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TL1451A: PWM frequency

NAOKI AOYAMA
Guru 11215 points
Part Number: TL1451A

Hello,

Our customer use the TL1451A, have a question about PWM frequency.

How do they decide the value of the RT and CT to get a certain frequency?

Do you have a formula?

Regards,

Naoki Aoyama

  • 0
    TI__Mastermind 46905 points
    Hi Naoki,
    in the FIgure 3 of the datasheet, we can see an image about the RC value and the frequency. hope this is good enough the define the RC value. it is old device. I can't find the formula to calculate the frequency.
  • 0 in reply to Jasper Li
    Guru 11215 points
    Hi Jasper,

    Thank you for your fast reply.
    Well I see.
    I don't understand why the customer use such a old device.
    I will suggest the customer to refer the Figure3.

    Thanks,
    Naoki Aoyama