MOSFET Integrated Smart LED Lamp Driver IC with PFC Function

Size: px

Start display at page:

Download "MOSFET Integrated Smart LED Lamp Driver IC with PFC Function"

Justina Sanders
6 years ago
Views:

1 MOSFET Inegraed Smar LED Lamp Driver IC wih PFC Funcion June 2013 MOSFET Inegraed Smar LED Lamp Driver IC wih PFC Funcion Feaures Buil-in MOSFET(1 A / 550 V) Digially Implemened Acive-PFC Funcion No Addiional Circui for Achieving High PF Applicaion Inpu Range: 80 V AC ~ 308 V AC Buil-In HV Supplying Circui: Self Biasing AOCP Funcion wih Auo-Resar Mode Buil-In Over-Temperaure Proecion (OTP) Cycle-by-Cycle Curren Limi Curren Sense Pin Open Proecion Low Operaing Curren: 0.85 ma (Typical) Under-Volage Lockou wih 5 V Hyseresis Programmable Oscillaion Frequency Programmable LED Curren Analog Dimming Funcion Sof-Sar Funcion Precise Inernal Reference: ±3% Applicaions LED Lamp for Decoraive Lighing LED Lamp for Low-Power Lighing Fixure Descripion The LED lamp driver is a simple IC wih inegraed MOSFET and PFC funcion. The special adoped digial echnique auomaically deecs inpu volage condiion and sends an inernal reference signal o achieve high power facor. When AC inpu is applied o he IC, he PFC funcion is auomaically enabled. When DC inpu is applied o he IC, he PFC funcion is auomaically disabled. The does no need a bulk (elecrolyic) capacior for supply rail sabiliy, which significanly improves LED lamp life. Fuse BD C1 L1 L2 C2 R1 R2 CS VCC GND RT DRAIN HV ADIM Figure 1. Typical Applicaion C3 D1 C4 L3 LED Ordering Informaion Par Number Operaing Temperaure Range Package Packing Mehod MX -40 C o +125 C 7-Lead, Small-Ouline Inegraed Circui (SOIC), JEDEC MS-012,.150-inch, Narrow Body Tape & Reel 2012 Fairchild Semiconducor Corporaion Rev

2 VCC ZCD ime MOSFET Inegraed Smar LED Lamp Driver IC wih PFC Funcion Block Diagram VCC 2 JFET 7 HV UVLO IAD ZCD 8 DRAIN ADIM 5 DAC Sof-Sar TSD Digial Block RT 4 Oscillaor R Q Reference - + S LEB 1 CS GND 3 Leading-Edge Blanking - 2.5V + AOCP Figure 2. Block Diagram Pin Configuraion CS VCC GND RT DRAIN HV ADIM Figure 3. Pin Configuraion Pin Definiions Pin # Name Descripion 1 CS Curren Sense. Limis oupu curren, depending on he sensing resisor volage. The CS pin is also used o se he LED curren regulaion. 2 VCC VCC. Supply pin for sable IC operaion; ZCD signal deecion used for accurae PFC funcion. 3 GND GROUND. Ground for he IC 4 RT 5 ADIM RT. Programmable operaing frequency using an exernal resisor; he IC has pre-fixed frequency when his pin is open or floaing. Analog Dimming. Connec o he inernal curren source. Use o change he oupu curren using an exernal resisor. If ADIM is no used, connec a 0.1 µf bypass capacior beween he ADIM and GND. 7 HV High Volage. Connec o he high-volage line and supply curren o he IC. 8 DRAIN DRAIN. The drain pin of inernal MOSFET 2012 Fairchild Semiconducor Corporaion Rev

3 MOSFET Inegraed Smar LED Lamp Driver IC wih PFC Funcion Absolue Maximum Raings Sresses exceeding he absolue maximum raings may damage he device. The device may no funcion or be operable above he recommended operaing condiions and sressing he pars o hese levels is no recommended. In addiion, exended exposure o sresses above he recommended operaing condiions may affec device reliabiliy. The absolue maximum raings are sress raings only. Symbol Parameer Min. Max. Uni V CC IC Supply Volage 20 V HV High Volage Sensing 550 V DRAIN Inernal Drain Volage 550 V V ADIM Analog Dimming 5 V V RT RT Pin Volage 5 V V CS Allowable Curren Sensing Deecion Volage 5 V T A Operaing Ambien Temperaure Range C T J Operaing Juncion Temperaure C T STG Sorage Temperaure Range C θ JA Thermal Resisance Juncion-Air (1,2) 135 C/W P D Power Dissipaion 660 mw ESD Elecrosaic Discharge Capabiliy Human Body Model, JESD22-A Charged Device Model, JESD22-C Noes: 1. Thermal resisance es board. Size: 76.2 mm x mm x 1.6 mm (1S0P); JEDEC sandard: JESD51-2, JESD Assume no ambien airflow. V 2012 Fairchild Semiconducor Corporaion Rev

