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TPS61196-Q1: Inquiries about power dissipation

MJ Jeon
Genius 5240 points
Part Number: TPS61196-Q1

Hi, TI support team

We are reviewing the TPS61196-Q1 product.

Power dissipation is shown as 1W at room temperature of 25 degrees. Please check if the PD value can be calculated as 1W even at an ambient temperature of 80 degrees.

If separate calculations are required, please let us know how to calculate them.

Thanks.

Regards,

MJ

  • 0
    TI__Mastermind 19430 points

    Hi, MJ

    What is the target temperature in 80 degree you want?

  • 0 in reply to Zhiqian Wu
    Genius 5240 points

    Hi, Zhiqian

    In response to inquiries from our customers, we will share additional information as follows.

    We are reviewing the TPS61196-Q1 product, and the operating temperature conditions (ambient temperature) are as follows.

    -40~+80 degrees

    Product specifications: Vin=24V, Vout=35V, Iout=1.3A

    When operating under the above conditions at room temperature (25 degrees), the temperature of the top case is approximately 65 degrees.

    If the ambient temperature is 80 degrees, it is expected to be approximately 120 degrees.

    Will there be a situation where the operating conditions are not met?

    Additionally, we confirmed that PD is listed as 1W at room temperature under the above conditions.

    How does PD change when the ambient temperature reaches 80 degrees?

    Thanks.

    Regards,

    MJ

  • 0 in reply to MJ Jeon
    TI__Mastermind 19430 points

    Hi, MJ

    The switching FET is external. So the most PD is from headroom voltage of current sink. So it is similar for 80 degree and 25 degree.