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TPS546B24A: Switching frequency 650Khz Makes Peak to Peak current Negative in excel

Rajat Singh
Intellectual 350 points
Part Number: TPS546B24A

Tool/software:

Hi Team,

I am getting Inductor Pk-pk Value as design waring. Shall I ignore it or change switching frequency to Lower to make pk-pk positive?

Many Thanks

Rajat

  • 0
    TI__Genius 11386 points

    Hi Rajat,

    The inductor value may be too large, which could result in the pin programmable ILOOP gain options being too low to achieve an appropriate current and voltage loop bandwidth.

    While there’s no need to change the switching frequency, I recommend reviewing the COMPENSATION_CONFIG options available for the selected inductor. If you find that there are no suitable options to meet your transient requirements, then consider reducing the inductor value. Otherwise, you can disregard the warning.

    Thank you,
    Tomoya

  • 0
    Intellectual 350 points

    Hi Tomoya,

    I have selected the inductor value which is L (target). Reducing or increasing the inductor value is not helping.

    can you send me a test e-mail on my email id so I can share the calculation sheet for your review.

    rajat.singh@amd.com

  • 0 in reply to Rajat Singh
    TI__Genius 11386 points

    Hi Rajat,

    Sure, you can send me the calculation sheet to my email: t-ide@ti.com

    Thank you,
    Tomoya