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EVM User's Guide: INA220EVM
INA220 Evaluation Module
Description
The INA220 evaluation module (EVM) is a platform
to evaluate the main features and performance of the
INA220. 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 INA220EVM evaluation board.
2. Buy the
TI-SCB sensor control
3. Download and install the
Drivers.
SBOU309 – AUGUST 2023
Submit Document Feedback
board.
PAMB Windows USB
Copyright © 2023 Texas Instruments Incorporated
4. Read this User's Guide to set up the hardware.
5. Run the INA220EVM-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
INA220 Evaluation Module
1
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Table of Contents
Related Manuals for Texas Instruments INA220
Summary of Contents for Texas Instruments INA220
- Page 1 4. Read this User's Guide to set up the hardware. Description 5. Run the INA220EVM-GUI. The INA220 evaluation module (EVM) is a platform Features to evaluate the main features and performance of the INA220. The EVM supports current measurements up •...
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Page 2: Kit Contents
The INA220 senses across shunts on buses that can vary from 0 to 26 V, useful for low-side sensing or CPU power supplies. The device uses a single 3- to 5.5-V supply, drawing a maximum of 1 mA of supply current. The INA220 operates from –40°C to 125°C. -
Page 3: Quick Start Setup
7. Provide a differential input voltage signal to the IN+ and IN– nodes by connecting the signal leads to J1 pin 5 or 6 and J1 pin 3 or 4 on the EVM as explained in Current Sensing Operation. SBOU309 – AUGUST 2023 INA220 Evaluation Module Submit Document Feedback Copyright © 2023 Texas Instruments Incorporated... -
Page 4: 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 INA220 Evaluation Module SBOU309 – AUGUST 2023 Submit Document Feedback Copyright © 2023 Texas Instruments Incorporated... - Page 5 EVM. Figure 2-4 shows a convenient way to use the multiple IN+ and IN- terminals with an external shunt for this use case. SBOU309 – AUGUST 2023 INA220 Evaluation Module Submit Document Feedback Copyright © 2023 Texas Instruments Incorporated...
- Page 6 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. INA220 Evaluation Module SBOU309 – AUGUST 2023 Submit Document Feedback Copyright © 2023 Texas Instruments Incorporated...
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Page 7: Digital Circuitry
This section describes the INA220 and supporting components. U1 is the INA220 current-sensing device. C1 and C2 are bypass capacitors that are placed near the sensor to help mitigate power supply noise and provide current quickly to the device when needed. LED D1 with current limiting resistor R4 are used to indicate when the EVM is powered on. - Page 8 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. INA220 Evaluation Module SBOU309 – AUGUST 2023 Submit Document Feedback Copyright © 2023 Texas Instruments Incorporated...
- Page 9 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). SBOU309 – AUGUST 2023 INA220 Evaluation Module Submit Document Feedback Copyright © 2023 Texas Instruments Incorporated...
- Page 10 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. INA220 Evaluation Module SBOU309 – AUGUST 2023 Submit Document Feedback Copyright © 2023 Texas Instruments Incorporated...
- Page 11 2. Connect the EVM to a different USB port. • Avoid using long cables and USB hubs. • If using a desktop PC, try a USB port on the back. SBOU309 – AUGUST 2023 INA220 Evaluation Module Submit Document Feedback Copyright © 2023 Texas Instruments Incorporated...
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Page 12: Gui Operation
From this page you can set the number of EVMs you are using, and then for each EVM you can indicate the physical hardware switch settings and configure your shunt and CURRENT_LSB. Below is a description of each option and field on this page: INA220 Evaluation Module SBOU309 – AUGUST 2023 Submit Document Feedback Copyright © 2023 Texas Instruments Incorporated... - Page 13 – This shows the required sensing range to measure the Max Expected Current with the specified shunt resistor. – If a Max Expected Current is not specified, then the True Max Current field is used instead. SBOU309 – AUGUST 2023 INA220 Evaluation Module Submit Document Feedback Copyright © 2023 Texas Instruments Incorporated...
- Page 14 For convenience, register settings can be saved and loaded back later to any device with the same register map. To do this, go to File > Register Data, as shown in Figure 3-10. INA220 Evaluation Module SBOU309 – AUGUST 2023 Submit Document Feedback Copyright © 2023 Texas Instruments Incorporated...
- Page 15 – 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. SBOU309 – AUGUST 2023 INA220 Evaluation Module Submit Document Feedback Copyright © 2023 Texas Instruments Incorporated...
- Page 16 Registers and Configuration pages. – Changing the switch settings of any EVM sets that EVM as the selected EVM. INA220 Evaluation Module SBOU309 – AUGUST 2023 Submit Document Feedback Copyright © 2023 Texas Instruments Incorporated...
- Page 17 – 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 minimum value auto-populates currently in the plot. SBOU309 – AUGUST 2023 INA220 Evaluation Module Submit Document Feedback Copyright © 2023 Texas Instruments Incorporated...
- Page 18 Reset the SCB with an I2C EVM connected to use I2C. – For example, to set the INA220 with a register address of 0x4A, send the command: setdevice 10. – For this example, the EVM returns the acknowledgment and state ("idle" or "collecting") in JSON format: {"acknowledge":"setdevice 10"}...
- Page 19 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"} SBOU309 – AUGUST 2023 INA220 Evaluation Module Submit Document Feedback Copyright © 2023 Texas Instruments Incorporated...
- Page 20 VBUS 4.7k 0.01 0.1uF TP10 TP11 MNT_1 MNT_2 MNT_3 INA220AIDGSR MNT_4 CUS-14TB +3V3 +3V3 +3V3 MNT_1 MNT_2 MNT_3 MNT_4 CUS-14TB Figure 4-1. Schematic Circuitry INA220 Evaluation Module SBOU309 – AUGUST 2023 Submit Document Feedback Copyright © 2023 Texas Instruments Incorporated...
- Page 21 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 SBOU309 – AUGUST 2023 INA220 Evaluation Module Submit Document Feedback Copyright © 2023 Texas Instruments Incorporated...
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Page 22: Pcb Layout
Figure 4-6 illustrate the PCB layers of the INA220EVM. Figure 4-3. Top View Figure 4-4. Top Layer Figure 4-6. Bottom Layer Figure 4-5. Bottom View INA220 Evaluation Module SBOU309 – AUGUST 2023 Submit Document Feedback Copyright © 2023 Texas Instruments Incorporated... - Page 23 Fiducial mark. There is nothing to buy or mount. 10 mOhms ±0.5% 2W Chip Resistor 2512 (6432 Metric) Automotive AEC- 2512 PCS2512DR0100ET Ohmite Q200, Current Sense, Moisture Resistant Metal Film SBOU309 – AUGUST 2023 INA220 Evaluation Module Submit Document Feedback Copyright © 2023 Texas Instruments Incorporated...
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Page 24: 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 25 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 26 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 27 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 28 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 29 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 30 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 © 2023, Texas Instruments Incorporated...