Texas Instruments INA231EVM User Manual
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Texas Instruments INA231EVM User Manual

Texas Instruments INA231EVM User Manual

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EVM User's Guide: INA231EVM
INA231 Evaluation Module
Description
The INA231 evaluation module (EVM) is a platform
to evaluate the main features and performance of the
INA231. The EVM supports current measurements up
to 10-A and comes with graphical user interface (GUI)
support to read and write to device registers.
Get Started
1. Buy the INA231EVM evaluation board.
2. Buy the
TI-SCB sensor control
3. Download and install the
Drivers.
SBOU310 – OCTOBER 2024
Submit Document Feedback
board.
PAMB Windows USB
Copyright © 2024 Texas Instruments Incorporated
4. Read this User's Guide to set up the hardware.
5. Run the INA231EVM-GUI.
Features
•
GUI support to read and write device registers as
well as view and save results data
•
EVM detached from SCB for custom use cases
•
Multiple EVM support with single SCB/GUI
•
Conveniently powered from a common micro-USB
connector through the SCB
Description
INA231 Evaluation Module
1

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Summary of Contents for Texas Instruments INA231EVM

  • Page 1 Multiple EVM support with single SCB/GUI Get Started • Conveniently powered from a common micro-USB connector through the SCB 1. Buy the INA231EVM evaluation board. 2. Buy the TI-SCB sensor control board. 3. Download and install the PAMB Windows USB Drivers.

  • Page 2: Kit Contents

    This EVM is designed to evaluate the performance of the INA231. Throughout this document, the terms evaluation board, evaluation module, and EVM are synonymous with the INA231EVM. This document includes a schematic, reference printed circuit board (PCB) layouts, and a complete bill of materials (BOM).

  • Page 3: Evm Operation

    2-2. Make sure to use a different I2C address for each device. The GUI only supports up to 4 EVMs total. Figure 2-2. Multiple EVMs Connected to SCB Controller SBOU310 – OCTOBER 2024 INA231 Evaluation Module Submit Document Feedback Copyright © 2024 Texas Instruments Incorporated...
  • Page 4 EVM. Figure 2-4 shows a convenient way to use the multiple IN+ and IN- terminals with an external shunt for this use case. INA231 Evaluation Module SBOU310 – OCTOBER 2024 Submit Document Feedback Copyright © 2024 Texas Instruments Incorporated...
  • Page 5 4. Connect the system ground to the GND terminal (J1 pin 1). 5. Power on the system, and observe the device states and outputs through the GUI. SBOU310 – OCTOBER 2024 INA231 Evaluation Module Submit Document Feedback Copyright © 2024 Texas Instruments Incorporated...

  • Page 6: Digital Circuitry

    PAMB correspond to the EVM header pins. Note not to add too much resistance in the jumper wire connection setup or the signal can degrade and cause communication errors. INA231 Evaluation Module SBOU310 – OCTOBER 2024 Submit Document Feedback Copyright © 2024 Texas Instruments Incorporated...

  • Page 7: Driver Installation

    While shorting the two test points labeled DFU (shown in Figure 3-1) with a pair of tweezers (or wire), press and release the RESET button. SBOU310 – OCTOBER 2024 INA231 Evaluation Module Submit Document Feedback Copyright © 2024 Texas Instruments Incorporated...
  • Page 8 Verify that the EVM is connected to the SCB before plugging the SCB into a USB port. 3. Open the GUI Composer application to launch the GUI from the web browser (see Figure 3-2). INA231 Evaluation Module SBOU310 – OCTOBER 2024 Submit Document Feedback Copyright © 2024 Texas Instruments Incorporated...
  • Page 9 Figure 3-4. Hardware Connected a. A green indicator with the device type and the text DEVICE CONNECTED is also visible near the top left of the GUI. SBOU310 – OCTOBER 2024 INA231 Evaluation Module Submit Document Feedback Copyright © 2024 Texas Instruments Incorporated...

