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TPS5430: Inquiry about damage to the Filter Capacitor connected to the BOOT pin of TPS5430

Grady Lee
Genius 4405 points
Part Number: TPS5430


Tool/software:

Hi, TI expert

The customer is using the product by applying TPS5430.

Currently, during the installation and operation of the product on site, a case occurred where the Filter Capacitor connected to the BOOT pin of TPS5430 was damaged.

The design is input voltage 24VDC, output voltage 12VDC, and the Output Filter Cap is 100uF/25V Tantal.

Is there any expected cause for the damage of the Output filter cap?

Are there any cases or cases where the output capacitor of the DC-DC converter is damaged?

Please check. Thank you.

  • 0
    TI__Mastermind 19441 points

    Hi Grady 

    Thanks for writing to us!

    Grady Lee said:

    Currently, during the installation and operation of the product on site, a case occurred where the Filter Capacitor connected to the BOOT pin of TPS5430 was damaged.

    Correct me if I am wrong, from looking at picture it appears the output tantalum cap is damaged.  

    Could you elaborate what was the test scenario when damaged occurred? 

    Grady Lee said:

    Are there any cases or cases where the output capacitor of the DC-DC converter is damaged?

    Yeah, output capacitor damage is more likely during output over voltage events 

    Thank you

    Regards

    Onkar Bhakare

  • 0 in reply to Onkar Bhakare
    TI__Mastermind 19441 points

    Hi Grady

    I am closing this thread due to inactivity. Feel free to reopen it at any time

    Thank you

    Regards

    Onkar Bhakare