ST Solutions for LED LightingJiří Smutka Industrial & Multi-Market Competence Center Applications Lab Prague, Czech Republic Mai 2011 Presentation Outlook ST LED Driver Product Range - overview 1. Energy-Efficient Solutions for LED Lighting • • Off-Line LED Drivers DC-DC Converters based Solutions 2. ST Solutions for Video Display / Matrix drivers 3. ST Solutions for Communication in Lighting 2 Presentation Outlook ST LED Driver Product Range - overview 1. Energy-Efficient Solutions for LED Lighting • • Off-Line LED Drivers DC-DC Converters based Solutions 2. ST Solutions for Video Display / Matrix drivers 3. ST Solutions for Communication in Lighting 4 High Brightness LED evolution . 9 respectively for Residential and Commercial. especially input ones (high voltage stress) Retrofit lamp & bulb replacement 3-20W output power range solutions Space constrains (lamp housing) Compatibility with existing wall dimmers 6 . Also <25W PFC needed to solve the problems related to harmonic distortion in multi power systems. For high lifetime and MTBF (key advantage of LEDs).7 and > 0.Key Factors for AC/DC LED Drivers Power Factor Lighting Power Supplies > 25W must have full PFC.1: PF > 0. it is strongly recommended NOT using electrolytic capacitors. Version 1. Reliability ENERGY STAR Program Requirements for Solid State Lighting Luminaries. SEAxx Key Benefits: Integrated Robust Miniaturized form factors Key Benefits: Control and power section separated Post-regulation with dimming No limitation to the number of LEDs within a string Cost-effective solution Key Benefits: Extended temperature range Innovative zero voltage switching & resonant topology: efficiency > 92% Aggressive form factors 7 .SEAxx TSMxx. VIPerPlus) L656x + MOSFET+RECTIFIER L656xA/T + L6599A/T + MOSFET + SYNC/RECTIFIER DISCRETE L6562A + MOSFET CC/CV CC/CV TSMxx.Driving LEDs using AC-DC Solutions 3 to 10 W applications 10 to 75W applications 75W and up applications (street lighting) MONOLITHIC HIGH PF DISCRETE HIGH PF + LLC HVLED805. Driving LEDs using AC-DC Solutions Isolated Non Isolated 150W PFC Resonant Buck CC/CV HV Buck PFC CC/CV PFC Flyback Buck CC/CV CC/CV HPF Flyback 3W Buck HPF CC/CV Buck-Boost CC/CV Flyback Flyback CC/CV CC/CV Buck Buck-Boost CC/CV 8 . LED 3 – 10W = monolithic solution HVLED805 Low components Isolated Primary side regulation CC/CV Viper + family General auxiliary supply use Isolated or non isolated solution HPF flyback as option Flyback CC/CV HPF Flyback Flyback CC/CV Buck Buck-Boost CC/CV 9 . 7 10 N.A.HVLED805 SOURCE • CC/CV regulation with no SOURCE optocoupler Vcc • 800V. burst mode operation at noload for under 60 mW consumption • Automatic self-supply • Input voltage feedforward for mains-independent CC regulation 1 16 DRAIN 2 15 DRAIN 3 14 DRAIN 4 13 DRAIN 5 12 N. 8 9 N. avalanche rugged internal GND power MOSFET IREF ZCD/FB • Internal HV start-up circuit COMP • Quasi-resonant ZVS operation CDC • Valley skipping at medium-light load .A. • SO16N • Low quiescent current (<1mA) • SO16 package 10 .C. 6 11 N.A. Constant Current ctrl CC-CV REGULATOR PWM CONTROLLER GND Constant Current Controller Opto-coupler for galvanic isolation • 2 Ics + 1 Opto • Rsense*I² dissipation LED current set by resistor • Only one IC • No secondary Rsense dissipation 11 .Improved BOM.Vcc for