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1、_新型多串半桥谐振高效LED驱动解决方案及其应用,Add Speakers Name Here,LED General Illumination,Low Cost,TRIAC Dimming,PFC,High Efficiency,Color Quality,Safety,Long Life,PFC,High Efficiency,Dimming,Early Payback,Color Quality,Safety,Maintenance,Eco-friendly,PFC,High Efficiency,Early Payback,High Brightness,Safety,Maintena
2、nce,Eco-friendly,TPS40211(MR16)TPS92210(Ioslated)TPS92001(non-isolated)TPS92070(Two stages),UCC28810(Tube lighting)UCC28811(Tube lighting)UCC25710,UCC25710UCC28810/1TPS92020TPS92510,Street Light,Area Light,Flood Light,E14,E27/A19,PAR38,TPS92010EVM-592(110V)TPS92010EVM-631(230V)TPS92210EVM-613,UCC288
3、10EVM-002UCC28810EVM-003,UCC28810EVM-003UCC25710,MR16,Architectural,Display Case,Retail Display,Careabouts,Devices,Tools,new,new,new,new,Typical High Watt(100W)LED Lighting Driver Topology,15pcs LEDs in Series,1.AC/DC Power Stage,2.Constant Current Driver Stage,+,UCC28061(Inter TM PFC)UCC28810/1(TM
4、PFC),TPS40211TPS40200TPS54160,TPS40211TPS40200TPS54160,UCC25600(LLC),High Watt(100W)LED Lighting Efficiency Budget,Conventional Topology Issues:High cost:PFC+LLC+CC BUCK(multi-chips!)Low efficiency(88%)Low reliability(many components counts)EMI issues,97%,96%,95%,88%(Traditional solution),5,Series I
5、nput,Multiple Parallel Equivalent LED Drive(SIMPLEDrive),TI UCC28810EVM-003-SIMPLEDrive,1st stage:TM Boost for PFC,2nd stage:TM Buck for LED current,3rd stage:Resonant Current Half Bridge,97%,98%,98%,93%(Three stages multi-string transformer solution),Innovative two stages multi-string LLC topology
6、for LED lighting,UCC28810,UCC28811,UCC25600,UCC28810,UCC25710,new,Benefits for the proposed topology:High efficiency 92%Low cost(no need CC DC/DC driver)High reliability Easy EMI PWM or analog dimming compatible,Why Transformer Can Balance Current,Transformer current is in reverse proportion to turn
7、 ratioIp/Np=Is/Ns;Is=Ns*Ip/NpWhen transformer primary is connected together,their primary current must be the sameWhen T1 is the same as T2 because of transformer operation principle their secondary current is the sameIs1=Np*Ip/Ns=Is2,Multi-Transformer Architecture(TI Patented),One transformer contr
8、ol two LED strings!,Applications,Features,General LED Lighting LED TV Backlighting,Industry first single chip LLC controller for driving multiple LED strings directly from PFC outputAdjustable Fmin(3%accuracy),and Fmax 6%(accuracy)Closed Loop LED String Current ControlPWM Dimming InputLLC and Series
9、 LED Switch Control for DimmingProgrammable Dimming LLC ON/OFF Ramp for Elimination of Audible NoiseClosed Loop Current Control at Low Dimming Duty-CyclesProgrammable Soft StartAccurate VREF for Tight Output Regulation Over-voltage and Under-voltage and Input Over-current Protection with Auto-restar
10、t ResponseSecond Over-current threshold with Latch-off Response+400-mA/-800mA Gate Drive Current Low Start-Up and Operating Currents 20 pin SO Lead(Pb)-Free Package,UCC25710:LED driver Controller IC,Current Regulation and VCO Slew Control,UCC25710Block Diagram,Supply Control,LLC Control,LED Switch a
11、nd Dimming Control,Fault Control,UCC25710:DIMMING LLC ON/OFF TRANSITION&CURRENT CONTROL,The DIM input controls the ILED-ON an ILED-ON signals.DSR capacitor C2 and internal 44uA currents control the slew rate of VVCO during dimming off and on transitions.Turn-off:DSR is discharged to GND by 44uA Turn
12、-on:DSR is charged to ICOMP by 44uA.Charge level is clamped to 1Vbe above ICOMPControl Clamp output,VVCO,tracks the lower of ICOMP and DSRICOMP is only driven by GM amp during LED-ON times.During LED-OFF times the ICOMP voltage is held by C1,UCC25710:START-UP&DIM WAVEFORMS,10ms RESET initiates Soft-
