal Block T1
        4. 2.2.4.4 Shunt Monitor Configuration and Terminal Blocks T3, T5, and T6
    3. 2.3 Power Requirements
      1. 2.3.1 Connecting Power
    4. 2.4 Jumper Information
      1. 2.4.1 Default Jumper Settings
  7. 3Software
    1. 3.1 INA3221EVM Software Setup
      1. 3.1.1 INA3221EVM Software Operating Systems
      2. 3.1.2 Software Installation
    2. 3.2 INA3221EVM Software Overview
      1. 3.2.1 Starting the INA3221EVM Software
      2. 3.2.2 Using the INA3221EVM Software
        1. 3.2.2.1 INA3221 Bus Voltage, Shunt Voltage, and Shunt Voltage Sum Reading Bar
        2. 3.2.2.2 Register Tab
        3. 3.2.2.3 Graph Tab
        4. 3.2.2.4 Auto-Write and DVDD Voltage
  8. 4Hardware Design Files
    1. 4.1 Schematic
    2. 4.2 PCB Layout
    3. 4.3 Bill of Materials
  9. 5Related Documentation
  10. 6Revision History

3.2.2.3 Graph Tab

The Graph tab, shown in Figure 3-8, contains a plot window that shows the progression of data over time on the INA3221. All seven variables at the bottom of the EVM software (CH1VSHUNT, CH2VSHUNT, CH3VSHUNT, CH1VBUS, CH2VBUS, CH3VBUS, and VSHUNT Sum) can be plotted using the drop-down box directly above the graph. After the desired plot has been selected, toggle the Continuously Poll Data button above the plot to begin polling for data. If the user desires to save the data from the plot, simply select the USB Controls drop-down at the top of the page, then select the Start Graph Log option. When the Start Graph Log is selected, the user is prompted to select a location for the data and to name the file.

INA3221EVM Graphing INA3221 DataFigure 3-8 Graphing INA3221 Data