4 MOSFET Inegraed Smar LED Lamp Driver IC wih PFC Funcion Elecrical Characerisics Typical values are a T A = +25 C. Specificaions o -40 C ~ 125 C are guaraneed by design based on final characerizaion resuls. Symbol Parameer Condiion Min. Typ. Max. Uni V CC Bias Secion V CC V CC Regulaor Oupu Volage V HV=100 V DC V V CCST+ UVLO Posiive-Going Threshold V CC Increasing V V CCST- UVLO Negaive-Going Threshold V CC Decreasing V V CCHYS UVLO Hyseresis V I HV HV Pin Curren V HV=100 V DC, RT=Open ma I ST Sarup Curren μa Swiching Secion R T=5.95 kω khz f OSC Operaing Frequency R T=87 kω khz R T Open khz MIN Minimum On Time (3) 400 ns D MAX Maximum Duy Cycle 50 % LEB Leading Edge Blanking Time (3) 350 ns V RT Volage Reference of RT Pin 1.5 V Sof-Sar Secion ss Sof-Sar Time (3) DC Mode ms AC Mode 7 Periods Reference Secion V CS1 DC Mode Inernal Reference Volage of CS Pin V CS2 AC Mode (3) Proecion Secion OVP VCC Over-Volage Proecion on VCC Pin V V AOCP Abnormal OCP Level a CS Pin (3) 2.5 V AOCP Abnormal Deecion Time (3) 70 ns T TSDH Thermal Shudown Threshold (3) C T TSDHY Thermal Shudown Threshold (3) 50 C Hyseresis Dimming Secion V ADIM(ST+) Analog Dimming Posiive Going (3) Threshold V V ADIM(ST-) Analog Dimming Negaive Going (3) Threshold V I AD Inernal Curren Source for ADIM Pin μa Coninued on he following page V 2012 Fairchild Semiconducor Corporaion Rev

5 MOSFET Inegraed Smar LED Lamp Driver IC wih PFC Funcion Elecrical Characerisics (Coninued) Typical values are a T A = +25 C. Specificaions o -40 C ~ 125 C are guaraneed by design based on final characerizaion resuls. Symbol Parameer Condiion Min. Typ. Max. Uni MOSFET Secion BV DSS Breakdown Volage V CC=0 V, I D=250 μa 550 V I LKMOS Inernal MOSFET Leakage Curren V DS=550 V DC, V GS=0 V 250 μa (3) VGS=10 V, VDGS=0 V, R ON(ON) Drain-Source On Resisance T C=25 C Ω C ISS Inpu Capaciance (3) V GS=0 V,V DS=25 V, f=1 MHz 135 pf C OSS Oupu Capaciance (3) V GS=0 V,V DS=25 V, f=1 MHz 21 pf C RSS Reverse Transfer Capaciance (3) V GS=0 V,V DS=25 V, f=1 MHz 3.2 pf d(on) Turn-On Delay (3) V DD=350 V, I D=1 A 10 ns r Rise Time (3) V DD=350 V, I D=1 A 13.4 ns d(off) Turn-Off Delay (3) V DD=350 V, I D=1 A 14.9 ns f Fall Time (3) V DD=350 V, I D=1 A 36.8 ns Noe: 3. These parameers, alhough guaraneed, are no 100% esed in producion Fairchild Semiconducor Corporaion Rev