HVLED805 . Form Factor & Efficiency Standard Isolated Solution Primary Side Regulation Solution with HVLED805 Sense resistor in series with LEDs Vout Vin Auxiliary winding : . Typical load regulation cv/cc 6 Output Voltage [V] High voltage accuracy +/-2.5% 5 4 3 HV Startup is ON 2 1 0 0 200 400 600 800 1000 1200 Output Current [mA] High current accuracy: +/-5% 12 . t Ip I c R TFW V c S Q R t IREF Vc R - + VC TFW Ic Rs IC Steady-state relationships valid in DCM only: IREF Iout IPpk VC TFW R TS T 1 ISpk FW 2 TS VC ISpk 0 IREF - Rs n Iout n R IREF 2 Rs Note: Iout not dependent on either Vin.Current Regulation Principle Ts Vin IPpk Is AUXILIARY WINDING Iout Constant current t ISpk IREF Demag . Vout or Tsw . AC IN D1 STTH1L06A GND D2 R5 LL4148 10 C10 C4 2.2uF 400V R2 120K C8 100uF Low ESR C9 100uF Low ESR R9 N.2nF ALTAIR05T HVLED805 VDD 2.60 Hz o Maximum (rated) output power: 4.35A 470uH AC IN BR MB6S.2 W o Output: IOUT = 350 mA ± 5% o Over voltage = 12 V max o Current ripple < 10% IOUT o Minimum switching frequency in o normal mode: 70 kHz o Target average efficiency (from 1 to 3 LEDs) > 70 % o Maximum input power in no-load < 100 mW 14 .2uF 400V 22 1W C3 1nF C2 2.RC R1 STPS1H100A C1 2.6K IREF C6 470nF C5 1nF DRA IN R6 10k GND C7 4.EVALHVLED805 .5V FB/ZCD + CURRENT CONTROL COMP R4 5.5 W Applications: HVLED805 Primary Side Controlled Flyback Topology T1 CORE E13 L1 D3 12V .2uF U1 R3 33K 2.265 VAC o Main frequency (fL): 50 .3 R8 10 o Input voltage range (VIN): 185 .7nF SOURCE R7 3.C.0. EVALHVLED805 .5 W Applications: HVLED805 Primary Side Controlled Flyback Topology Performance 15 . Viper + Portfolio and Roadmap 30 24 7 4.5 VIPer07 VIPer17 VIPer27 VIPer37 VIPer05 VIPer15 VIPer25 VIPer35 VIPer28 VIPer38 VIPer06 VIPer16 VIPer26 4W 6W 12 W 15 W DIP7 SSO10 DIP7 SO16N DIP7 SO16N SDIP10 Controller SuperMESH Technology 800V avalanche rugged Power MOSFET 16 . Main features Basic features PWM operations with settable IDLIM 800V Avalanche Rugged Burst Mode Over Temperature shut down VIPer x7 VIPer x8 Fixed Frequency with Jittering Brown out Extra Power Timer VIPer x5 VIPer x6 Quasi Resonant Fixed Frequency with Jittering Brown out Internal OA .simple Non Isolated loop Over Voltage No auxiliary Over Load Delay Feedback disconnection 2° OCP Auto restart (fixed time) Soft start Peak current setting Auto restart 17 . Using of current Lim feature for HPF Max peak current is programmed by external Resistor – Rlim This pin can be used to modulate peak current by input sin voltage => allows to achieve High Power Factor 18 . then input Elcap necessary and lower output removal and Vipx6 family usage (op-amp 19 .No PF required removal of component capacitance .5W and 7W high PF Off-line LEDs driver schematic ALTERNATIVES .3.No isolation required optocoupler available) . 265Vrms Input voltage range Open / Short circuit protection No High voltage electrolytic capacitors Optional low voltage electrolytic capacitor >80 % Efficiency EVLVIP27-7WLED AN3212 20 .9 ) 3.3 to 10 W Applications: VIPerPlus High Voltage Converters in Flyback Topology Power Factor Correction ( > 0.5W ( 350mA ) with VIPer17 and 7W (700mA) with VIPer27 90 . CH1(brown) = Vdrain 21 . CH3(red) = Vout.7W high PF Off-line LEDs driver LEDs current ( 700mA no e_caps ) Vac = 115V Vac = 230V PF = 99% PF = 