• State
  • Locked Locked
  • Replies 2 replies
  • Subscribers 65 subscribers
  • Views 618 views
  • Users 0 members are here
Support feedback
Options
Options
Similar topics

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.

Why the GUI is always errors? TI employee come in and see......

johnliang
Intellectual 505 points
Other Parts Discussed in Thread: UCD3138

Why the  GUI  is so  difficultly?        and the manual PDF that "fusion digital power designer GUI" is not clear at all.

  • 0
    TI__Genius 17090 points

    With errors like that, it looks like there is noise on the PMBus interface. 

    The PMBus interface, like SMBUS and I2C, is a clock and data interface, which is the most noise susceptible interface.

    - Keep the lines short.

    -You may need to decrease the resistance of the pull up resistors.

    - Adjust down to 100 KHz.

    - Certainly don't do what I saw at one customer - don't twist clock and data lines together!

    - The length of the lines on the PMBus cable on the USB Interface Adapter can be too long for some noisy environments.

    If none of that works, I'd suggest putting a scope on the clock and data lines and seeing what is going on. 

  • 0 in reply to Ian Bower
    TI__Expert 4070 points

    hello You are using the wrong GUI.  Earlier this year the fusion digital power studio was branched from the designer.  Please use studio for ucd31xx  products.  This info is also mentioned in a red box on the top of the fusion designer page.

    Also there is an isolated gui user guide on ucd3138 device page.