Hi , thank you for your response.
LTC7138 regulator's output range is about from 0,8V to Vin (130V in this case)
This LTC7138 regulator is adjustable. The final purpose is to get Programmable Power Supply with the output voltage range from 0,8V to 125V, which we can obtain by changing the values of R2 or R3 resistors. Now I am on my first stages, and I just only want to make sure that my Power supply will produce the maximum output power (130V 400mA).
The DC resistance of the external inductance is about milliohms. From the measurement results, iT looks like 70 ohm internal resistance exciting in the circuit