NEUBIBERG, Germany, April 26, 2011 /PRNewswire/ -- Infineon Technologies has developed the first marketable silver box reference design that enables PC and server power supply units to achieve up to 92.35 percent efficiency, while significantly reducing the material costs. Infineon's solution IFX90ATX300W is based on the latest generation of three ICs (Integrated Circuits) and meets the industry's highest energy efficiency standard: "80 PLUS(R) Platinum". Efficiency indicates what share of the power drawn is actually used. The difference between power input and power output is the power loss, which is converted into heat. High efficiency, therefore, translates into a reduction in power consumption and lowering of electricity bills.

Infineon's new solution uses the third generation of Continuous-Conduction Mode-Power-Factor-Control ICs - ICE3PCS01G - providing the highest efficiency available today for the power range of approximately 150 to 500 Watt typical of PC power supplies accompanied by the best cost-performance ratio of the PFC stage. Infineon's second generation of half bridge driver ICs - ICE2HS01G - improves the efficiency of LLC half bridge converters with synchronous rectification by optimizing the interplay between half bridge driver operation and synchronous rectification, hence preventing unnecessary switching losses. In addition, Infineon's ICE2QR2280Z - a quasi-resonant CoolSET(TM) Current Mode Controller with digital frequency reduction - minimizes the switching losses in the auxiliary supply typically taking the form of a fly back converter, thereby achieving high efficiency especially in low load and standby mode.


Samples of the whole chip set and demo boards are now available to qualified customers. Each IC is available in high-volume quantities.

Further information about the three components of the Infineon Silver Box Solution IFX90ATX300W is available at .

Background information on "80 PLUS(R) certification"

"80 PLUS(R)" promotes the manufacture and use of energy-efficient power supplies in desktop computers and servers. For "80 PLUS(R)" certification, power supply units have to achieve at least 80 percent energy efficiency at various load levels. Higher levels of efficiency is categorized into "80 PLUS(R) Bronze", "80 PLUS(R) Silver", "80 PLUS(R) Gold" and "80 PLUS(R) Platinum". To acquire Platinum certification, a power supply has to achieve efficiency of 89 percent at 100 percent load, 92 percent at 50 percent load and 90 percent at 20 percent load.