Infineon: “80 PLUS Platinum” Compliant Computing Silver Box Reference Design

Thu, 04/21/2011 - 4:21pm
ECN Europe

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 % efficiency, while significantly reducing the material costs.

Infineons solution IFX90ATX300W is based on the latest generation of three ICs and meets the industrys highest energy efficiency standard: 80 PLUS 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.

Infineons solution contains three components and sets the benchmark for energy efficiency requirements in PC and server power supplies. The focus is on reproducibility and reliability, especially in mass production: The third generation of CCM PFC (Continuous-Conduction Mode-Power-Factor-Control) ICs ICE3PCS01G provides 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.

Infineons second generation of half bridge driver ICs ICE2HS01G contributes to optimizing 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, Infineons ICE2QR2280Z a quasi-resonant CoolSETCurrent 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 certification




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