96% CH4(green) = Iout. CH1(brown) = Vdrain 22 .7W high PF Off-line LEDs driver LEDs current ( 700mA with 1000uF ) Vac = 115V Vac = 230V PF = 99% PF = 97% CH4(green) = Iout. CH3(red) = Vout. associated to TSM1052.7 • Compliant to energy saving regulations • No high voltage el-cap usage • High reliability (extended MTBF) Evaluation board Application note Description STEVAL-ILL017V1 AN2811 Not Isolated Flyback constant current source with VIPer17HN STEVAL-ILL026V1 AN2961 3W not-isolated off-line LED driver based on VIPer22AS EVLVIP17-5WCHG AN2840 Constant current output Viper17 flyback converter 23 . constant voltage. Buck topology for not isolated applications with low cost current control circuit Key features Main benefits • Single package approach: • integrated • robust • sophisticated • Miniaturized form factors • Easy design • High power factor > 0.3 to 10 W Applications: VIPerPlus High Voltage Converters in Flyback or Buck Topology VIPerPlus high voltage converters in flyback topology. constant current controller ( or new CC/CV controller SEA05). 4 (PFC chip) HPF Flyback PFC converter HPFF Buck converter Buck Buck-Boost CC/CV PFC Flyback Buck CC/CV CC/CV 24 .LED Middle power (10W to 70W) L6562.3. STM PFC Chips Roadmap C C M L4981A/B L6562A enhanced Input volt. Feedforward PWM interface AVG CURRENT MODE PFC Input voltage Feed-forward Load Feed-forward Progr./dyn. Powerful gate driver L6563/S L6563/H ADVANCED TM PFC High voltage start-up TBO FDBK disconnection Brownout Reduced consumption PWM interface Input volt. Turn-On Threshold OVP & Over-current Protection T M L6564 TM PFC L6562A L6562 IMPROVED TM PFC TM PFC L6562 enhanced Lower CS threshold L6561 New gate driver L6561 pin-to-pin TM PFC Higher efficiency at Improved THD 8pin Extended supply range light load OVP stat. Feedforward 25 . 7 V LOWER & UPPER CLAMPS + ZERO CURRENT DETECTOR GND STARTER - 5 ZCD APPLICATIONS: PFC PRE-REGULATORS FOR: • ELECTRONIC BALLAST • EC61000-3-2 COMPLIANT SMPS (FLAT-TV.Features & Block Diagram L6562A INV TRANSITION MODE PFC CONTROLLER 1 DIS 0.2 V 2 3 CS 4 MULTIPLIER AND THD OPTIMIZER + VREF = 2. GAMES) • HI-END AC-DC ADAPTER/CHARGER 26 .5V VOLTAGE REGULATOR VCC MULT - + • Precise Internal Reference (1% @25°C) • 1. DESKTOP PC.45 V 0.5mA typ.1V Current Sense threshold • DIGITAL Leading-edge blanking on Current Sense • Disable function on FB input • Ultra Low Start-up Current (<60µA) • Low Quiescent Current (2.4 V 0.) • ZCD input for TM • Two-level OVP Protection • THD optimizer circuit • Extended supply voltage range • -600 / +800mA totem pole gate driver with pull-down and voltage clamp • Package: DIP-8/SO-8 ERROR AMPLIFIER COMP LEADING-EDGE BLANKING OVERVOLTAGE DETECTION DYN OVP 8 1V - VCC + PWM COMPARATOR STAT OVP INTERNAL SUPPLY BUS R Q 25 V DRIVER & CLAMP S 7 GD UVLO + VREF2 DIS Starter stop 6 1. MONITOR. Feedforward PWM interface Extended thermal range 27 .STM PFC Chips Roadmap L6563/S ADVANCED TM PFC L6563/H High voltage start-up L6564 TM PFC L6562AT TM PFC = L6562A = L6563/S TM PFC ADVANCED TM PFC = L6562A = L6562A TM PFC TM PFC + + + + TBO FDBK disconnection Brownout Reduced consumption PWM interface Input volt. Feedforward High Voltage Start up Input volt. Application of L6562A family in LED PFC Transition mode PFC up to 150W for WR FOT up to 3kW HPFF (High Power Factor Flyback) Simple