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TPS1HB16-Q1: USB Type-C 1A / 3A Current-Limited Switch or eFuse

Ue
Genius 16485 points
Part Number: TPS1HB16-Q1
Other Parts Discussed in Thread: TPS2596, , TPS1HB50-Q1, TPS1H100-Q1

Hi all

My customer has USB Type-C ports (sink) where he wants to implement a 1A or 3A current limit, ideally resistor adjustable.

Although he is only using 5V/3A max the current-limiting device has to withstand 21V to prevent damage in case a user plugs-in a non-compliant source.

What device would you suggest for this application ?

High-Side Switch, eFuse, other ?

Thank you and best regards

Ueli

  • 0
    TI__Mastermind 23220 points

    Hi Ueli,

    A high side switch is made for rapid changes in impedance at the output and do not regulate voltage.. eFuses such as the TPS2596 are also resistor programmable.  

    The 1A to 3A current limit will also be too small of a value for the TPS1HB16-Q1. If a 3A limit works, the TPS1HB50-Q1 (A version) has a current limit range of 1.6A to 8A. If the nominal DC load current is between 0 and 4A and a current limit of 1A is needed, the TPS1H100 may work better. Again, the high side switch is made for rapid changes in impedance at the output. They can withstand the 21V that has been mentioned but do not protect the load from over-voltage.

    In addition, see this training presentation for more information on the differences between the eFuse and High Side Switches to ensure it fits your application. 

  • 0 in reply to Anthony P Pham
    TI__Genius 16485 points

    Hi Anthony

    Thank you for the quick reply and for pointing to the  TPS1HB50-Q1 / TPS1H100-Q1 and the TPS2596.

    I appreciate your feedback.

    Best regards

    Ueli