AC/DC converters efficiently handle load changes with digital-control loop

摘要

Power-conversion efficiency is important in server farms in which more than 10,000 blade servers share the same facility: For every watt at the load, the farm consumes 2W of energyrndue to delivery losses, and an increase in power-conversion efficiency results in double the overall energy savings. To address these problems, Cold-watt based its new 1U ac/dc-converter, 750 and 1625W power subsystems on a digital-power-conversion platform. A Silicon Labs C8051F30x microcontroller powers the platform, and Cold watt officials claim that the power system is more efficient than traditional analog-loop power converters.