SBOU128B february   2013  – july 2023 INA231

 

  1.   1
  2.   INA231EVM Evaluation Board and Software Tutorial
  3.   Trademarks
  4. 1Overview
    1. 1.1 INA231EVM Kit Contents
    2. 1.2 Related Documentation from Texas Instruments
  5. 2INA231EVM Hardware
    1. 2.1 Theory of Operation for INA231 Hardware
    2. 2.2 Signal Definitions of H1 (10-Pin Connector Socket)
      1. 2.2.1 Theory of Operation for SM-USB-DIG Platform
  6. 3INA231EVM (Rev A) Hardware Setup
    1. 3.1 Electrostatic Discharge Warning
    2. 3.2 Connecting the Hardware
    3. 3.3 Connecting Power
    4. 3.4 Connecting the USB Cable to the SM-USB-DIG Platform
    5. 3.5 INA231EVM Default Jumper Settings
    6. 3.6 INA231EVM Features
      1. 3.6.1 J2: I2C VS Control Setting
      2. 3.6.2 J3 and J4: I2C Address Hardware Setting (A0)
      3. 3.6.3 J5 and J6: I2C Address Hardware Setting (A1)
      4. 3.6.4 External I2C Lines and Terminal Block T1
      5. 3.6.5 VIN+ and VIN– Input filter (R1, R2, and C1)
      6. 3.6.6 Shunt Monitor Configuration and Terminal Blocks T3 and T4
  7. 4INA231EVM Software Setup
    1. 4.1 Operating Systems for the INA231EVM Software
    2. 4.2 Software Installation
  8. 5INA231EVM Software Overview
    1. 5.1 Starting the INA231EVM Software
    2. 5.2 Configuring the INA231EVM Software
      1. 5.2.1 I2C Address Selection
      2. 5.2.2 Configure Operating Mode
      3. 5.2.3 Set Conversion Times
      4. 5.2.4 Set Configuration Register
      5. 5.2.5 Configuring the Alert Pin
    3. 5.3 Using the INA231EVM Software
      1. 5.3.1 INA231 Bus Voltage, Shunt Voltage, Current, and Power Reading Bar
      2. 5.3.2 Calculation and Theory of Operation
      3. 5.3.3 Register Tab
      4. 5.3.4 Graph Tab
      5. 5.3.5 Auto-Write and the Supply Voltage
  9. 6INA231EVM Documentation
    1. 6.1 Schematic
    2. 6.2 PCB Layout
    3. 6.3 Bill of Materials
  10. 7Revision History

3.5 INA231EVM Default Jumper Settings

Figure 3-4 shows the default jumper configuration for the INA231EVM. In general, the jumper settings of the SM-USB-DIG Platform do not need to be changed. Users may want to change some of the jumpers on the INA231EVM board to match their specific configurations. For example, user can set a specific I2C address by configuring J3-J6.

GUID-5D7D1A9B-34A6-45C7-A6BF-CEEE42EA7241-low.gifFigure 3-4 INA231EVM Default Jumper Settings

Typically, jumper 2 on the INA231EVM is always set to the INT position. When set to the INT position, the SM-USB-DIG Platform provides the supply for the INA231. 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 INA231.

Jumpers 3 through 6 control the I2C address pins for the INA231. 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. See also the INA231 data sheet.

Table 3-1 summarizes the function of the INA231 Test Board jumpers. For most applications, all jumpers should be left in the respective default configurations.

Table 3-1 INA231EVM Test Board Jumper Functions
JUMPER DEFAULT

PURPOSE
J2 INT This jumper selects whether the VS pin on the INA231 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.