Demonstration circuit 541A is an isolated synchronous push-pull converter featuring the LTC3723-1, LTC3901, LT1431 and LT3710. The design provides an isolated 3.3V at 40A and 2.5V at 10A from a 48V telecom (36V to 72V) input voltage. Isolation voltage is 1500VDC.
The demo board also can provide 3.3V @ 50A with the 2.5V output disabled.