TI TPS92010 230-VAC TRIAC調光6W LED照明方案
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TI公司的TPS92010具有高效率的PWM控制器,采用準諧振模式以降低EMI和開關損耗,起動電流小于25uA,可編程線路和負載過壓保護,并提供LED開路保護和超溫保護,主要用在A19E12/E26/27,GU10,MR16,PAR30/38集成燈,結構和顯示照明以及走廊和頂燈照明.本文介紹了TPS9201主要特性,框圖,典型應用電路圖以及230-VACTRIAC調光6-WLED驅動器主要特性,電路圖,材料清單和布局圖.
本文引用地址：http://www.bjwjmy.cn/article/200436.htmTheTPS92010isaPWMcontrollerwithadvancedenergyfeaturestoprovidehighefficiencydrivingforLEDlightingapplications.
TheTPS92010incorporatesfrequencyfoldbackandlowpowermodeoperationtoreducetheoperationfrequencyatlightloadandnoloadoperations.
TheTPS92010isofferedinthe8-pinSOIC(D)package.Operatingjunctiontemperaturerangeis–40℃to105℃.
TPS9201主要特性:
LEDLightingCurrentDriverControllerwithEnergySavingFeatures
Quasi-ResonantModeOperationforReducedEMIandLowSwitchingLosses(LowVoltageSwitching)
LowStandbyCurrentforDeepDimmingEfficiencyPowerConsumption
LowStartupCurrent:25µAMaximum
ProgrammableLineandLoadOvervoltageProtection
ProvidesOpenLEDProtection
InternalOvertemperatureProtection
CurrentLimitProtection
Cycle-by-CyclePowerLimit
Primary-SideOvercurrentHiccupRestartMode
1-ASinkTrueDrive,–0.75-ASourceGateDriveOutput
ProgrammableSoft-Start
TPS9201應用:
ResidentialLEDLightingDriversforA19E12/E26/27,GU10,MR16,PAR30/38IntegralLamps
DriversforWallSconces,PathwayLightingandOverheadLighting
DriversforWallWashing,ArchitecturalandDisplayLighting
圖1.TPS9201方框圖
圖2.TPS9201典型應用電路圖
A230-VACTRIAC調光6-WLED驅動器
TheTPS92010EVM-631isafullyassembledandtestedcircuitfordemonstratingtheTPS92010Controllerina230VAClightbulbreplacementdesignthatisTRIACdimmable.TheTPS92010EVM-631includesanLEDlightenginetoloadtheoutputandmakeiteasytoseethedimmingfunctionwhenusedwithanexternalTRIACbaseddimmer.
TRIAC調光6-WLED驅動器主要特性:
LEDLightingCurrentDriverControllerwithEnergySavingFeatures
Quasi-ResonantModeOperationforReducedEMIandLowSwitchingLosses(LowVoltageSwitching)
LowStandbyCurrentforDeepDimmingEfficiencyPowerConsumption
LowStartupCurrent:25µAMaximum
ProgrammableLineandLoadOvervoltageProtection
InternalOvertemperatureProtection
CurrentLimitProtection
1-ASinkTrueDrive,–0.75-ASourceGateDriveOutput
ProgrammableSoft-Start
圖3.PSU電路圖
圖4.LED板電路圖
TRIAC調光6-WLED驅動器材料清單:
圖5.PSUPCB布局圖(頂層)
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