TPS54519: not able to get 1.8 output voltage

Hi Team,

Good day.

A customer is using trying to simulate TPS54519 Buck converter in tina TI with input voltage of 5v and required output voltage ov 1.8v however, they are not able  to get 1.8V output voltage.

The models used are from ti.com attached below with capacitor, and resistor values changed.

slvmbs8.tsc

slvmba0.tsc

slvmb99a.tsc

Would you kindly check?

Thanks in advance.

Regards,

Marvin