  • Page 10: Gui Operation

    GUI to EVM Connection), as well as access helpful resources through the buttons on the bottom (see Figure 3-7). Figure 3-7. Home Tab Links INA231 Evaluation Module SBOU310 – OCTOBER 2024 Submit Document Feedback Copyright © 2024 Texas Instruments Incorporated...
  • Page 11 – Input the value of the used shunt resister in mΩ. • Max Expected Current – Input the value of the maximum expected current across the shunt resistor in Amps. SBOU310 – OCTOBER 2024 INA231 Evaluation Module Submit Document Feedback Copyright © 2024 Texas Instruments Incorporated...
  • Page 12 From this page, you can read and write device registers on the EVM. Here are some important notes: • Use the Selected EVM drop-down menu at the top to choose which device to work with on the Registers page. INA231 Evaluation Module SBOU310 – OCTOBER 2024 Submit Document Feedback Copyright © 2024 Texas Instruments Incorporated...
  • Page 13 – Press the Read All Registers button after loading data to update the Registers page with the actual device values in case the loaded registers were not compatible with the connected device. SBOU310 – OCTOBER 2024 INA231 Evaluation Module Submit Document Feedback Copyright © 2024 Texas Instruments Incorporated...
  • Page 14 – EVM 1 automatically populates with the lowest addressed device unless a setting has already been selected. – Changing this here also changes the same setting in the Configuration tab. INA231 Evaluation Module SBOU310 – OCTOBER 2024 Submit Document Feedback Copyright © 2024 Texas Instruments Incorporated...
  • Page 15 – The minimum Y-axis value to use for all EVMs in this plot. – If this field is empty when Manual Scale is selected, then the plot auto-populates with the minimum value currently in the plot. SBOU310 – OCTOBER 2024 INA231 Evaluation Module Submit Document Feedback Copyright © 2024 Texas Instruments Incorporated...
  • Page 16 – For this example, the EVM returns the results and state ("idle" or "collecting") in JSON format: {"acknowledge":"wreg 0x00 0x436f"} {"console":"Writing 0x436f to CONFIGURATION register"} {"evm_state":"idle"} INA231 Evaluation Module SBOU310 – OCTOBER 2024 Submit Document Feedback Copyright © 2024 Texas Instruments Incorporated...
  • Page 17 Stop collecting data format: stop – Where stop is always lower case. – The EVM returns the acknowledgment and state in JSON format: {"acknowledge":"stop"} {"evm_state":"idle"} SBOU310 – OCTOBER 2024 INA231 Evaluation Module Submit Document Feedback Copyright © 2024 Texas Instruments Incorporated...
  • Page 18 Hardware Design Files www.ti.com 4 Hardware Design Files 4.1 Schematics Figure 4-1 Figure 4-2 show the schematic of the INA231EVM. Figure 4-1 shows the circuitry for the EVM. Figure 4-2 shows the mechanical components included with the EVM. +3V3 +3V3 1.0k...
  • Page 19 These assemblies must comply with workmanship standards IPC-A-610 Class 2, unless otherwise speci e d. ¤ Assembly Note Trim the leads under J1 (back of PCB) to give clearance from surface Figure 4-2. Hardware Schematic SBOU310 – OCTOBER 2024 INA231 Evaluation Module Submit Document Feedback Copyright © 2024 Texas Instruments Incorporated...

  • Page 20: Pcb Layout

    Board layouts are not to scale. These figures are intended to show how the board is laid out. The figures are not intended to be used for manufacturing EVM PCBs. Figure 4-3 through Figure 4-6 illustrate the PCB layers of the INA231EVM. Figure 4-3. Top View Figure 4-4. Top Layer Figure 4-6. Bottom Layer Figure 4-5. Bottom View INA231 Evaluation Module SBOU310 –...
  • Page 21 Hardware Design Files 4.3 Bill of Materials Table 4-1 provides the parts list for the INA231EVM. Table 4-1. Bill of Materials Designator Quantity Value Description Package Reference Part Number Manufacturer !PCB1 Printed Circuit Board INA231EVM CAP, CERM, 1 µF, 16 V,+/- 20%, X5R, 0402...
  • Page 22 Part Number Manufacturer 10 mOhms ±0.5% 2W Chip Resistor 2512 (6432 Metric) Automotive AEC- 2512 PCS2512DR0100ET Ohmite Q200, Current Sense, Moisture Resistant Metal Film INA231 Evaluation Module SBOU310 – OCTOBER 2024 Submit Document Feedback Copyright © 2024 Texas Instruments Incorporated...

  • Page 23: Additional Information

    Newer revisions are available from www.ti.com or the Texas Instruments' Literature Response Center at (800) 477-8924 or the Product Information Center at (972) 644-5580. When ordering, identify the document by both title and literature number.
  • Page 24 STANDARD TERMS FOR EVALUATION MODULES Delivery: TI delivers TI evaluation boards, kits, or modules, including any accompanying demonstration software, components, and/or documentation which may be provided together or separately (collectively, an “EVM” or “EVMs”) to the User (“User”) in accordance with the terms set forth herein.
  • Page 25 www.ti.com Regulatory Notices: 3.1 United States 3.1.1 Notice applicable to EVMs not FCC-Approved: FCC NOTICE: This kit is designed to allow product developers to evaluate electronic components, circuitry, or software associated with the kit to determine whether to incorporate such items in a finished product and software developers to write software applications for use with the end product.
  • Page 26 www.ti.com Concernant les EVMs avec antennes détachables Conformément à la réglementation d'Industrie Canada, le présent émetteur radio peut fonctionner avec une antenne d'un type et d'un gain maximal (ou inférieur) approuvé pour l'émetteur par Industrie Canada. Dans le but de réduire les risques de brouillage radioélectrique à...
  • Page 27 www.ti.com EVM Use Restrictions and Warnings: 4.1 EVMS ARE NOT FOR USE IN FUNCTIONAL SAFETY AND/OR SAFETY CRITICAL EVALUATIONS, INCLUDING BUT NOT LIMITED TO EVALUATIONS OF LIFE SUPPORT APPLICATIONS. 4.2 User must read and apply the user guide and other available documentation provided by TI regarding the EVM prior to handling or using the EVM, including without limitation any warning or restriction notices.
  • Page 28 Notwithstanding the foregoing, any judgment may be enforced in any United States or foreign court, and TI may seek injunctive relief in any United States or foreign court. Mailing Address: Texas Instruments, Post Office Box 655303, Dallas, Texas 75265 Copyright © 2023, Texas Instruments Incorporated...
  • Page 29 TI products. TI’s provision of these resources does not expand or otherwise alter TI’s applicable warranties or warranty disclaimers for TI products. TI objects to and rejects any additional or different terms you may have proposed. IMPORTANT NOTICE Mailing Address: Texas Instruments, Post Office Box 655303, Dallas, Texas 75265 Copyright © 2024, Texas Instruments Incorporated...

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