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TPS54521: Two question about current limit function

Satoshi
Guru 19595 points
Part Number: TPS54521

I have two question about overcurrent protection for TPS54521, please let me know below.

①Are there maximum value for High side and low side current limit?

　Datasheet is described only min and typ value.

②Which is current limit function on the start up timing (soft start occurring)

　・Cycle by cycle with Hiccup (Normal)

　・Hiccup is disabled

　If Hiccup is disable, please let me know about the condition for enable Hiccup, and where is written on any document.

Best regards,

Satoshi

  • 0
    TI__Mastermind 47510 points

    Hi Satoshi,

    Q1: We don't have max current limit value available. But Fig 13 shows the high-side current limit over temperature and input voltage.

    Q2: The current limit function is same as cycle by cycle with hiccup during normal operation and start up.

    Hope this helps,

    Thanks,

    Nancy