App note from Maxim Integrated about designing isolated flyback converter using their micropower boost converter IC for auxiliary and industrial applications. Link here
Flyback converters are widely used in isolated DC/DC applications because of their relative simplicity and low costs compared to alternative isolated topologies. The RS485, isolated CAN transceivers, auxiliary power supplies, etc. are a few applications of the low-power flyback topology. A flyback converter can be designed using a MAX17291 boost converter with a 3.75kV isolation.