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UCC27282: Electrical failure of components, despite soldering points showing all good per X-ray examination?

Adnan Zatarah
Intellectual 605 points
Part Number: UCC27282


Tool/software:

Hello,

can you please advise regarding a customer claim about some of the delivered parts with  P/N: UCC27282DRCR ?

The customer purchased a reel with 3,000pcs, but saw 7pcs failing electrically.

The customer told us:

------  
Our quality control department has found the following parts to be defective.
Reason for complaint: Customer reports electrical failure of components,
IC4 / UCC27282DRCR is responsible VSON10 TI
The X-ray examination showed that the soldering points of the ICs are all OK and do not show any deviations or abnormalities.

-------  

Can yo uplease advise? Would a failure analysis help to find the cause of the failures?

Thank you very much

Best regards

Adnan

  • 0
    TI__Expert 8791 points

    Hi Adnan,

    Thanks for reaching out. I have a couple questions to gain more information regarding the failure:

    1. What is the customer's application/system?

    2. What are their system characteristics (VBUS, VDD, fsw, and load)?

    3. Did the customer test all 3ku?

    4. Did the failure occur at start-up, steady-state, or shut-down? Are there more operation modes?

    A failure analysis would definitely help, but let's first work with the system info on-hand.

    Thanks,
    Rubas

  • 0 in reply to Rubas Khalid
    TI__Expert 8791 points

    Hi Adnan,

    As it's been almost a month without a follow-up, I will be closing this thread. Please create a new thread if you have additional questions.

    Thanks,
    Rubas