Demonstration circuit 888A-A is a high power isolated synchronous forward converter with synchronous secondary side control featuring the LTC3725 and LTC3706. When powered from a 36-72V input, a single DC888A-A provides an isolated 3.3V at 50A in a quarter-brick footprint. If higher output current is required, multiple DC888A boards may be stacked together using on-board connectors for a complete PolyPhase current sharing solution.