高效率ACDC开关电源适配器测试报告.ppt

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1、LP8773S+LP20R100T-12V4ATestReportByMinLeiDate:9-10-181.Specification22.Schematic3TopsideBottomside3.CircuitBoardPhotographLP8773SLP20R100T44.1BillofMaterial54.2BillofMaterial(Cont.)6/215.TransformerDrawing7*Note:OutputvoltagemeasuredattheendofPCB.6.Ripple,RegulationandEfficiency8*Testconditi

2、ons:Vinincreasedfrom0V.7.ACStartupVoltageVinac_Startup=68.4VNoLoadVinac_Startup=80.7VFullLoad98.ACBrownoutVoltageVIN_BROWNOUT=41.4VNoLoadVIN_BROWNOUT=73.8VFullLoad10/219.VccRangeVin=90Vac/60Hz,NoLoadVin=90Vac/60Hz,FullLoadVin=264Vac/50Hz,NoLoadVin=264Vac/50Hz,FullLoadVCCMin=14.6VVCCMax=18.8V

3、VCCMin=14.4VVCCMax=18.2V*Alltestconditions:10V9mS10.Turn-onDelayandHoldupTimeT_Turn-onDelay=2.68S90Vac/60Hz,FullLoadT_Holdup=11.5mS90Vac/60Hz,FullLoad12*Testconditions:264Vac/FullLoad;Vpk-pk<100V11.VdNormalVpk-pk=67.2VShortVp

4、k-pk=57.6V13*Testconditions:264Vac/FullLoad;Vds<650V12.VdsNormalVds-max=576VShortVds-max=508V1413.RippleandNoiseVin=90Vac/60Hz,NoLoadVin=90Vac/60Hz,FullLoadVin=264Vac/50Hz,NoLoadVin=264Vac/50Hz,FullLoadVripple26mVVripple130mVVripple34mVVripple94mV*Alltestconditions:Vripple<200mVandmeasuredat

5、theendofPCB.1514.OutputOvershootandRisetimeVin=90Vac/60Hz,NoLoadVin=90Vac/60Hz,FullLoadVin=264Vac/50Hz,NoLoadVin=264Vac/50Hz,FullLoadVOUT=3.39%T_Risetime=5.82mS*Alltestconditions:VoutOverShoot<10%andRisetime<30mS.VOUT=5.17%T_Risetime=12.74mSVOUT=3.39%T_Risetime=6.08mSVOUT=3.448%T_Risetime=11

6、.64mS16VOUT—MAX=12.5VVOUT—MIN=11.7V15.DynamicLoad*Alltestconditions:11.4V

7、:Componenttemperaturebelow120℃atfullload.19*Testconditions:FullResistiveLoad.18.ConductedEmissionVin=230Vac/50Hz,NChannelVin=120Vac/60Hz,LChannelVin=120Vac/60Hz,NChannelVin=230Vac/50Hz,LChannel20*Testconditions:FullResistiveLoad.19.RadiatedEmission