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Original question:

TPS55165-Q1: days in low-power mode lead to IC dying and no ouput

TPS55165-Q1: Low power mode and no load current

Egemen Aksoy
Intellectual 305 points
Part Number: TPS55165-Q1

Hi,

I think the SMPS is drawing too much current when the system I designed goes into sleep mode so I want to use PS pin to swith the SMPS mode in to low power mode. I found a previous (thread) about that low power mode causes something unexpecected outcomes. But the attached thread was not answered. Is there a problem something like mentioned in attached thread?

Also I am wondering that how much current does the TPS55165 draw when there is no load?

  • 0
    TI__Mastermind 20260 points

    Hi Egemen,

    Is this already put into production? We now have released new Buck-Boost converter TPS552892 which is four-FET integrated and better performance.

    TPS55165 has limitation at low power mode, max output current is 50mA. So is it possible to change the IC at present?

    When the load current is 1mA, the input current is 582uA at 12Vin,5Vo.

    Vin VOUT Iout(A) Efficiency Iin DMM
    12 5 0.001 71.75587954 0.000582008

    Regards,

    Bryce

  • 0
    TI__Mastermind 20260 points

    Hi Egemen,

    We have not seen an update from you for two weeks, so I assume the questions are answered and the issue is solved.

    I close this thread now. If there is still something open, please reply and the thread will get opened again.

    If you have any other question or of the thread has been locked, please open a new one.

    Clicking the Resolved Button also helps us to maintain this forum.

    Best regards,

    Bryce