18Vdc-72Vdc Input, 12V/10A Active Clamp Forward, 1/4 Brick - PMP8861 - TI Tool Folder
This reference design generates a 12V/10A output from a wide range 18V to 72V telecom input. The UCC2897A controls an active clamp forward converter power stage. The low gate charge and low RDSon of the CSD18533Q5A, implemented as a synchronous rectifier, provides for a highly efficient design. This design is laid out in a standard quarter brick footprint and achieves efficiencies near 95%.
28Vdc Input Super Cap Charger with Boost Converter for Bus Holdup - PMP7327.1 - TI Tool Folder
This reference design uses the BQ24640 super cap charging controller to charge a large bank of super caps to voltage just below the input bus voltage. During an input bus dropout, the energy from the super caps is used to power a boost converter that can supply 10A of output current at 26.2V. This output can be used to hold up the bus voltage for up to 10 seconds (260W for 10 sec).