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TPS4H000-Q1: Temperature rise problem

Peter Xu
Expert 6070 points
Part Number: TPS4H000-Q1

Tool/software:

Hi team,

My customer tested 70 degree Celsius temperature rise. It is abnormal. I do not have any waveform now. Can you tell me what waveforms and materials you need to check?

Voltage: 13.5V Current: 300mA

They tested with a 47 ohm resistor.

Regards,

Peter

  • 0
    TI__Mastermind 29100 points

    Hi Peter,

    -Does this happen on one part or multiple?

    -Is the thermal pad soldered to copper? Or is it floating/contacting the PCB FR-4?

    -What is the current limit/current limiting resistor?

    -What channels are active, and which have 300mA through them? Or is it 300mA combined?

    -Can you provide a waveform with VS, VOUT (that has current on it), ILOAD (whichever channel is active), and STx/FAULT?

    Thanks,

    Patrick