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TPS4H160-Q1: Does not operate at low temperature (-40°C)

Ivy Jin
Expert 4625 points
Part Number: TPS4H160-Q1
Other Parts Discussed in Thread: TPS1HB08-Q1

Tool/software:

Hi team,

My customer uses TPS4H160BQPWPRQ1 in their project. The TPS4H160BQPWPRQ1 has no output when doing low temperature experiments (-40°C), but it can output normally at normal temperature and high temperature.

Test conditions: Supply 13V, load 1.3A, 4 load drive in low temperature can not output. High side control side has signal, but output side no output.

Could you please help review and give some comments?

 

Regards,

Ivy

  • 0
    TI__Mastermind 35015 points

    Ivy,

    Nothing sticks out on the schematic- however is this reproducible between multiple devices? If they switch out their current TPS4H160--Q1 with a separate TPS4H160-Q1 do they see the issue?

    Additionally, how are they loading the device? Are they using an actual load or an eLoad?

    Best Regards,
    Tim 

  • 0 in reply to Timothy Logan
    TI__Expert 4625 points

    Hi Tim,

    1. The customer has done A-B-A validation, this issue occurs on multiple chips in multiple boards.

    2. The customer simulates the actual load with a high power resistor.(1.3A/10ohm/13V). However, this problem may not be related to the load, as the customer has also validated the situation with no load, and the same problem occurs under no load.

    Let me describe the problem further.

    1. One strange point is that customer also uses TPS1HB08-Q1 and TPS2H35-Q1 on the same board, but the outputs of the two ICs are normal at low temperatures.

    2. Video 1 is normal temperature to -40°C, normal output to fault generation (HSD OUT: purple, HSD IN: yellow); Video 2 is the process of restoring to normal; The output disappears when the temperature keeps dropping to about -37~40. In turn, the output reappears when the temperature re-rises to around 0 

    As the customer's project is urgent, could you help see what else is causing the problem? Many thanks!!!

    Regards,

    Ivy

  • 0 in reply to Ivy Jin
    TI__Genius 10565 points

    Hello Ivy, 

    The schematic looks fine and shouldn’t be causing the issue here. In a separate test these devices were evaluated at -40C and had no issues in operation. I recommend using an EVM to verify the performance of a failed chip at your desired temperature.

    BR, 

    Alan