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TI series
UCC28810 / UCC28811 - single-stage PFC isolation scheme
分类：TI series 来源：网络 发布：2013-03-27 23:29:59
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UCC28810 UCC28811 Single stage PFC isolation program 1FEATURES ●TransitionModeControllerforLowImplementation CostofACInput LEDLightingApplications ● Implements SingleStagePowerFactorCorrectedLEDDriver ● EnhancedTransientResponseWithSlew-RateComparator ● Interfaces withTraditionalWallDimmers ● AccurateInternal VREFforTightOutputRegulation ● TwoUVLOOptions ● OvervoltageProtection(OVP), Open-FeedbackProtectionandEnableCircuits ● ±750-mAPeakGateDriveCurrent ● LowStart-UpandOperatingCurrents ● Lead(Pb)-Free Packages APPLICATIONS ● ACInput GeneralLightingApplicationsUsingHBLEDs ● Industrial, CommercialandResidentialLightingFixtures ●OutdoorLighting:Street,Roadway,Parking, ConstructionandOrnamentalLEDLightingFixtures DESCRIPTION TheUCC28810andUCC28811aregenerallightingpowercontrollers for low to mediumpowerlumensapplications requiring power factor correction andEMC compliance. It is designed for controlling aflyback, buckorboostconverter operatingin criticalconduction mode.It features a transconductancevoltage amplifier for feedback error processing, asimple current reference generator for generatingacurrentcommandproportionalto the input voltage,acurrent-sense(PWM) comparator, PWMlogic andatotem-pole driverfor drivinganexternalFET.
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