Texas Instruments INA228EVM, User Manual

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Hardware
5 SBOU241A – April 2020 – Revised June 2020
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Copyright © 2020, Texas Instruments Incorporated
INA228, INA229, INA237, INA238, and INA239 EVM User’s Guide
3 Hardware
The EVM is an easy-to-use platform for evaluating the main features and performance of the INA228,
INA229, INA237, INA238, or INA239. The EVM supports current measurements up to 10 amps, and
includes a graphical user interface (GUI) used to read and write device registers.
The EVM is intended to provide basic functional evaluation of the devices. The layout is not intended to be
a model for the target circuit, nor is it laid out for electromagnetic compatibility (EMC) testing. The EVM
consists of 2 PCBs. The smaller PCB is referred to as the EVM, and has either the INA228, INA229,
INA237, INA238, or INA239 installed. The larger PCB is referred to as the PAMB Controller, and is used
to interface the EVM with the GUI.
3.1 Features
• GUI support to read and write device registers
• Detachable EVM for custom use cases
• Conveniently powered from a common micro-USB connector
4 Operation
4.1 Quick Start Setup
The following instructions describe how to set up and use the EVM.
Step 1. Download and install this driver: http://www.ti.com/lit/zip/sbac253
Step 2. Attach the EVM to the PAMB Controller as shown in Figure 1 .
Step 3. Set the switches to EVM mode:
1. For the INA229 and INA239: Make sure that SW1 is set to CS3.
2. For the INA228, INA237, and INA238: Make sure that both SW0 and SW1 are set to
GND.
Step 4. Connect the EVM to a PC using a USB cable.
1. Insert the micro USB cable into the PAMB Controller onboard USB receptacle J2.
2. Plug the other end of the USB cable into a PC.
Step 5. Access the GUI from one of these links in either Chrome or Firefox:
1. INA228EVM: https://dev.ti.com/gallery/info/4910879/INA228EVM_GUI/ver/1.0.0/
2. INA229EVM: https://dev.ti.com/gallery/info/4910879/INA229EVM_GUI/ver/1.0.0/
3. INA237EVM and INA238EVM:
https://dev.ti.com/gallery/info/4910879/INA237_238EVM_GUI/ver/1.0.0/
4. INA239EVM: https://dev.ti.com/gallery/info/4910879/INA239EVM_GUI/ver/1.0.0/
Step 6. Connect the GND reference of the external system to the GND node of the EVM (pin 1 of J1).
Step 7. Provide a differential input voltage signal to the Vin+ and Vin– nodes by connecting the signal
leads to J1 pin 5 or 6 and J1 pin 3 or 4 on the EVM as explained in
Section 4.2.2 .