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CCS/UCD3138064AEVM149: Help getting started with Digital Power labs

Bob Flanigan
Prodigy 20 points
Part Number: UCD3138064AEVM149
Other Parts Discussed in Thread: UCD3138064A

Tool/software: Code Composer Studio

I'm trying to go through the Digital Power labs for the UCD31xx and am having some trouble getting started.  I can compile and download firmware to my EVM 149 board but don't get a response to the DEVICE_ID command from the UCD31xx GUI after download.

I think the problem I'm having is that the EVM I purchased uses the newer UCD3138064A chip and the CCS source code used in the labs doesn't support this newer chip.

Is there a more up to date version of the source code for the Digital Power labs that supports the newer chip? 

Thank you. 

  • 0
    TI__Genius 17090 points

    If your firmware is not for the right device, you should get a message like this from the GUI:

    Error: The firmware selected with device id: UCD3100ISO1 is not compatible with the IC: UCD310064A.  Please select another firmware file.

    If you get that error, you need to right click on the project name in project explorer and select build options.  Select CCS General and go to configuration management, and make the program for either 064 or 064A into the default and recompile and link. 

    If you are already using the 064 or 064A version of the program, you probably need to connect the Fault3 pin to ground.  There is a hardware backdoor that clears the checksum and resets the part if Fault3 is high. 

    I strongly suggest that you change the download settings to not write the checksum.  If you write the checksum, you run a real risk of locking up the part and turning it into a bad piece of jewelry instead of a good part. 

  • 0 in reply to Ian Bower
    Prodigy 20 points
    Thanks Ian, connecting Fault3 to ground did the trick.

    I don't remember them explicitly calling that out in lab #1 or the EVM149 users guide but they do say to ground that pin in lab #2.

    Thanks again.