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MOSFET Why is the max current limit lower for DC case in SOA Curve

HARI T O1
Expert 1655 points

Dear Team,

May I know why is the max drain current limit different for DC and rest of the pulsed cases

  • 0
    TI__Mastermind 38480 points

    Hello HARI T,

    Thanks for your interest in TI FETs. In TI MOSFET datasheets, the maximum DC current is equal to the package limited maximum continuous current specified in the absolute maximum ratings table on page 1 of the datasheet. Likewise, for the pulsed curves, the top horizontal line is equal to the maximum pulsed current (IDM) specified in the abs max ratings table. For more information on how TI specs these items in the FET datasheet, please see the blogs at the links below.

    https://e2e.ti.com/blogs_/b/powerhouse/posts/understanding-mosfet-data-sheets-part-2-safe-operating-area-soa-graph

    http://e2e.ti.com/blogs_/b/powerhouse/archive/2015/05/25/understanding-mosfet-data-sheets-part-3

    http://e2e.ti.com/blogs_/b/powerhouse/archive/2015/06/29/understanding-mosfet-data-sheets-part-4-mosfet-switching-times

    Best Regards,

    John Wallace

    TI FET Applications