6 MOSFET Inegraed Smar LED Lamp Driver IC wih PFC Funcion Funcional Descripion The is a basic PWM conroller for buck converer opology in Coninuous Conducion Mode (CCM) wih an inelligen PFC funcion ha uses a digial conrol algorihm. An inernal self-biasing circui uses he high-volage swiching device. The IC does no need an auxiliary powering pah o he VCC pin ypical in flyback conrol ICs or PSR produc family. When he inpu volage applied o he HV pin is wihin operaing range (25 V o 500 V), he mainains a 15.5 V DC volage a he VCC pin for sable operaion. The UVLO block funcions such ha when he V CC volage rises higher han V CCST+, he inernal UVLO block releases and sars operaion. Oherwise, he V CC goes down o he V CCST- and IC operaion sops. Normally, he hyseresis funcion provides sable operaion even if he inpu volage is operaing under very noisy or unsable circumsances. power for he IC, has volage ripple as well as he recificaion volage afer bridge, changing volage level according o he V CC capacior value. Using his kind of volage flucuaion on he VCC pin, he IC can deec he ime reference and creae he inernal ZCD signal. For precise and reliable inernal reference for inpu volage signal, he uses a digial echnique (sigma/dela modulaion) and creaes a new inernal signal (DAC_OUT) ha has he same phase as he inpu volage, as shown in Figure 5. This signal eners he final comparaor and is compared wih curren informaion from he sensing resisor. Vbridge Inpu Volage Peak Bridge Diode Oupu Volage JFET Oupu Volage The has a smar inernal digial block for deermining inpu condiion: AC or DC. When an AC source wih 50 Hz or 60 Hz is applied o he IC, he IC auomaically changes is inernal reference signal, which is similar o inpu signal, for creaing high power facor. When a DC source connecs o he IC, he inernal reference immediaely changes o DC. VCC ZCD DAC_OUT VDD Charging Volage JFET Oupu Volage Sof-Sar Funcion The has an inernal sof-sar funcion o reduce inrush curren a sarup. When he IC sars operaion following an inernal sequence, he inernal reference slowly increases for a pre-deermined fixed ime. Afer his ransien period, he inernal reference goes o a seady-sae level. In his ime, he IC coninually ries o find phase informaion from he VCC pin. If he IC succeeds in geing phase informaion, i auomaically follows a similar shape reference made during he ransien imes, 7 periods. If no, he IC has a DC reference level. Vbridge Figure 5. Inernal PFC Funcion Self-Biasing Funcion The self-biasing funcion, using an HV device, can supply enough operaing curren o he IC and guaranee similar sarup ime across he whole inpu volage range (80 V~308 V AC). However, self-biasing has a weakness in high-volage condiion. Normally, he HV device acs as consan curren source, so he inernal HV device has power loss when high inpu volage connecs o he HV pin. This power loss is proporional o inpu volage. To reduce his power loss, one of he possible soluions is an addiional resisor beween he inpu volage source and he HV pin, as shown in Figure 6. ILED L1 LED D1 T/2 = 1/(Inpu Frequency * 2) 7*(T/2) Normal Operaion Fuse L3 Figure 4. Sof-Sar Funcion in AC Inpu Mode BD C1 C2 CS DRAIN VCC HV GND R3 Inernal PFC Funcion: How o Achieve High Power Facor The has a simple, smar, inernal PFC funcion ha does no require addiional pins for deecing inpu phase informaion or an elecrolyic capacior for supply volage sabilizaion. For achieving high PF, he does no use he recificaion capacior afer he bridge diode. This is imporan because he IC insead uses flucuaion in he signal on he VCC pin. Basically, he VCC pin, which is supplies RT ADIM R1 C3 R2 C4 L2 Figure 6. High-Volage Applicaion 2012 Fairchild Semiconducor Corporaion Rev

