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UCD3138HSFBEVM-029: Matching Sample Project to HSFB Firmware

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Replies: 3

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Part Number: UCD3138HSFBEVM-029

Hello,

I am trying to utilize some of the features of the UCD3138, such as feed forward and current loop control. In the sample project  (Offline mode>UCDB31xx Isolated Digital Power Controllers > HSFB Center-Tap) when I click the 'Design' tab it shows me many features, as seen below.

However, when I connect the device flashed with stock firmware (http://www.ti.com/tool/UCD3138FW-HSFB), the program appears as follows:

Note the lack of parameters and tabs, such as Current Loop and Feed Forward Loop. The stock firmware also shows up with a project name of  'DC-DC BUCK'. If I try to load the project from the sample (the .xml), I receive an error.

The lines in question for the error above can be seen below

I have looked in the code of the stock firmware using Code Composer Studio, and it appears that Feed Forward is programmed in. The PMBus command, FA, is in there also. As such, I would assume that it would show up in the GUI. I have tried everything that I can think of to get this to work and I would very much appreciate any assistance.

Software: Code Composer Studio 6.2.0.00048, and Fusion Digital Power Studio 3.0.36

Thank you

  • Hello Scott,

    We are looking into reproducing this and will get back to you.  It is strange that it says Buck instead of HSFB.

  • In reply to Amiel Hussain:

    Hello Scott,

    We are still looking into this but can you replace the line in the firmware:

    #define SETUP_ID            "VERSION1|BUCKSYNC000"                   //Generic setup id

    with

    #define SETUP_ID            "VERSION1|HSFB001"                //Generic setup id

    Please recompile and kindly report back.

  • In reply to Amiel Hussain:

    Hi Amiel,

    I modified SETUP_ID in pmbus_topology.h as you outlined above. The name in Fusion Digital Power Studio now says DC-DC HSFB, and the tabs that I was looking for now show up. The desired functionality is now present.

    Thank you!

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