Hello Team,
I am working on the UCC28780 and I am using the demoboard EVM 021 and the Mathcad File to design an ACF.
I don't understand how the start-up is performed and how the brown-in protection is set up.
On the demoboard, if Vin = 25V, the UCC can start-up through the SWS pin but why there is no Vout until the Vin reach ~ 85V ?
Is it because the UCC check also the Vin through VS and compare it with a brown-in threshold ?
Moreover, how can we set the brown-in threshold ?
Thank you for your answer.
Best regards,
Maxime
