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TPS54231: Rds (on) Plot request for 24V Vin

Part Number: TPS54231

Hi,

May I know if there's any plots available for Rds(on) when Vin=24V? From datasheet it only shows the Rds(on) plot when Vin=12V hence I'll need support on the plot for Vin=24V to make some decision on my current circuit design. Thanks.

Regards,

Leo

  • Hi Leo,

       We dont have this information in the datasheet. We will check if this data is available and get back to you.

    regards,

    Gerold

  • Former Member
    0 Former Member

    Hi Leo,

    Rdson is mainly determined by gate-source voltage, and the internal driver voltage for the gate-source voltage should be nearly no difference at the condition of 12Vin and 24Vin. So the Rdson-Temperature curve should be the same between 12Vin and 24Vin. 

    Actually, I want to remind that during normal operation the temperature under 24Vin is higher than temperature under 12Vin, which will make the actual Rdson of 24Vin is higher than 12Vin. You should focus on the temperature and do iteration for temperature and Rdson calculation, and Webench tool helps this actually.

    Thanks.