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INA231EVM Evaluation Board and Software Tutorial
This user's guide describes the characteristics, operation, and use of the INA231EVM evaluation board. It
discusses how to set up and configure the software and hardware, and reviews various aspects of the
program operation. Throughout this document, the terms evaluation board, evaluation module, and EVM
are synonymous with the INA231EVM. This user's guide also includes information regarding operating
procedures and input/output connections, an electrical schematic, printed circuit board (PCB) layout
drawings, and a parts list for the EVM.
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Microsoft, Windows are registered trademarks of Microsoft Corporation.
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C is a trademark of NXP Semiconductors.
WinZIP is a registered trademark of WinZip International LLC.
All other trademarks are the property of their respective owners.
SBOU128 - February 2013
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Copyright © 2013, Texas Instruments Incorporated
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INA231EVM Evaluation Board and Software Tutorial
User's Guide
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Related Manuals for Texas Instruments INA231
Summary of Contents for Texas Instruments INA231
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Page 1: Table Of Contents
C is a trademark of NXP Semiconductors. WinZIP is a registered trademark of WinZip International LLC. All other trademarks are the property of their respective owners. SBOU128 – February 2013 INA231EVM Evaluation Board and Software Tutorial Submit Documentation Feedback Copyright © 2013, Texas Instruments Incorporated... - Page 2 Signal Definition of J1 on INA231EVM Board ................INA231EVM Test Board Jumper Functions ..................INA231 I C Address Configuration ................... Bill of Materials: INA231EVM INA231EVM Evaluation Board and Software Tutorial SBOU128 – February 2013 Submit Documentation Feedback Copyright © 2013, Texas Instruments Incorporated...
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Page 3: Overview
C™ interface. The INA231 monitors both current and supply voltage, with programmable conversion times and averaging modes. The INA231EVM is a platform for evaluating the performance of the INA231 under various signal, shunt, and supply conditions. This document gives a general overview of the INA231EVM, and provides a general description of the features and functions to be considered while using this evaluation module. -
Page 4: Ina231Evm Hardware Setup
SM-USB-DIG Platform. The SM-USB-DIG Platform generates the analog and digital signals used to communicate with the INA231 test board. Connectors on the INA231EVM test board allow the user to connect to the system under test conditions to monitor the power, current, and voltage. -
Page 5: Sm-Usb-Dig Platform Block Diagram
Figure 4 shows the block diagram for the SM-USB-DIG Platform. This platform is a general-purpose data acquisition system that is used on several different Texas Instruments evaluation modules. The details of its operation are included in a separate document, SBOU098 (available for download at www.ti.com). -
Page 6: Ina231Evm Hardware
ESD workstation. Connecting the Hardware To set up the INA231EVM and connect the two PCBs of the EVM together (that is, the INA231 Test Board and SM-USB-DIG Platform board), gently slide the male and female ends of the 10-pin connectors together. -
Page 7: Connecting The Usb Cable To The Sm-Usb-Dig Platform
Windows then confirms installation of the drivers with the message shown in Figure Figure 7. Confirmation of SM-USB-DIG Platform Driver Installation SBOU128 – February 2013 INA231EVM Evaluation Board and Software Tutorial Submit Documentation Feedback Copyright © 2013, Texas Instruments Incorporated... -
Page 8: 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. - Page 9 3.6.1 J2: I Control Setting Jumper J2 selects what the INA231 supply pin is connected to. If J2 is set to the INT position, the V pin is connected to the switchable V signal generated from the SM-USB-DIG Platform. This voltage can be set to either 3.3 V or 5 V, depending on how it is configured in the software.
