We are using the LM5116 to step down the input voltage from 12V to 100V input to 12V. But when we power the LM5116 with an input voltage below 17V it outputs 3 Volts and if the output goes above 20V then the output voltage is unstable.
Here is a link to get a pdf of the schematic dl.dropboxusercontent.com/.../SCH%20_%2018.pdf
Thanks and regards