7 MOSFET Inegraed Smar LED Lamp Driver IC wih PFC Funcion Dimming Funcion The uses he ADIM pin for analog or 0 V o 10 V dimming by using a resisive divider. The peak volage of inernal reference, which is DAC_OUT signal in Figure 5, is changed by he V ADIM level, as shown in Figure 7, and has differen peak level according o he operaing mode. VDAC _ OUT In DCM Mode, inducance is: L m n V f ( 1 Dmin ) [ H] f i s rip If he peak curren is fixed a 350 mapk, he formula for he peak curren is: I LED ( ave. peak) i con i 2 rip [A] (2) (3) 0.5 V V AC Mode DC Mode In FL7701, he LED RMS curren deermines he inducance parameer. To drive for CCM Mode, define LED RMS curren firs, as: 0.5V 3.5V VADIM I LED ( rms) I LED ( ave. peak) 2 [A] Subsiuing Equaion (2) for Equaion (4), he inducance of inducor is obained. (4) Inducor Design Figure 7. V ADIM vs. V DAC_OUT(peak) The fixed inernal duy raio range is below 50%, or around 400 ns, from a iming poin of view. The range is dependen on he inpu volage and number of LEDs in is sring. Minimum duy is calculaed as: D n V f min (1) Vin(max) where: η = efficiency of sysem; V IN(max)= maximum inpu volage; V f = forward drop volage of LED; and n = LED number in series connecion. Curren Limi Average LED Curren VIN Vbridge ZCD DAC VLED Vdrain ILED IFRD Π 3Π 4Π 2Π Inpu Volage Peak Inpu Volage Peak Bridge Diode Oupu Volage Inpu Volage Peak VDD Charging Volage irip IMOSFET on off Curren peak a LED average curren maximum poin (ILED(ave.peak)) DCM Dmin 1-Dmin (a) DCM Mode i Curren peak a LED curren maximum poin (ILED(peak)) Average LED Curren (ILED(ave)) 0.5 i 0.5 i CCM DCM Iinpu T/2 = 1/(Inpu Frequency * 2) T = 1/Inpu Ferquency Figure 9. Typical Performance Characerisics Curren min a LED curren maximum poin (ILED(min)) Dmin on off 1-Dmin (b) CCM Mode Figure 8. DCM and CCM Operaion 2012 Fairchild Semiconducor Corporaion Rev

8 MOSFET Inegraed Smar LED Lamp Driver IC wih PFC Funcion Example Applicaion Circuis L1 D1 LED Fuse L3 CS DRAIN BD C1 C2 VCC HV GND R1 C3 R2 RT ADIM C4 L2 Figure 10. Applicaion Circui wihou Elecrolyic Capacior L1 LED D1 ZD C5 Fuse L3 CS DRAIN BD C1 C2 VCC HV GND R1 C3 R2 RT ADIM C4 L2 Figure 11. Applicaion Circui wih Elecrolyic Capacior L1 CS DRAIN Fuse VCC HV R1 BD C1 C2 GND RT ADIM C4 L3 R2 C3 D1 LED ZD C5 L2 Figure 12. Applicaion Circui of High-Side Operaion wih Elecrolyic Capacior 2012 Fairchild Semiconducor Corporaion Rev

9 VCCHV [V] VCC[V] Figure VCC vs. Temperaure Figure VCCHYS vs. Temperaure IST[ A] VCCST+[V] Figure VCCST+ vs. Temperaure Figure IST vs. Temperaure fosc [khz] VCCST-[V] Figure VCCST- vs. Temperaure 2012 Fairchild Semiconducor Corporaion Rev Figure 18. fosc vs. Temperaure (RT=Open) 9 MOSFET Inegraed Smar LED Lamp Driver IC wih PFC Funcion Typical Characerisics

10 D MAX [%] OVP VCC [V] f OSC [khz] V CS1 [V] f OSC [khz] V RT [V] MOSFET Inegraed Smar LED Lamp Driver IC wih PFC Funcion Typical Characerisics Figure 19. f OSC vs. Temperaure (RT=87kΩ) Figure 20. V RT vs. Temperaure Figure 21. f OSC vs. Temperaure (RT=5.95kΩ) Figure 22. V CS vs. Temperaure Figure 23. D MAX vs. Temperaure Figure 24. OVP VCC vs. Temperaure 2012 Fairchild Semiconducor Corporaion Rev

11 I DSS [ A] I AD [ A] BV DSS [V] MOSFET Inegraed Smar LED Lamp Driver IC wih PFC Funcion Typical Characerisics Figure 25. I AD vs. Temperaure Figure 26. BV DSS vs. Temperaure Figure 27. I DSS vs. Temperaure 2012 Fairchild Semiconducor Corporaion Rev

