标签: 标准pwm控制器

WhiteLEDDriverCircuitsforOff-LineApplicationsusingStandardPWMControllersWhiteLEDDriverCircuitsforOff-LineApplicationsusingStandardPWMControllersApplicationNoteFebruary12,2009AN1387.0IntroductionTheLEDBallastAshigh-efficiencyultra-brightwhiteLEDscomedowninFortunately,therearemanypowersupplytopologiessuitablecost,theyareapproachingcostparitywithconventionalforthisapplication.Virtuallyanytopologyhavingaseriesmercuryvapour,HIDquartz……