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Page 10: Typical Filter Setup
Figure 9. Typical Filter Setup 3.6.6 Shunt Monitor Configuration and Terminal Blocks T3 and T4 The INA231 is generally used in either a high-side or low-side shunt configuration, as shown in Figure Terminal block T3 represents V and ground, while terminal block T4 represents VIN+ and VIN–. -
Page 11: Ina231Evm Software Setup
Once the files are extracted, navigate to the INA231EVM folder you created on the hard drive. Locate the setup.exe file and execute it to start the installation. The INA231 software installer file then begins the installation process as shown in Figure Figure 11. -
Page 12: Ina231Evm License Agreements
After the installation process initializes, the user is given the choice of selecting the directory in which to install the program; the default location is C:\Program Files\INA231\ and C:\Program Files\National Instruments\. Following this option, two license agreements are presented that must be accepted, as... -
Page 13: Ina231Evm Software Overview
This section discusses how to use the INA231EVM software. Software operation involves a two-step process: configuration of the INA231 settings, and operation of the tool. Starting the INA231EVM Software The INA231 software can be operated through the Windows Start menu. From Start, select All Programs; then select the INA231EVM program. Figure 14 illustrates how the software should appear if the INA231EVM is functioning properly. -
Page 14: Ina231Evm Software: Communication Error With The Sm-Usb-Dig Platform
I C lines. By moving the A0 and A1 addresses on jumpers J3-J6 to either GND, V , SDA or SCL, the INA231 can be changed to a total of 16 I C addresses as shown in Table Table 5. INA231 I... -
Page 15: Setting The A1 Address
I C addresses. Click on either the A0 or A1 box and select how the hardware is configured on the EVM. Failure to select the correct address prevents the INA231 device from communicating with the software. -
Page 16: Configuring Operating Mode
Figure 17. Configuring Operating Mode The Configure Operation step also contains a drop down box for selecting the Averaging Mode. The INA231 can be setup to take the average of several measurements before storing the value of the measurements in the register table. -
Page 17: Setting The Configuration Register (Calibration Register)
Configuring the Alert Pin The Alert Pin from the INA231 allows the user to set limits that monitor the registers and trigger a flag when they are exceeded. The register that is being monitored can be changed by selecting the desired... -
Page 18: Ina231 Results Bar
22, allows the user to constantly check the status of the INA231 unit itself. These values are updated each time the Read All Reg button is pressed at the top of the software. In addition to the register values stored in the part, the software also includes flags for when the part is ready to trigger another conversion and when the Alert pin is triggered. -
Page 19: Registers Tab
5.3.3 Register Tab The Register tab contains information on the individual operation of the INA231 registers. Each register can be changed on a bit-by-bit basis to allow the user to have total control of the device beyond the general functionality of the GUI alone. Most of this functionality is displayed in the Configuration register... -
Page 20: Graphing The Ina231 Data
5.3.4 Graph Tab The Graph tab contains a plot window that shows the progression of data over time on the INA231. All four variables at the bottom of the EVM software (V , Current, and Power) can be plotted using SHUNT the drop-down box directly above the graph. -
Page 21: Ina231Evm Documentation
JUMP3 TERMINAL BLOCKS LEDS TBLOCK3X_SMALL VBUS VBUS TBLOCK2X_SMALL TBLOCK2X_SMALL TBLOCK2X_SMALL VIN- VIN- DVDD VIN+ DVDD_EXT .1uF VIN+ Figure 27. INA231EVM Schematic SBOU128 – February 2013 INA231EVM Evaluation Board and Software Tutorial Submit Documentation Feedback Copyright © 2013, Texas Instruments Incorporated... -
Page 22: Pcb Layout
PCB Layout Figure 28 shows the component layout for the INA231EVM PCB. Figure 28. INA231EVM PCB Top Layer (Component Side) INA231EVM Evaluation Board and Software Tutorial SBOU128 – February 2013 Submit Documentation Feedback Copyright © 2013, Texas Instruments Incorporated... -
Page 23: Bill Of Materials: Ina231Evm
On Shore Technology Inc ED555/2DS Bumpons Bumpon Hemisphere 0.50 x 0.14 Clear SJ-5312 (CLEAR) Connector, Socket RT Angle 1-Position Mill-Max Manufacturing 851-93-10-20-001000 0.050 SBOU128 – February 2013 INA231EVM Evaluation Board and Software Tutorial Submit Documentation Feedback Copyright © 2013, Texas Instruments Incorporated... -
Page 24: Regulatory Compliance Information
Any exceptions to this are strictly prohibited and unauthorized by Texas Instruments unless user has obtained appropriate experimental/development licenses from local regulatory authorities, which is responsibility of user including its acceptable authorization. - Page 25 FCC Interference Statement for Class B EVM devices This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications.
- Page 26 Also, please do not transfer this product, unless you give the same notice above to the transferee. Please note that if you could not follow the instructions above, you will be subject to penalties of Radio Law of Japan. Texas Instruments Japan Limited (address) 24-1, Nishi-Shinjuku 6 chome, Shinjuku-ku, Tokyo, Japan http://www.tij.co.jp...
- Page 27 FDA Class III or similar classification, then you must specifically notify TI of such intent and enter into a separate Assurance and Indemnity Agreement. Mailing Address: Texas Instruments, Post Office Box 655303, Dallas, Texas 75265 Copyright © 2013, Texas Instruments Incorporated...
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Page 28: Important Notice
IMPORTANT NOTICE Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, enhancements, improvements and other changes to its semiconductor products and services per JESD46, latest issue, and to discontinue any product or service per JESD48, latest issue. -
Page 29: Texas Instruments
Mouser Electronics Authorized Distributor Click to View Pricing, Inventory, Delivery & Lifecycle Information: Texas Instruments INA231EVM...
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