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LT8310 Output voltage is not getting 54V

Category: Hardware
Product Number: LT8310HFE#PBF

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?

 

Thank you.