I have used below the same circuitry and components for our application except R13 (10K resistor) is not mounted.
I have used this reference design from the analog technical article document.
Below are the observations while the testing.
We are applying 50V as an input.
INTVCC = 10V.
Sout pin = 10V.
Voltage across the R7 = 0.29V.
Voltage across the C13 = 0.65V.
pin14. gate is not turning on. we have checked with changing a mosfet and tried it again, but its not working.
We are facing the issue that we didn't get anything in output voltage.
Could you please help me with this?