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TPS25942A: Basics of eFuses (SLVA862A)

Shuji Ishiwata
Genius 5905 points
Part Number: TPS25942A
Other Parts Discussed in Thread: TPS25947

Hi All,

I have a question about the eFuse application report Basics of eFuses (SLVA862A).

What is the difference between "Reverse Current Protection" and "Input Reverse Polarity Protection" in the protection function of eFuse?


Best Regards,
Ishiwata

  • 0
    TI__Guru 50475 points

    Hi Ishiwata,

    Thanks for reaching out.

    1. Reverse current protection means blocking reverse current . For eg suppose VOUT>VIN, then reverse current can flow if protection is not there.

    2. Reverse polarity protection means protecting the load and device when input voltage polarity is reversed for eg connecting reverse battery.

    Regards

    Kunal Goel

  • 0 in reply to Kunal Goel
    Genius 5905 points

    Hi Kuna,

    Thank you for your answer.

    Comparing the TPS25942A and TPS26600, I think they have the same structure because they have a NMOS and an PMOS.

    Does the TPS25942A have an "Input Reverse Polarity Protection" feature?
    Does TPS26600 have a "Reverse Current Protection" function?

    I am very grateful for your support.

    Best Regards,
    Ishiwata

  • +1 in reply to Shuji Ishiwata
    TI__Guru 50475 points

    Hi Ishiwata,

    Yes they have similar structure. Both are NMOS in back to back configuration.

    1. TPS25942 does not have inbuilt IRPP. You can use external diode like this to achieve IRPP. TPS25947 has inbuilt IRPP and RCB.

    2. TPS26600 has both IRPP and RCB.

    Regards

    Kunal Goel

  • 0 in reply to Kunal Goel
    Genius 5905 points

    Hi Kunal,

    Sorry for my late reply.

    I understand the difference between them.

    I am very grateful for your support.

    Best Regards,
    Ishiwata