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LM25066I: GUI for Telemetry

Part Number: LM25066I
Other Parts Discussed in Thread: TPS544C20, TPS53681, , LM25066, LM25066EVK


I am looking for a GUI we could use to interface with this part (read current, temp, etc)? I am thinking something similar to Fusion Digital Power Designer which we use TPS53681 and TPS544C20 and similar.

I have been trying with PI-Commander-HotSwap but it doesn't seem to detect the device on the i2c chain. Is this the proper GUI for this part? If so, can you please let me know if I am missing something on the setup?

For reference, I am using a USB to I/O dongle which is the one I use with Fusion Digital Power Designer.

Here is the PI-Commander not finding any devices, but I do find/communicate with other Texas Instruments devices with Fusion GUI.

  • Hi Carlos,

    Welcome to E2E !!! Thanks for reaching out to us. PI-Commander is the GUI for LM25066I. Please try to uninstall and install once again after downloading from Kindly make sure drivers for USB Interface Adapter EVM are properly installed in your system. 

  • Hi Carlos,

    Any USB to GPIO adapter, such as Aardvark I2C/SPI Host Adapter, FTDI Dongle, etc. can be used to communicate with LM25066. However, pin to pin compatibility must be ensured between the adapter and device SCL, SDA, SMBA#, and GND pins. That’s why, TI USB Interface Adapter EVM doesn’t work with LM25066EVK because of mismatch in pin to pin connections.


  • Hi Avishek,

    I believe I didn't explain myself well enough, we have actually implemented this device on one of our own boards along with a few other switchers (TPS544C20, TPS53681). Anyways, I was finally able to communicate with our LM25066I using an Aardvark I2C/SPI host but not with USB-GPIO.

    However, now the IIN readback on PI-Commander GUI doesn't match the real measurements or even the read back from our on-board I2C host.

    Does PI-Commander need additional tuning?


  • Hi Carlos,

    The value of current sense resistance in PI-Commander GUI should be same as the actual hardware.