13、Start(SS)LLC Soft-Start,VCO control is clamped to SS until SS ICOMPDimming is disabled during SSDSR cap is used to limit LLC control slew rate during dimmingICOMP voltage is maintained during dimming,UCC25710:DIMMING WAVEFORMS,DIM input controls LEDSWDIM input triggers soft turn-on and turn-off of L
14、LC converterLLC on-time is extended On-time extension is proportional to 1-D,D is dimming duty-cycleExtended on-time allows ICOMP to maintain current regulation at low D,UCC25710:LOW DUTY-CYLE ILLUSTRATION,LLC reaches power level equal to pedestal LED current in region B.Power is under delivered in
15、region A,but is compensated for in region CRegion B is zero,but sum of A+C still deliveries correct energy.Energy delivered in region A+C is too low,loop is open and realized peak LED current will dropOn-time is extended.A+C energy/pulse is correct to maintain same peak LED current,UCC25710:FAULT MA
16、NAGEMENT,FaultsOV highest LED string voltageUV lowest LED string voltageCL(1V)input current signal over-currentCL(2V)input current signal latch-offTSD Chip thermal shutdownResponseOV,CL(1V)&TSD:The LLC converter and LEDSW are turned off.When the fault clears a RESET and SS are initiated.UV:The LLC c
17、onverter and LEDSW are turned off.A RESET and SS are immediately initiated,repeatedly,until fault clears.CL(2V):The LLC and LEDSW are latched off until UVLO recycles.During RESET the LLC converter and LEDSW are OFFDuring SS the LLC converter and LEDSW are ON,i.e.no DIMMING,PMP4302A:Multi-string LLC
18、AC/DC Driver for general LED lighting,FeaturesLowest cost than AC/DC+DC/DCHighest efficiency to 92%PWM dimming compatibleIntegrate LED open/short protection and over current protection,ApplicationsGeneral LED lighting and LED backlight TV,UCC28810,UCC25710,PMP4302A demo board,Input EMI,PFC Stage,Mul
19、ti-string LLC Stage,Aux Power,LED light bar4x15LEDs,PMP4302:Schematics for UCC25710 after PFC stage,PWM dimming&Total current sensing feedback,Multi-string transformer LLC topology,PMP4302A:LED current output tolerance,Current tolerance can achieve+-3%with dimming range from 1%to 100%,230V ac input,
20、LED output current Vs Input voltage w/100%dimming,PMP4302A:Efficiency(TM PFC+Multi-transformer LLC+Aux power),Dimming version,PMP4302:waveforms,1%dimming,5%dimming,50%dimming,90%dimming,CH1:LEDSW MOSFET Vgs 5V/Div CH2:LED Output Current 1A/DivCH3:DSR 2V/Div CH4:Primary Current 1A/Div,PMP4302:wavefor
21、ms,90Vac input,230Vac input,CH1:Primary MOSFET Vds 100V/DivCH2:LED Output Current 200mA/DivCH4:Primary Current 1A/Div,Lm/Lk=6Fs=100KHzQ=0.7,Lm1+Lm2=640uHLr=100uHCr=30nF,CCM to get better current tolerance,PMP4302:Thermal and Bode Plot,PMP4317:Single-string LLC AC/DC Driver for general LED lighting,F
22、eaturesLowest cost Highest efficiency to 95%PWM and analog dimming compatibleIntegrate LED open/short protection and over current protection,ApplicationsGeneral LED lighting and LED backlight TV,UCC28810,UCC25710,200V/700mA,PMP4317:Single String Architecture,PMP6251:LED Backlighting for Edge-Lite/Gr
23、oup Dimming Digital TV Application,Reference design Features Support to universal 90264Vac range LED 4 outputs 120mA,63V,5Vsb1A,5V3A,13V3A Eff 83.7%110Vac,85.2%240Vac Secondary side 120Hz blanking control for dimming 8mm height and 6mmheight for LED magnetic component Board dimension 300mm(L)*200mm(
24、W)*8mm(H)LED output common+and LED OVP and UVP Integrated the protection ckt to reduce the solution part count.Dedicated controller for edge-lit/group dimming base on the LLC topology UCC25710 Providing design package Schematic,Gerbo file,PCB file,Magnetic components,PMP6251:PFC+Multi-string LLC Eff
