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TPS25947: Power Design Review

Part Number: TPS25947


We are using TPS259470ARPWR in our design for 12V Hotswap and ORing application.
Current Requirement is 1.5 A.
Kindly review the attached schematic and calculator sheet and provide your valuable feedbacks

Ashish Kumar Pandey
Research Engineer

  • Hi Ashish,

    Nice to meet you! 

    Please see my comments:

    1. I think you are doing Power Muxing , since AUX signal of master is going into OVLO pin of slave. So you don't need resistor ladder on OVLO pin of slave.

    2. You have pulled FLT and AUXOFF to 12V which is exceeding abs max rating of pin. Please pull these pin to less than 5V

    3. Input TVS have max clamp exceeding the abs max input of 28V to device. Please select a TVS like SMAJ16A that will clamp less than abs max of 28V.\


    Kunal Goel

  • Hi Ashish ,

    Let me know any further query. Can I close this thread?


    Kunal Goel


    Please click "This resolved my issue" button if this post answers your question.