isolated solution up to 50W Evaluation board Application note Description EVL6562A-LED AN2983 Constant current inverted buck LED driver using L6562A EVL6562A-LED AN2928 Modified buck converter for LED applications STEVAL-ILL019V1 UM0926 32W High PF Flyback offline + RGGB LED driver with LED channel brightness regulation EVL6562A35WFLB AN2838 35 W wide-range high power factor flyback converter demonstration board using the L6562A STEVAL-ILL13V1 AN2928 UM0670 80W off-line LED driver with dimming based on L6562A STEVAL-ILL27V1/2 AN3111 18 W single-stage offline LED driver based on L6562A STEVAL-ILL034V1 AN3256 LED driver for an A19 lamp based on the L6562A for USA market Buck Modified Buck converter 28 . low-cost. IL IAC ON Suitable for lower power levels (< @150W approximately) OFF MOSFET VCC ZCD RECTIFIED MAINS MULT INV COMP L6561 L6562A L6564 L6563x (*) GND (*) L6563: 14 pin IC with advanced logic GD CS 29 .PFC: transition mode (TM) control Variable switching frequency. constant TON Operation close to the boundary between continous and discontinuous conduction mode. simple. @ZVS Peak current mode control. 10 to 50 W Applications: Transition Mode PFC in Isolated Flyback and inverted Buck Topology HPF Flyback Section: • Line voltage range: 90 to 265 VAC •Power factor (load = 50 %): 0.9 minimum • Minimum efficiency: 85 % at full load inverted buck section: • CC operation up to 600 kHz • Fixed-Off-Time Peak-Current-Mode control • No sub-harmonic oscillation • No need for slope compensation • High-efficiency (>90% with 6+ LEDs) •Ripple current is constant also when input and output ( n. LED )voltage change • Very deep dimming (<1% @250 Hz) due to IC immediate restart • Up to 200 V LED driving capability 30 . constant voltage. transition mode power factor corrector in flyback topology. •associated to TSM1052. constant current controller (or new CC/CV controller SEA 01 coming soon) for single LED columns •Associated to inverted buck converter based on L6562A or DC/DC converter for multiple LED columns Key features Main benefits • High power factor fly-back topology supported > 0.35W Isolated HPFF and inverted Buck Topology L6562A.9 • Compliant to energy saving regulations • Control and power section separated • Suitable for high power size • Design flexibility • Post-regulation with dimming solution • Dimmable solutions • High output voltage • No limitation to the number of LEDs within a string • Based on cheap controller and MOSFETs • Cost-effective solution Ideal for: Single /Multiple LED columns STEVAL-ILL019V1 UM0926 31 . L6562A Isolated High PF AC/DC LEDs Driver 35W: EVL6562A-35WFLB SuperMESH3 MOSFET 32 . Inverted (modified) Buck Topology STEP-DOWN based on low voltage controller VIN nVLED D L DIODE spec • VRRM > VIN • IAVG = I LED x (1 – D) MOS spec • VDss > VIN • IRMS2 = I LED2 x D M INDUCTANCE • charges on VIN – nVLED • discharges on nVLED I LED M D M 33 . Transition Mode PFC in Inverted Buck Topology STEP-DOWN based on low voltage controller VIN 48 VDC C6 PWR GND D1 VCC 15V LED L1 C2 VCC R7 GND M1 L6562A GD L6563A CS INV R2 350 mA ON time limited by peak current R4 COMP MULT ZCD R8 R3 DIMMING 1 (PWM 250HZ VARIABLE DUTY ) D2 D3 I LED R5 R9 M D4 C7 R6 D M C5 FIX OFF time 34 . L6562A DC-DC Inverted Buck Improvement By adding the connection marked