I need a low-power dc/dc converter with high isolation voltage between the primary and secondary-side of the switching transformer. The input voltage is 15V while the output voltage equalizes to 25V. The output power is around 5W. I decided to design a DCM Flyback dc/dc converter due to its simplicity and cost. As far as I understood, if I could make a distance between the primary and secondary windings, maybe, I can reach to 10kVrms isolation. Now, there are two questions as follows:
1- Can I use the EFD ferrite core with the below bobbin?
2- Is this type of bobbin in contrast with the Flyback operation?