NXP-TEA1836+TEA1755-MW

TEA1836TrainingfordistributorsRichardWangApplicationDesignCenter(ADCTaipei)PLPowerSolutions,BLPLS,BUIndustrial&InfrastructureOct,2013COMPANYCONFIDENTIALTEA1836Agenda18October2013Keyfeature--Outlineandpin--MPAseries--Referenceschematic--Powersequency--ModeofoperatingBlockdiagramDetialspinfunctionCOMPANYCONFIDENTIALOctober18,20133TEA1836keyfeatureFeaturesofTEA1836HVstartup–startuptimeis450mS@90VacX-capdischargeinside–Xcapwith0.33uFdischargetimeis100mS*80mS@264VacwithnoloadBurstmodeinlightloadLowstandbypower30mW@230Vac(withoutVoutdropping)*ifyouremovetestboxbetweenACsourceandpowermeter,youcangetaround23mW@230VacPowerdownmode25mW@230Vac(withoutVoutdropping)*ifyouremovetestboxbetweenACsourceandpowermeter,youcangetaround17mW@230VacDCM/QRmodeworkingtogetherwithSRforhigherefficiencyLowercapacitanceatVcc–10uFAccuracyOVPdetectionbyAuxpinAccuracyHigh/lowmainOPPcompensationbyAUXpinAdjustablesoftstarttimeCOMPANYCONFIDENTIALTEA1836keyfeatureDemoboard18October2013115VAC/60HzLoad(%)VOUT(V)IOUT(A)POUT(W)PIN(W)Efficiency(%)10019.2123.3464.1770.9290.487519.2212.50548.1552.7591.285019.2491.6732.1535.0791.662519.2850.83516.1017.7190.93Average91.09230VAC/50HzLoad(%)VOUT(V)IOUT(A)POUT(W)PIN(W)Efficiency(%)10019.1123.3463.8369.2992.137519.1112.50547.8752.1991.735019.1811.6732.0335.0491.422519.2540.83516.0817.8390.17Average91.36Efficiencyis89.8%@10%loadingEfficiencyis88.7%@10%loadingCOMPANYCONFIDENTIAL5SO14incl.spacerSO8excl.spacerSO8incl.spacerTEA1836keyfeatureOutlineandpinning87651234VCCGNDDRIVERISENSEAUXCTRLPROTECTHVTEA18362(L)T87651234VCCGNDDRIVERISENSEAUXCTRLncHVTEA18363(L)T1234VCCGNDncDRIVER14131211PROTECTncncHVTEA18361(L)T567ncISENSEnc1098ncAUXCTRLOctober18,2013*TEA18363(L)TneedstohaveextracircuittoachieveOTPfunctionCOMPANYCONFIDENTIAL6TEA1836keyfeatureMPAproductseriesOctober18,2013COMPANYCONFIDENTIALABOctober18,20137TEA1836keyfeatureReferencecircuitA:Xcapdischarge/HVstartup/Brownin&outCDB:OPPcompensation(R5)/OVP(R5&R7)C:OTP/powerdownfunctionD:Softstart(C11)COMPANYCONFIDENTIALTEA1836keyfeaturePowersequenceandbrownoutOctober18,201381.Browninlevel2.VccVstartup(15Vtyp)3.VPROTECT0.5V4.VCTRL5V5.VIsense0.765VStartupperiodBrownouttime30mSBrownouttime30mSBrownoutbehaviorCOMPANYCONFIDENTIALTheTEA1836operatesinquasi-resonant,discontinuousorburstmode.Valleyanddemagdetectionviaauxiliarywindingquasi-resonantmodediscontinuousmodewithvalleyswitching130KHz25KHzFreq.PowerfrequencyreductionABCDABCDTEA1836keyfeatureModeofoperatingOctober18,20139COMPANYCONFIDENTIALTEA1836blockdiagramBlockdiagram18October2013AUXCOMPANYCONFIDENTIAL11TEA1836HVpinfunctionHVpinfunctionTherearethreemainfunctioninHVpin1.Brownin/outdetection2.Xcapdischargefunction3.ProvidingenergytoVccandinternallogiccircuitbeforeAuxwindingsettlesdownVCCHVVccChargeAA/DconversionDIGITALCONTROLXcapDischargeBrownOutHVjfetRHVD1D2October18,2013COMPANYCONFIDENTIALBrownin:InputcurrentfromHVpinishigherthaninternalreferencecurrentBrownout:InputcurrentfromHVpinislowerthaninternalreferencecurrentcontinuesover30mS*theaccuracyofRHVisimportantanditneedstouse1%12TEA1836HVpinfunctionBrownin/outdetectionOctober18,2013IHVCOMPANYCONFIDENTIAL13TEA1836HVpinfunctionXcapdischargeThereisonewaytotriggerXcapdischargecircuit--dv/dtatHVpinisnot0HVDv/dtis0for28mSOctober18,2013COMPANYCONFIDENTIAL14TEA1836HVpinfunctionHowtodefinebrownin/outlevelBrowninandoutlevelisdetectedbycurrentlevel.Howtodefinebrownin/outlevel?Forexample,Browninlevelneedstobesetat85Vac.HowtochooseRHV?Sowecanplace180KohmforRHVThebrownoutlevelisaround*ThetoleranceofRHVisrelatedaccuratebrownin/out,itshouldbebettertouse1%.KuAVinIbrowndcinVbrownRHV3.181663285,VacVbrownoutuAK7.742587180October18,2013COMPANYCONFIDENTIAL15TEA1836VccpinfunctionVccpinfunctiona)Startuplevel(VccStart)b)Minvoltageinburstmode(VccLow)c)UVLOlevel(VccStop)d)Fastlatchresetlevel(VccReset)October18,2013COMPANYCONFIDENTIAL16TEA1836VccpinfunctionHVchargesVcca)VccwillbechargedbyHVuntilCTRL5Vduringstartupb)Vcccapcanbe4.7uF,butfornicepowersaving.10uFissuggestedOctober18,2013softstartHVchargeVCCONOFF2.2V5VHVVbrownoutVstartVstopVoutVprotectVctrlVisense0.75VCOMPANYCONFIDENTIAL17TEA1836CTRLpinfunctionCTRLpinfunction1.Feedbackloop2.Goesintoburstmodedetection3.OperatingfreqisrelatedtoCTRLvoltageOctober18,2013COMPANYCONFIDENTIALOperatingfrequenciesoutsideaudiblearea181250usFsw=23Khz1250usFsw=23Khz1250usFsw=23Khz1250usFsw=23KhzPowertimeBurstmodeFsw=25KHzFsw=25KHzFsw=25KHzFsw=25KHzOctober18,2013TEA1836CTRLpinfunction(800Hz)COMPANYCONFIDENTIAL19Burstmodein/outCh1:VccCh2:driverCh4:CTRLCh1:VccCh2:driverCh4:CTRLBurstmodein:VCTRLislowerthan0.5VBurstmodeout:thereisaround40pulseduring800Hz.Assoonaschipgoesintoburstmode,ThevoltageofCTRLdoesn’tdecidewhattimechipleavesburstmodeOctober18,2013TEA1836CTRLpinfunctionCOMPANYCONFIDENTIAL20BurstmodebehaviorCh1:VccCh2:driverCh4:CTRLTherearethreepulsesatleastinnoloadandthefreqishigherthan23KHztonextpulseOctober18,2013TEA1836CTRLpinfunctionCOMPANYCONFIDENTIAL21BurstmodebehaviorCh1:VccCh2:driver(50KHz)Ch4:CTRLCh1: