UCC2897A: T(on) and T(off) Variations

Part Number:UCC2897A

Hello,

Over temperature, do Ton and Toff vary proportionally, or do they vary asymmetrically over temperature.  I can understand (and expect) the switching period varies over temperature.  What I’d like to better understand is how Ton and Toff relative to each other can vary, which can affect the actual maximum duty cycle.

Thank you,

Ryan B.