The SPoE high frequency 200KHz power transformers offer levels ranging from 3 to 27 watts, voltages from  9 to 57 volts DC, voltage output on the secondary from 3.3V to 15V_DC and isolation of 1500V from primary to secondary.  There is also an auxiliary 20mA input (as shown in the diagram) which aids in powering controller ICs after start up which require indirect feedback to control the output and detection of demagnetization.