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Original question:

TPS25200: Low & High Current Limits

TPS25200: How to limit output current by efuse

Shaquille Chen
Intellectual 1770 points
Part Number: TPS25200

Hi team,

Customer want to know how TPS25200 limit output current when output load higher than current limit setting?

Thanks

Shaq.

  • 0
    TI__Guru** 105791 points

    Hi Shaq,

    Thanks for reaching out!

    I will reply in detail tomorrow. 

    BR,

    Rakesh

  • 0 in reply to Rakesh
    TI__Guru** 105791 points

    Hi Shaq,

    In a steady-state condition, the integrated power switch is fully turned on (just like a discrete switch) to minimize voltage drop in the power path. If at any point the load current reaches the set current-limit level, ILIM, the gate control transitions the integrated power switch into linear mode of operation (the gate drive to its internal integrated power switch is reduced). This increases the on-resistance and corresponding voltage drop across the eFuse to provide a constant output current.

    Please refer Chapter-2 in http://www.ti.com/lit/ml/slyy168/slyy168.pdf for more information.

    Best Regards,

    Rakesh