18LED灯具低压驱动技术

200971LEDLED。LED、、、LED、LED、、、、、、2008500。LED。1WLED2008200620092006。LEDVCD、DVD、、MP3LED、、。LED。0.03-1100%80%。LEDLED。、、51010。LEDLED。。LEDVFVF=2.75-3.8VIF15-1400mALEDICVFXNVFX1,IF15-1400mA。LEDLEDIF=15-20mAIF200mALEDLED、、LED、、、、、、。LED、LEDLEDLEDLEDLED。LEDLEDICICLED。2LEDLEDVF、IF//////。LEDP-N。VFLEDIFLED。LEDVF3.4V±0.2V。LEDIF。1LEDLED3LEDLEDNLED。NN1。VFIF。LEDLEDLightingwithLow-voltage-drivenTechnology200233YanChong-guangChinaResourcessiliconGranvilleTechnology(Shanghai)Co.,Ltd.,Shanghai200233)LEDICLEDIC。LEDICLEDTM925B1003-0107(2009)07-0061-04Abstract:ItanalyzedthetechnicalrequirementsofLEDlampwithLow-voltagedriverICfromtheperspectiveofthetechnologyandthemarketeconomytheworkingprincipleandapplicationofICtechnologybrieflyintroducedtheworkingprincipleandapplicationtechnologyofLEDdriverICforfamilylighting.Keywords:LEDdriverIC;LEDlampsCLCnumber:TM925Documentcode:BArtecleID:1003-0107(2009)07-0061-0461LEDEDTopicL4LEDLEDAC/ACAC/DCDC/DCLED。LEDLED。IFLEDIF△VFNLED。LED2。LED36V220V100V。5LEDMR11、MR16、、、、、LED1W、3WLEDAC/DC12-36VDC/DCBuck+LEDVFIF。LEDLED1-91-3。△VFVin。LED△VF=3.4VX3=10.2V。Vin12V。MR11、MR161WX33WX11WX32-31WX7-91WX934--6、1WX3-63。LEDVinDC12-36V。1WLED。6LED1DC8-40V45VAC12V24VICLED。21.2-1.5ALED1WLED350mA3WLED700mALEDICIC70-90%。IC。3LEDPCBRsLEDLED。4DiePinPCB3。4X4mm300-1000mA。5EMI、、LEDCE、UL。60.5W120Hz。7PT4115PT4115DC/DC-Buck→ConstantCurrent1LED2LED3IC6220097。PT41154。PT4115EMI。(FrequencyJitter)EMI。EMI。EMI。。EMI。PT41158-30V45V1.2A。97％。±5％。、、、LED。SOT89-5。。DIM。PWM。DIM1Rup5V。DIM、NTCDIMRupNTCPN。LED。NTCPN。5。8PT4115●AC/DC●●VinVin-△VF=1.2-1.5V●RsLEDIFRs=0.1/ILED●LED400mAL68-100uH(0.6A)400mA800mAL47-68uH(1.2A)L=X1.5●L4000●Cin●、●PCBPT4115ExposedPADGND。29PT4115LED、、、、、。LED6。3-91WLED△VF=3.4VXNIF=350mA。Vin=12VDC3LED△VF=10.2V。3△IF=3X350mA=1050mA。N。10DEMOLEDDEMOLED。、、PCB、4PT411556LED63、、。。DEMO7LEDDEMO。[1].LEDIC[J].EDN,2008,3.[2].LED[R].LED/,2008,09.7MR16DEMOLEDEDTopicL(EMC)●(Radiation)EN55011,13,22、CISPR11,13,22、FCCPart15&18,VCCI、GB14023、GB4824、GB9254、GB13837、GB18655、GB/T16607、GJB151A-97●(Conduction)EN55011,13,14-1,15,22、CISPR11,13,14-1,15,22、FCCPart15&18,VCCI、GB4824、GB9254、GB13837、GB17743、GB4343、GB18655●(Click)EN55014-1、CISPR14●(PowerClamp)EN55013,14-1、CISPR13,14-1、GB13837、GB4343●(MagneticEmission)EN55011,15、CISPR11,15、GB17743、GB4824●(ESD)IEC61000-4-2、EN61000-4-2、GB/T17626.2●(R/S)IEC61000-4-3、EN61000-4-3、GB/T17626.3、GJB151A-97●(EFT/B)IEC61000-4-4、EN61000-4-4、GB/T17626.4●(SURGE)IEC61000-4-5、EN61000-4-5、GB/T17626.5●(C/S)IEC61000-4-6、EN61000-4-6、GB/T17626.6、GJB151A-97●(M/S)IEC61000-4-8、EN61000-4-8、GB/T17626.8●(DIPS)IEC61000-4-11、EN61000-4-11、GB/T17626.11●(Harmonic)IEC61000-3-2、EN61000-3-2、GB17625.1●(Flicker)IEC61000-3-3、EN61000-3-3、GB17625.2●(Flicker)IEC61000-4-12、EN61000-4-12、GB/T17626.1264