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TPS1HTC30-Q1: TPS1HTC30-Q1 Thermal shutdown threshold

Sudesh Bhar
Prodigy 60 points
Part Number: TPS1HTC30-Q1

Tool/software:

Hi TI Team,

I want to use TPS1HTC30-Q1 as high side switch. My current consumption is 0.6A . This high side switch comes with Rds on  of 30m ohms. My total power dissipation is very less around 0.009W.

www.ti.com/.../TPS1HTC30-Q1 

The ambient temperature of environment where I want to use this IC is 60°C-64°C. The IC comes with inbuilt thermal shutdown. This IC has operating range from -40°C to 125°C but the relative thermal shutdown threshold is 60°C. I have a doubt here. Does this mean that as soon as the ambient temperature is in range of 60°C. to 65°C the IC will go into thermal shutdown mode. Please let me know if this interpretation is correct.

Thanks & Regards

Sudesh

  • 0
    TI__Expert 7721 points

    Hi Sudesh,

    No, so what the highlighted areas in the images above are saying is that if the temperature of the FET increases very rapidly in comparison to the controller, meaning the difference is greater than 60°C, then the device will go into relative thermal shutdown. The difference in the temperature of the FET and controller has to be 60°C, not the device itself. 

    Please let me know if this makes sense.

    Best Regards,

    Rishika Patel