How to interleave two TL494

[brodo]

I am designing a 400W buck which need to be done using 2x TL494 in an interleaved way.
How can I arrange clock timing circuit to achieve a proper 180 deg. phase shift ?

 

[red_alert]

Check this app note: https://www.ti.com/lit/an/slva001e/slva001e.pdf

On page 16, there are detailed explanations about (external) clock sync.