SBOU113A June   2011  – January 2023

 

  1.   INA226EVM Rev A Model User's Guide and Software Tutorial
  2. 1Trademarks
  3. 2Overview
    1. 2.1 INA226EVM Kit Contents
    2. 2.2 Related Documentation from Texas Instruments
  4. 3INA226EVM Hardware Setup
    1. 3.1 Theory of Operation for INA226 Hardware
    2. 3.2 Signal Definitions of H1 (10-Pin Connector Socket)
      1. 3.2.1 Theory of Operation for SM-USB-DIG Platform
  5. 4INA226EVM Hardware
    1. 4.1 Electrostatic Discharge Warning
    2. 4.2 Connecting the Hardware
    3. 4.3 Connecting Power
    4. 4.4 Connecting the USB Cable to the SM-USB-DIG Platform
    5. 4.5 INA226EVM Default Jumper Settings
    6. 4.6 INA226EVM Features
      1. 4.6.1 J2: I2C VS Control Setting
      2. 4.6.2 J3/J4: I2C Address Hardware Setting (A0)
      3. 4.6.3 J5/J6: I2C Address Hardware Setting (A1)
      4. 4.6.4 External I2C Lines and Terminal Block T1
      5. 4.6.5 VIN+/VIN– Input Filter (R1, R2, and C1)
      6. 4.6.6 Shunt Monitor Configuration and Terminal Blocks T3 and T4
  6. 5INA226EVM Software Setup
    1. 5.1 Hardware Requirements
    2. 5.2 Software Installation
  7. 6INA226EVM Software Overview
    1. 6.1 Starting the INA226EVM Software
    2. 6.2 Configuring the INA226EVM Software
      1. 6.2.1 I2C Address Selection
      2. 6.2.2 Configure Operating Mode
      3. 6.2.3 Set Conversion Times
      4. 6.2.4 Set Configuration Register
      5. 6.2.5 Configuring the Alert Pin
    3. 6.3 Using the INA226EVM Software
      1. 6.3.1 INA226 Bus Voltage, Shunt Voltage, Current, and Power Reading Bar
      2. 6.3.2 Calculation and Theory of Operation
      3. 6.3.3 Register Tab
      4. 6.3.4 Graph Tab
      5. 6.3.5 Auto-Write and the Supply Voltage
  8. 7INA226EVM Documentation
    1. 7.1 Schematic
    2. 7.2 PCB Layout
    3. 7.3 Bill of Materials
  9. 8Revision History

4.5 INA226EVM Default Jumper Settings

Figure 4-4 shows the default jumper configuration for the INA226EVM. In general, the jumper settings of the SM-USB-DIG Platform do not need to be changed. You may want to change some of the jumpers on the INA226EVM board to match your specific configuration. For example, you may wish to set a specific I2C address by configuring J3-J6.

GUID-DE97ACF7-048B-4D67-8201-37FC8679BA1F-low.pngFigure 4-4 INA226EVM Default Jumper Settings

Typically, jumper 2 on the INA226EVM is always set to the INT position. When set to the INT position, the SM-USB-DIG Platform provides the supply for the INA226. When this jumper is set to the EXT position, an external supply voltage can be connected to terminal strip T2 to provide the supply for the INA226.

Jumpers 3 through 6 control the I2C address pins for the INA226. These jumpers can set the address for A0 and A1 to either supply, ground, SCL, or SDA. Make sure to only connect one jumper at a time for each address control. Failure to properly connect jumpers can cause shorts or interruptions in the communication lines. For more information on the INA226 addressing, refer to the INA226 product data sheet.

Table 4-1 summarizes the function of the INA226 Test Board jumpers. For most applications, all jumpers should be left in the respective default configurations.

Table 4-1 INA226EVM Test Board Jumper Functions
JUMPER DEFAULT PURPOSE
J2 INT This jumper selects whether the VS pin on the INA226 is connected to the VDUT signal generated from the SM-USB-DIG Platform or whether the digital supply pin is connected to terminal T2, allowing for an external supply to power the device. The default INT position connects the VS pin to the VDUT control signal.
J3/J4 GND This jumper selects the I2C A0 address selection for A0.
J5/J6 GND This jumper selects the I2C A1 address selection for A1.