I would build my first flyback converter.
Converter would be designed for 2A max and load device would draw about 100-200mA for most of the time with 1.8A peaks. Peaks would take a little longer so I can’t just use smoothing capacitor.
How should I select primary inductance?
Usually it is selected for changes in switch current to be 50% of max primary current. If I do the same and calculate inductance for my max current that way, current changes would be much bigger then actual current when load is 100mA only. Is it some big problem?