The PMP10861 uses active clamp forward converter for an isolated 24V to 12V/3.4A conversion. Reverse input connection: output over-current protection: output over-voltage protection: input inrush current limiting circuit are integrated in this board. With wide 9-36V input voltage range: over 89.5% peak efficiency is achieved with 24V input voltage. All the components temperature rise are less than 30oC at full load condition.