in red. Being K = R4/ R+R4 and already It is possible to demonstrate that ILED = (VCS – K Vin)/Rs fixed K from the former equation. Where : it is possible to determine R4 and VCS = Current Sense Threshold Voltage K = (TOFF Rs)/ 2 L1 calculate R Rs = R8 in the below schematics VIN 48 VDC C6 D1 LED PWR GND L1 VCC 15V 10% VCC C3 GND GD R7 M1 L6562ACS R2 INV COMPMULTZCD C2 Compensation resistor size R4 R8 R3 R D2 D3 R5 R9 D4 R6 C5 C7 EVL6562A-LED AN2983 + AN2928 35 . makes the output current ripple NOT DEPENDENT on the how many LEDs are supplied. 3V to 35V • Knob for regulation STEVAL-ILL013V1 AN2928.80 W and up Applications (Street Lighting): PFC Boost + inverted Buck Converter HIGH POWER FACTOR BOOST CONVERTER Vin = 88V to 265V ac MODIFIED BUCK CONVERTER STTH1L06 80W LOAD 400V Input Filter STPSC806D STP8NM50FP PF controller L6562A HIGH POWER FACTOR BOOST CONVERTER: • Transition mode operation • Wide input voltage range 88V to 265V ac • Regulated output voltage 400V MODIFIED BUCK CONVERTER: • Continuous conduction mode operation • Fix Off Time (FOT) network designed • LED current setting 350mA. UM0670 36 . 700mA and 1A PF controller L6562A STF9NM50N PWM GENERATOR Microcontroller ST7LITEU05 : PWM GENERATOR • PWM frequency 250Hz • 0% to 100% DC variation • Input voltage 3. Suitable for residential lighting • Open Load Protection • Short Circuit Protection • Robust Evaluation board Application note Description STEVAL-ILL027V1 AN3111 18 W single-stage offline LED driver AN3256 LED driver for an A19 lamp based on the L6562A for USA market STEVAL-ILL034V1 HPF Inverse Buck 37 .8 • Compliant to energy saving regulations.L6562A: HPF Buck-Boost & Inverse Buck HPF Buck Boost Key features Main benefits • Buck-Boost topology • Simple • Low Cost • Transition Mode Operation • Lower Switching Losses • Spread of EMI Spectrum • High power factor > 0. STEVAL-ILL027V1 470nF/~305V ac 2 470nF/~305V ac L1 20mH + P2 2 C8 D1 C10 3 4 1 R12 100K R15 500K R16 100K R9 500K LED - C9 1 - 150nF 1 ~305V ac C1 R14 100K 2 100uF/100V LED + D8 D7 T1 STTH1R06A NC 1nF/50V 1 R10 20K INV VCC COMP R3 12K L6562AD ZCD R4 12K D3 GD NC 5 R5 CS 2 GND R8 100K 6 R7 130K 3 U1 8 C7 33R Q1 7 STD11NM50N 4 2.2uF/50V C6 MULT C5 STTH3R06A R6 2R7 R11 2R7 38 . 2uF/50V C6 MULT C5 STTH3R06A R6 2R7 R11 2R7 39 .STEVAL-ILL027V1 470nF/~305V ac 2 470nF/~305V ac L1 20mH + P2 2 C8 D1 C10 3 4 1 R12 100K R15 500K R16 100K R9 500K LED - C9 1 - 150nF 1 ~305V ac C1 R14 100K 2 100uF/100V LED + D8 D7 T1 STTH1R06A NC 1nF/50V 1 R10 20K INV VCC COMP R3 12K L6562AD ZCD R4 12K D3 GD NC 5 R5 CS 2 GND R8 100K 6 R7 130K 3 U1 8 C7 33R Q1 7 STD11NM50N 4 2. 4 (PFC chip) + L6599A(T) PFC converter Resonant converter (isolation) PFC Resonant Buck CC/CV 40 .LED High power (>70 – 80W) isolated L6562.3. 7 A • Efficiency: >90% @ 115Vac – Full load • No-load consumption 0. JEITA-MITI • EMI: meets EN50022 Class B • Safety: meets EN60950 • MIXED PTH/SMT FOR LABOR COST REDUCTION. • 1 heat-sink only required (for input bridge) • PCB double layer 90x170 mm • Maximum height: 30 mm Ideal for: Evaluation board Application note Description Multiple LED columns EVL130W-SL-EU AN3105 48V-130W Led Street Lighting SMPS based on L6562AT & L6599AT for European input mains range EVL130W-STRLIG AN3106 48V-130W Led Street Lighting SMPS based on L6562AT & L6599AT for wide input mains range STEVAL-ISC002V1 90W PFC + Resonant CV SMPS 41 .3W @ 230Vac • Long life.80 W and up Applications (Street Lighting): Transition Mode PFC + Resonant Controller MAIN FEATURES: • Wide input mains range (85 to 305 Vac) • Output voltage: 48V @ 2. high MTBF (No EL-CAPS) • Mains harmonics: according to EN61000-3-2. 