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TL494: TL494I Max Duty Cyle

Savas Sahin
Prodigy 230 points
Part Number: TL494

Hi, 

I am planing to make a Buck Converter using TL494 but i am confused of max duty cycle given in the TI product page.

In the TI product page it says max duty cycle is %45, while somewhere in the datasheet it says it can operate  between %0 - %97.

Which one is correct?

All the bests,

Savas

  • +1
    TI__Guru 73215 points

    Hi,

    Pin 13 (output control) is used to program the device to operate in single ended or push-pull operation. In single ended, the two outputs are control in phase with max duty cycle about 97%. In push-pull, the two outputs are alternating high and low, each max duty typica 45%, max about 0.97 / 2 = 48.5%.