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RY201AT3 低功耗零交叉检测器 SOT23-3 深圳恒锐丰科技.pdf

发布:2025-04-02约1.85万字共6页下载文档
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RY201AT3

LowPowerLossZero-CrossingDetector

Features

•InputVoltageRange:3-5.5V•LowQuiescentCurrent10uA

•IntegrateRectifierDiode•EffectivelyPreventPowerLineNoise

•RequireLessPeripheralDevices•IntegrateZenerDiode

•EnvironmentTemperature:-40℃~85℃•SOT-23-3package

Applications

•PLC•DomesticAppliance

•PowerEquipmentAccess•RGBLightingSynchronousControl

GeneralDescription

RY201AT3isaspecialchipforzero-crossingdetectioncircuitbydetectinginputvoltage.Wheninputlinevoltage

islessthanthreshold,RY201AT3drivestheopticalcouplingchip,providingzero-crossingdetectionsignalto

applicationcontrolsystem,whiletheinputvoltageisgreaterthanthethreshold,theoutputpresentshighresistance.

RY201AT3hasextremelylowpowerconsumption,aquiescentcurrentoflessthan10µA,sothatmostofthe

electricalenergyisusedtodrivetheoptocouplertoobtainawidezero-crossingdetectionpulsetomakeiteasierto

bedetectedbythesystem.Aschmittflip-flopisusedinVINpin,thehighlevelis2.5V,thelowlevelis0.6V,Internal

hysteresisalsomakesRY201AT3easiertofiltertheglitchonthepowerlineandeffectivelypreventerrorzero-

crossingdetectioncausedbynoiseonpowerlinesignal.ArectifierdiodeisintegratedinsideRY201AT3,rectifying

theinputvoltagetoprovidepowersupplyforICandoptocouplerwithonlyacapacitor,azenerdiodeisalso

integratedatinputterminaltolimitthemaximumvoltage,ov

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