5 f r1 k k Q=0.76 f r2 Q=10 0 0.1 1 10 x f f r2 f f r1 42 . 2 resonant frequencies fr1 Q=0.5 B x kC 1 × 2 1 1 2 Ls Cr 1 2 ( Ls Lp) Cr 0.5 Qmax 2 ZVS-ZCS borderline M x kC 2 Qmax a Vout x kC QVin max M M M x kC 10 fr2 1 Resonance: Load-independent point All curve have slope = -1/ k Q=0.Resonant Converter: LLC Circuit 2 f 1 m 1 2 k kC 3 Capacitve region Current leading (ZCS) a Q=0 (open output) Inductive region Current lagging (ZVS) 2.5 k=5 M x kC 0 M x kC 0.38 Iout 1 3 reactive elements.19 1. ZCS.Resonant Converter : LLC Circuit & Features LLC features Q1 Half-bridge Driver Vin Cr Ls Center-tapped output with full-wave rectification (low voltage and high current) Multi-resonant LLC tank circuit High efficiency:>96% achievable Q2 Lp Vout Variable frequency control LLC tank circuit Fixed 50% duty cycle for Q1 & Q2 AC/DC Stage Vout SuperMESH3 MDmesh II FDmesh II Preferably integrated into a single magnetic structure Single-ended output with bridge rectification (high voltage and low current) Dead-time between LG and HG to allow MOSFET’s ZVS @ turn-on fsw fr. sinusoidal waveforms: low turn-off losses. then no recovery losses No output choke. low EMI Equal voltage & current stress for secondary rectifiers. 43 . cost saving Integrated magnetics: both L’s can be realized with the transformer. variable frequency control of ZVS resonant Half Bridge (HB) Up to 500KHz operating frequency Superior stand-by performance Burst-mode operating at light load Direct interface with PFC controller High performance protections Two-level OCP: frequency-shift and latched shutdown Latched disable input Input for brownout protection or power ON/OFF sequencing SO16N DIP16 Non linear soft-start for monotonic output voltage rise High accuracy oscillator 600V rail compatible high side gate driver with integrated bootstrap diode and high dV/dt immunity 300/800 mA high side and low side gate drivers with UVLO pull-down Available in PDIP16 and SO16N packages Application note Description AN2450 LLC resonant half-bridge converter design guideline AN2644 An introduction to LLC resonant halfbridge converter 44 .L6599A: an IC to remember 50% Duty Cycle. Interface with PWM/QR Controller PFC PRE-REGULATOR DC-DC CONVERTER L6563. L6564 Vinac Voutdc OUT PWM_LATCH case of PFC's anomalous operation L6563 can be turned OFF PWM PWM_STOP L6563/4 PWM is turned OFF in at light load for energy saving PFC_OK RUN PFC FAULT: Low input voltage RUN Feedback disconnection PFC_OK Transformer saturation CS Reduced consumption PWM stopped ( NOT LATCHED) PWM_STOP Reduced consuption PWM stopped (LATCHED) PWM_LATCH 47 . STN3NF06 Application: LED Streetlight LED Driving 48 . Key Benefits: High Efficiency Cost effective 30W 30W 30W ADC-4 PWM-4 PWM-3 ADC-3 ADC-2 Input DC Bus Voltage:48V LED String independent average current control inverted Buck Topology System Power: 4x30W max Switching freq. 60kHz LED current ripple <10% Global dimming from 0% to 100% at 225Hz PWM-2 48V Description & purpose: