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Webench power designer sorting by nominal efficiency bug?

Tasos
Prodigy 10 points
Other Parts Discussed in Thread: TPS62933

Hello,

I'm trying to decide on which buck regulators to evaluate for an upcoming project.

For this purpose I used webench, with the relevant requirements set:

However, when I try to sort the solutions based on "Nominal efficiency", it's as if the tool can't sort the results properly. The sorting seems effectively random.

Am I missing something or is this a bug?

,

By the way it would be helpful if there were columns for quiescent current and available packages in Table view, these are also important design parameters in many cases.

  • 0
    TI__Intellectual 2070 points

    Hi ,
    The incorrectness of sorting with respect to "Nominal Efficiency" is a bug, we were able to replicate the issue and we will look into it.
    To add feature like "Quiescent Current" and "Package" as additional column, currently it is not available. We will check with software development team in this regards and let you know. Please be informed that, adding these features would take longer time than usual. 
    We'll keep you posted regarding the same. 
    Thank you

    Best Regards,
    Sateesh A G 

  • 0 in reply to Sateesh Goudappanavar
    Prodigy 10 points

    Hello Sateesh,

    Thank you for the quick response.

    FYI I have discovered another minor bug in Webench in the "Create a new DC/DC design" form, that you may wanna check out.
    Sometimes if you try to search for the full part number (e.g. TPS62933DRLR) it says it's unavailable.
    However, after the partial part number (e.g. TPS62933) is accepted the "View design" window mentions the full part number (TPS62933DRLR).

    Screenshots:

  • 0 in reply to Tasos
    TI__Intellectual 2070 points

    Hi 

    Please be informed that this is not a bug, all the Power IC's available on TI.com are associated with Generic part number and orderable part number. 
    TPS62933 is a Generic part number and TPS62933DRLR is orderable part number where "DRLR" is a type of package. 
    You can find these details in respective datasheet on page no 3 under section 6 & 7. 
    To search any device we are supposed to enter generic part number in the below highlighted area 



    For quick reference, please find the attached image below. 
    Thank you for reporting your query.

    Best Regards,
    Sateesh A G 

  • 0 in reply to Sateesh Goudappanavar
    Prodigy 10 points

    Yes, I am aware of the difference.
    However it is somewhat strange/unexpected that one stage of the application only supports the generic part numbers, while the next stage only supports orderable part numbers.

  • 0 in reply to Tasos
    TI__Intellectual 2070 points

    Hi ,
    One IC can have multiple orderable part numbers, The current WEBENCH algorithm searches the generic part number in the database. Once the device is found , WEBENCH goes to next stage to get all the details of IC including orderable part number. This will help us to search the device quickly also user is familiar with generic part number instead of orderable part number.
    Thank you

    Best Regards, 
    Sateesh A G