12 MOSFET Inegraed Smar LED Lamp Driver IC wih PFC Funcion Physical Dimensions A B 0.65TYP TYP PIN #1 (0.33) TOP VIEW 0.25 C B A 1.27 LAND PATTERN RECOMMENDATION SEE DETAIL A MAX FRONT VIEW C 0.10 C OPTION A - BEVEL EDGE OPTION B - NO BEVEL EDGE R0.10 R (1.04) DETAIL A SCALE: 2: x 45 GAGE PLANE 0.36 SEATING PLANE NOTES: A) THIS PACKAGE DOES NOT FULLY CONFORMS TO JEDEC MS-012 VARIATION AA. B) ALL DIMENSIONS ARE IN MILLIMETERS. C) DIMENSIONS DO NOT INCLUDE MOLD FLASH OR BURRS. D) DRAWING FILENAME : M07Brev3 Figure Lead, Small-Ouline Inegraed Circui (SOIC), JEDEC MS-012,.150-Inch Narrow Body Package drawings are provided as a service o cusomers considering Fairchild componens. Drawings may change in any manner wihou noice. Please noe he revision and/or dae on he drawing and conac a Fairchild Semiconducor represenaive o verify or obain he mos recen revision. Package specificaions do no expand he erms of Fairchild s worldwide erms and condiions, specifically he warrany herein, which covers Fairchild producs. Always visi Fairchild Semiconducor s online packaging area for he mos recen package drawings: hp:// Fairchild Semiconducor Corporaion Rev

2012 Fairchild Semiconducor Corporaion www.fairchildsemi.com Rev.

13 2012 Fairchild Semiconducor Corporaion Rev MOSFET Inegraed Smar LED Lamp Driver IC wih PFC Funcion

14 ON Semiconducor and are rademarks of Semiconducor Componens Indusries, LLC dba ON Semiconducor or is subsidiaries in he Unied Saes and/or oher counries. ON Semiconducor owns he righs o a number of paens, rademarks, copyrighs, rade secres, and oher inellecual propery. A lising of ON Semiconducor s produc/paen coverage may be accessed a Marking.pdf. ON Semiconducor reserves he righ o make changes wihou furher noice o any producs herein. ON Semiconducor makes no warrany, represenaion or guaranee regarding he suiabiliy of is producs for any paricular purpose, nor does ON Semiconducor assume any liabiliy arising ou of he applicaion or use of any produc or circui, and specifically disclaims any and all liabiliy, including wihou limiaion special, consequenial or incidenal damages. Buyer is responsible for is producs and applicaions using ON Semiconducor producs, including compliance wih all laws, regulaions and safey requiremens or sandards, regardless of any suppor or applicaions informaion provided by ON Semiconducor. Typical parameers which may be provided in ON Semiconducor daa shees and/or specificaions can and do vary in differen applicaions and acual performance may vary over ime. All operaing parameers, including Typicals mus be validaed for each cusomer applicaion by cusomer s echnical expers. ON Semiconducor does no convey any license under is paen righs nor he righs of ohers. ON Semiconducor producs are no designed, inended, or auhorized for use as a criical componen in life suppor sysems or any FDA Class 3 medical devices or medical devices wih a same or similar classificaion in a foreign jurisdicion or any devices inended for implanaion in he human body. Should Buyer purchase or use ON Semiconducor producs for any such uninended or unauhorized applicaion, Buyer shall indemnify and hold ON Semiconducor and is officers, employees, subsidiaries, affiliaes, and disribuors harmless agains all claims, coss, damages, and expenses, and reasonable aorney fees arising ou of, direcly or indirecly, any claim of personal injury or deah associaed wih such uninended or unauhorized use, even if such claim alleges ha ON Semiconducor was negligen regarding he design or manufacure of he par. ON Semiconducor is an Equal Opporuniy/Affirmaive Acion Employer. This lieraure is subjec o all applicable copyrigh laws and is no for resale in any manner. PUBLICATION ORDERING INFORMATION LITERATURE FULFILLMENT: Lieraure Disribuion Cener for ON Semiconducor E. 32nd Pkwy, Aurora, Colorado USA Phone: or Toll Free USA/Canada Fax: or Toll Free USA/Canada orderli@onsemi.com Semiconducor Componens Indusries, LLC N. American Technical Suppor: Toll Free USA/Canada Europe, Middle Eas and Africa Technical Suppor: Phone: Japan Cusomer Focus Cener Phone: ON Semiconducor Websie: Order Lieraure: hp:// For addiional informaion, please conac your local Sales Represenaive

MOSFET Integrated Smart LED Lamp Driver IC with PFC Function

April 01 FLS0116 MOSFET Integrated Smart LED Lamp Driver IC with PFC Function Features Built-in MOSFET(1A/550V) Digitally Implemented Active-PFC Function No Additional Circuit for Achieving High PF Application