25、iciency,Efficiency exclude standby Power Converter at full load condition 90%,Summary,UCC25710 with multi-transformer LLC topology can achieve:High efficiencyLow total BOM cost with high reliabilityPWM or analog dimming compatibleOutput LED strings open/short protectionInput over current protectionS
26、upport 1%100%dimming rangeEasy EMI,TI LED Driver Reference Design Solution,Commercial:PMP4301/A/B,Residential:PMP4304,Outdoor:PMP4302A,Visit for more LED driver reference designs,MR16:PMP6300,TI LED Driver Reference Design Solution(cont),Outdoor:PMP4317,PMP4301:T10/T8 AC/DC LED Driver for Fluorescen
27、t Lamp,FeaturesSpecific transformer for T8 lighting form factor PWM dimming compatibleLow BOM costEfficiency 87%at 230Vac inputIsolated single stage w/PF0.97 at 230Vac inputOutput over voltage protection:45VdcOutput ripple current:30%of output currentSize:245mmX18mmx11mm(ultra-slim),L:245mm,W:18mm,H
28、:11mm,ApplicationsT8 and T10 tube LED lightingWall-wash LED lightingCommercial LED lighting with PWM dimming,PMP4301:Schematics of Single Stage PFC with UCC28810,PWM Dimming interfaceNo PWM,full lightHave PWM input,dimming with duty%,Constant current control&Output OVP protection,Output short&Open l
29、oop protections,Vcc High voltage start up,EMI filter and bridge diode,PMP4301:PFC&THD,Input with 110VAC,Input with 230VAC,Input Voltage200V/div,Input Current200mA/div,PF0.92 w/wide range input,Input Voltage200V/div,Input Current200mA/div,PMP4301:Performance,Peak efficiency is 87.7%at 110Vac&220Vac,O
30、utput ripple current with110VAC input,Output ripple current with 220VAC input,Output current 50mA/div,Output voltage20V/div,Input Voltage 200V/div,Output current 50mA/div,Output voltage20V/div,Input Voltage 200V/div,5mA(+-1%)output current tolerance,PMP4304:7W TRIAC dimming LED lighting Driver,Featu
31、res50 components counts with low BOM costTRIAC dimmable solutions without flickingPrimary side controls without opto-couplerConstant On-time control with high power factor,ApplicationsPAR20/30/38 LED LightingSmall form factor indoor Lighting,36,DALI Demo and Evaluation Platform,DALI PHY for MSP430,T
32、PS62260 EVM with MSP2131,DALI controller,ApplicationsLight Bulb ReplacementAutomotive LightingStreet LightingBack LightingArea LightingOff-GridSignage,Full SystemSolutionsMulti-StringSingle-StringMulti-StageSingle-StageTRIAC dimmingDigital PowerCommunication,ExpertiseAnalog ControlDigital ControlWir
33、elessDC/DCAC/DCLinearLED Lab,ResourcesEVMsCook BookRef.DesignsSample SoftwareApplication ReportsLocal Design ServicesSystem Block Diagrams,TI LED Lighting Solutions,Reference Designs,Products,White Papers,Articles,Tools,Videos,etc.,39,LED Reference Design Cookbook,http:/,2Q11 Fresh Off the PressChin
34、ese Version ready now!,Thank you,MajpjMVcyzj21HLfrvy96dv02lPPfYgxUS7IYmZkyEmZ0kGeYZS3bpLCkYH1lt4EK7CxmUX3ijoYSOer7ZuaVWYgz4EpZrUirVpMzzvNtf1XZw5oswSXOtFaejnOcmfE1lZgnN1RSXg8wLCG8CVQ3XPJMvodPFWcpiYJgZazNSEPNIaklYSu7qSd1UpaxmZDlpN9zW7kljfsLCLi26Yv109ffbnDH8LbUN1G6ACURQ39eG12KHL9tXsZ1jzgoCK8g1kuNOh5eFv
35、cmVT5ZYVQt9zk3rp3qLnf02FovEXxVRxjCcFRNppiJljNiOuk6fONnyX7fyGg7sXZ49BmCN5oy9VesHpKzdjTKwjrkCEQCFDehVmGax3lrOEbw63VscA3YSijtUKoCyiLzAlVRp7l4QgPNHxvJFFDyjUVN3oHlMah0XBd4uTbkfPIhHtw0evPmYOrdhEDoPwvYhzlGplU1AU9mpyiCXH8gpPCBRYjq77VcnbXumNE1yGfyTsbSj89J63kRTKDkKUg3mdS5sJ4X5cQ8dK7oW9IkScssECQdz2O9UTlpRjAFPC
36、hjhLdzopQzwxQf8ozdzOhogwAooXpUF83BX4C3jRgjDJiiXEUDMaNz4vQ4n164vspddHvOIVuBBdMA4xp1YhiHk0vOJ8TL1BxogzVlMpmod6ianYGmksQq6NWCEd56hZF4wfaNyZcrGfNxnPiG6ZAxSkfmhJAKtNmCqbRmppeXp8inz4eq3HkWCMSORyMMX522xpHG6basNr6KQfbZsFbHjzyNlJrruLolKFcC84dqfijBO5Dy2NaBcNEBPgQrT12PgpcKx2or2YChN5DPjs80zzdtdAdTKuW4uVv9bbZu3K2SZ2aEhTlIC1UqrIWibkzwHh6p8gLv26zr01mJybfOzFc4T7kQH1IpPwOzMDnAKPLsLrznXGjFNIA9bSWWms6ibKZwQIKrMzalwbFrQJvOP1rPH8rx2KkyYqrtQk5VRwM1HSX,
