Stability problem with LTC3566

Hello.

I'm using the LTC3566  and the buck-boost converter is unstable. I would like to know if are there some design tool for the LTC3566?

An application note with one design example will give me some help too.

The datasheet (https://www.analog.com/media/en/technical-documentation/data-sheets/3566fb.pdf) don't have many informations about the feedback loop. 

Thanks.