This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

UCD3138A: Compensator design in Fusion Digital Power Studio

Part Number: UCD3138A
Other Parts Discussed in Thread: UCD3138

When setting coefficient of the compensator in LLC Half Bridge, using Real Zeros model, please let me know about the following:

1. Definition of Alpha and relationship with Fp.

2. How is the setting range, especially the minimun value, of Fp determined?

3. Transfer function and DC gain of the power stage shown In the Bode plots window.

Thank you for your cooperation.

Best regards,

Masahiko Hirokawa

  • Hello,

    I couldn't open E2E website yesterday because my internet has issue. Regarding to your questions, the answer is not straight-forward. I have to check the expert who wrote transfer functions for GUI.

    Actually, you can get an application note " UCD3138 Control Theory" from the website.

    Thanks,

    Sean

  • Hi, Masahiko,

    Have you found the  UCD3138 Control Theory app note? If not, I can forward it to you. You can email me your email  address to s-xu@ti.com.

    Thanks,
    Sean

  • Hello, Sean,

    I can get the UCD3138 Control Theory, and understood the setting range of Fp.

    Although, when I close the GUI after editting parameters, I can not open it again with the following message.

    Fusion Digital Power Tool Fatal Error

    Error loading or running application library: 呼び出しのターゲットが例外をスローしました。

    Please let me know the countermeasures.

    Thank you for your cooperation.

    Best regards,

    Masahiko Hirokawa

  • Hello Masahiko,

    Can you provide the steps to the best of your ability to reproduce this error?

  • Hello, Amiel,

    The procedure is as follows:

    1. Uninstall the Fusion Digital Power Studio

    2. Install again to C:/Program files (x86)/Texas Instruments/Fusion Digial Power Studio

    3. Open Sample Project->UCD31xx Isolated Power Controllers->UCD31xx LLC Half Bridge

    4. Select Design Mode and edit Stage Parameters and Coefficients

    5. File->Exit without Save

    Thank you for your advice.

    Best regards,

    Masahiko Hirokawa

  • Hello Masahiko,

    1. I having trouble reproducing the error.  When you are selecting the sample project you are in offline mode correct?  And the error you are experiencing is that when you try to run online mode or offline mode?

    2.  Can you send me the zipped data folder located here: C:\Program Files (x86)\Texas Instruments\Fusion Digital Power Studio\data ?

  • Hello, Amiel,

    1. The error ccurrs when I  run in the offline mode.

    2. Please let me know an address to send the zipped data.

    Thank you for your support.

    Masahiko Hirokawa

  • Hello Masahiko,

    When you click "reply" there is a button for an attachment.  Thanks!

  • 2502.data.zip

    Hello, Amiel,

    I have inserted the data files above.

    Thank you for your coopearation.

    Masahiko Hirokawa

  • Hello Mashiko,

    Can you run the application as "Admin" and let me know if you have the problem.  When I used your data folder and admin mode I did not have a problem.

  • Hello, Amiel,

    When I run the Fusion Design Offline as an administrator, but the same error message appeared.

    Thank you for your cooperation.

    Best rgards,

    Masahiko Hirokawa

  • Hello Masahiko,

    1. Can you do a fresh install in admin mode and then start the application in admin mode, open the LLC sample project like you have done before, and then close and reopen in admin mode.  Does the error occur again?

    2.  If the error continues please send me the data folder again. 

    3. Please confirm which version of the GUI you are using.  Also what operating system are you using?

    4. If you save the project before exiting with are you able to open the GUI and load that project file or are you having the same problem?

    Thank you for your time.

    If you are still having an issue, if you delete the *.xml files in the Data folder it should re-open.  I will also look further into the issue.

  • Hello, Amiel,

    data2-15-21.zip400V48V21A2-15-21DC-DC LLC @ Address 89d Project.xml

    The results are as follows:

    1. When re-install, start, open the LLC sample project, close without editting, and re-open in admin mode, the error did not occur.

    3. Version of the application is 3.0.51, and OS is Windows Pro Version 1909.

    4. When saving the project to the local directry before exiting, I can not re-open the application.

    Attached are the xml file and the data folder.

    Thank you for your support.

    Masahiko Hirokawa

  • Hello, Amiel,

    1. When I delete the following two xml files in the data folder, I can open the application.

    prefs-dpgui.xml

    prefs-shared.xml

    2. Editting the LLC sample project and save in the same data folder, I can re-open and access the created project.

    I appreciate your advice.

    Best regards,

    Masahiko Hirokawa