Thecontinuousmarchinelectronicstowardlowersupplyvoltages
andhigherloadcurrentsputstremendouspressureonpoint-ofloadDC/DCconverterstomaintainafastpaceofperformance
improvements.Forinstance,alowersupplyvoltagemeansa
regulatormustsupportahigherstep-downratiofroma12V
or24Vpowerrailwhilemaintaininghighefficiency.Regulation
accuracyalsobecomesmoreimportantassupplyvoltages
drop—andaccuracymustbemaintainedinthe
presenceofparasiticIRdropsanddynamicload
transients.EMIgeneratedbyswitchingconverters
isalsoofconcern,especiallyinRFapplications.October2011Volume21Number3INTHISISSUE2-channeland4-channelFast,AccurateStep-DownDC/DCControllerConverts24VDirectlytopin-selectableI2Cmultiplexer11highefficiencypowersupplyforIntelIMVP-1.8Vat2MHz6/6+/6.5CPUs20BudAbesingha3AlinearregulatoreasilyThecontinuousmarchinelectronicstowardlowersupplyvoltagesparalleledtospreadpowerandhigherloadcurrentsputstremendouspressureonpoint-of-andheat24
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