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TMCS1133: Load current capability

Harry Ma
Intellectual 2650 points
Part Number: TMCS1133

Tool/software:

Hi Team

If the load current is higher than short circuit output current, Will the hall sensor be damaged? 

If Yes, what the performance of hall sensor and pin resistance? 

  • 0
    TI__Genius 17360 points

    Hello, 

    Thank you for your post.

    The typical 50mA of short circuit current describes the sinking and sourcing ability of the output stage. 

    What is the amount of current that you are wanting to load the output with? 

    You could consider increasing the sinking and sourcing capability of the output stage by implementing an output buffer stage. 

    Best Regards, 

    Joe

  • 0 in reply to Joe Vanacore
    TI__Intellectual 2650 points

    Hi Joe

    Got it.  what I wanna further understand is if the load current is higher than 50mA, it will cause the TMCS1133 damaged? or there is some protection circuit to protect internal circuit?

    Why I ask this question is customer found some damaged Hall sensor in their factory, so they wanna understand if this is a potential reason.

  • 0 in reply to Harry Ma
    TI__Genius 17360 points

    Hi Harry, 

    In theory the device should not be damaged from going into the short circuit current condition.

    That being said, I need to know what they are loading the output with. If there is severe inductance, this can create a back EMF into the output pin and damage ESD cells. 

    Can you please provide the schematic and how they are testing the short circuit current condition?

    Also is this repeatable damage to the device?

    If you have a scope capture of the output voltage, please provide that as well. 

    Thank you,

    Joe