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TPS62740: How to calculate the /measure Switching Frequency of TPS62740 IC

Vinayak Potadar
Prodigy 200 points
Part Number: TPS62740

Hello TI team,

We are developing ultra low power device. we are using TPS62740 buck converter on our PCB. we wanted to calculate/check the frequency range. 

Our device requirement.

V(in) : 3.6V

V(out) : 2.5V

I(out) : up-to 100mA.

we request to you assist us on this issue.

Thank you in advance.

  • 0
    TI__Genius 12200 points

    Hi Vinayak,

    There is not some specific equation to calculate the switching frequency during PWM mode in DCS control, it depends upon various factors including losses, minimum off time, propagation delays etc. 

    The below equation can help in calculation of switching frequency for light loads (PSM Mode)

    For more detailed understanding of switching frequency variation in DCS control, you can have a look at this application note also. (https://www.ti.com/lit/an/slyt646/slyt646.pdf)

    Best Regards,

    Farheen

  • +1 in reply to Farheen
    TI__Genius 12200 points

    Hello Vinayak,

    Do you have any further question related to this thread? If not, kindly close this thread by clicking on resolved button.

    Thanks and Best Regards,

    Farheen