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  1. #1
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    E-Fuse and current limiting device

    Dear all,

    I'm going to design a current limiting device for "medium voltage" lithium batteries (20 V< Vbatt <100 V). The involved currents are in the order of hundreds of Ampere.
    I'm talking about a device like this one.
    I'm considering to use the new MOSFETS with wide SOA and low RDS but I have to design the control circuits.
    Anyone has some tips about this type of circuits?

    Thanks in advance.

    Luca
    ----------------------------
    Lucast85

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  2. #2
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    Re: E-Fuse and current limiting device

    Hi,

    Fuses usually are specified with:
    * hold current
    * trip current
    * trip time
    * I^2t integral
    * peak voltage
    ....

    True I^2t calaculation is not very easy, nor with analog circuitry, nor with a digital solution.

    I recommend to read datasheets and application notes of ready to buy electronic fuses to get a clue about their function.

    Klaus
    Please dont contact me via PM, because there is no time to respond to them. No friend requests. Thank you.



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