This reference design uses the UCC2809 to control an isolated flyback that converts a standard 48V telecom input to an isolated 80V. An additional winding on the secondary of the flyback transformer generates an unregulated 12V rail. The TPS40193 controls a synchronous buck that generates a 3.3V/3A output from this 12V rail. The total end-to-end efficiency of this design is over 90%.
Download the bill of materials for PMP4113 | Download |
Title | Updated | Type | Size (KB) | |
---|---|---|---|---|
PMP4113 Gerber | 16 May 2012 | ZIP | 129 | |
PMP4113 PCB | 16 May 2012 | 84 | ||
PMP4113 BOM | 16 May 2012 | 29 | ||
PMP4113 Schematic | 16 May 2012 | 85 |