DC-DC

In a multistage conversion, the AC-DC or isolated PoE converter generates 48V. An intermediate Bus DC/DC converter generates the intermediate bus voltage of 12 V or 5 V, and then a point-of-load converter is used to step down once more to the necessary voltage level required from the analog front end (AFE), field-programmable gate array (FPGA) or application-specific integrated circuit (ASIC) that needs power.