On Semi 255W ATX电源参考设计方案
High-Efficiency 255 W ATX Power Supply Reference Design
ON Semiconductor was the first semiconductor company to provide an 80 PLUS-certified open reference design for an ATX power supply in 2005. A second generation 80 PLUS-certified open reference design with improved efficiency was then introduced in 2007. ON Semiconductor is now introducing its third generation 80 PLUS-certified open reference design with a drastic efficiency improvement. This is a 255 W multi-output power supply for the ATX form factor. Achieving a maximum efficiency of 90% at 50% load, and at 230 and 240 Vac, this third generation reference design achieves >88% efficiency at 50% load, and 100 and 115 Vac. All efficiency measurements were obtained at the end of a 41 cm (16 in.) cable, ensuring the design can be used ‘as is’ in all standard desktop PC configurations...
