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TPS2051B: Safe operating area for internal FET

Satoshi
Guru 19575 points
Part Number: TPS2051B
Other Parts Discussed in Thread: TPS2031, TPS2032, TPS2065,

Is there SOA (Id vs Vds) spec information for below power switches?

・TPS2031

・TPS2032

・TPS2065

・TPS2051B

Or, I want to know how much time OK to reach current limit threshold.

Best regards,

Satoshi

  • 0
    TI__Mastermind 18031 points

    Hi Satoshi,

    Don't have this curve.

    But, according to Rds(on), the Vds and Ids can be drawn.

    ABS and recommended value  can be your reference.

    I think the current limit value doesn't have related to the time.

    For TI's policy, I will first click resolved button.

    If you have any other concern, contact me any time.

    If you think resolved, please help click 'Issue is solved button'.

    Thanks.

  • 0 in reply to Ziv Zhang
    Guru 19575 points

    Ziv-san

    Thank you for reply,

    I understood that not have SOA curve.

    Background; customer hope to know whether below inrush current problem or no problem.

    (For example, attached waveform is TPS2051BDR)

    I calculate based on Id = VDS / Rds_on.

    It is probably no problem, correct? 

    ※Blue: Vin, Yellow: EN, Green: Vout, Red: Iout, 500μs/div, Ta: 50℃

    Best regards,

    Satoshi