complete platform (HW/SW) for LED multi-string constant current control based on an innovative methodology (Patent Submitted) Key Features: 30W Digital Constant Current Controller for multi-string LED driving e. Streetlight ADC-1 PWM-1 Key Products: STM8S208RB STPS1L60.g. Digital current control based on STM8 / STM32 Triangular Carrier (Center aligned pattern) OC Register PWM Vsense Average current Gate Signal ADC sampling @ Ton/2 Key Advantages: • Inductor current reconstruction with fine resolution (<=3%) • Cost effective, high performance with real average current control • No passive components for filtering 49 Solution Architecture: 120W LED Street-light and high power 4 channel LED 30W 30W 30W ADC-1 PWM-4 ADC-4 PWM-3 ADC-3 PWM1 PWM-2 ADC-2 48V 30W VIN STM8S20xx Microcontroller PWM-1 ® 50 From Idea to Demoboard: LED Current Controller STM8S-based Four LED Outputs Vin=48V Reset • STN3NF06L • STPS3L60 Trimmer for dimming VuC=5V Joystick for control setting BOM List: • STM8S208RB STM8S STEVAL-ILL031V1 AN3151 51 Multi String Current Control Method Cyclical update of the PI controller output for the 4 channels 52 . Off-line LED drivers: Evaluation boards summary (1/2) Solutions available and technical documentations P/N Order Code Vin (VAC) Iout (mA) Vout (VDC) Comments AN VIPER12A (*) STEVAL-ILL005V1 85 to 265 350 & 700 & 1050 3.5 to 28 Flyback dimmable AN2042 VIPER17HN(*) STEVAL-ILL017V1 176 to 265 500 7 Vmax Not Isolated Flyback constant current source AN2811 VIPER22A STEVAL-ILL026V1 85 to 265 350 0 to 40 Buck constant current source AN2961 (*) plus TSM10x 53 .5 to 15 Flyback constant current source AN1916 VIPER22A (*) STEVAL-ILL001V1 85 to 135 or 185 to 265 350 3. 700mA or 1A 400V 80W PFC Boost + Modified buck converter AN2928 UM0670 L6562AT L6599AT EVL130W-STRLIG 85 to 305 2.Off-line LED drivers: Evaluation boards summary (2/2) Solutions available and technical documentations P/N Order Code Vin (VAC) Iout Vout (VDC) Comments AN L6562A STEVAL-ILL016V2 120Vac±20% 700mA 40Vmax 15W HP Flyback constant current source AN2711 L6562A EVL6562A-35WFLB 90 to 265 700mA 48V 35W HP Flyback constant current source AN2838 L6562A STEVAL-ILL013V1 85 to 265 350mA.7A 48V 130W PFC Boost + LLC LED SMPS DRAFT L6562A STEVAL-ILL027V1 120Vac±10% 350mA 54V 18W single stage off-line LED driver DRAFT L6562A STEVAL-ILL019V1 85 to 265 4x350mA 48V 32W off-line RGGB LED driver UM0926 L6562A EVL6562A-LED 48V (+/-20%) 350mA Up to Vin Downstreem Inverted Buck CC AN2928 54 . Presentation Outlook ST LED Driver Product Range . Energy-Efficient Solutions for LED Lighting • • Off-Line LED Drivers DC-DC Converters based Solutions 2. ST Solutions for Video Display / Matrix drivers 3. ST Solutions for Communication in Lighting 55 .overview 1. Ni-MH and alkaline battery systems • Automotive battery range LED770x L7987/8 up to L598x L7980/1 L7985/6 L597x L6902 L692x 63 V in development ST1S10 L6726A* LED770x PM6600 A597x L692x STLA02 L6920 * PWM Controller Buck topology (Typical) Boost topology for multi-rows applications Boost topology Buck Boost topology STCF07 .Driving LEDs using DC-DC Switching Regulators DC BUS powered applications Battery powered applications Up to 48 V • Single & multiple Li-Ion. LED7706) Ideal for: Consumer: mid to large size LCD TV. displays. emergency lighting . MNT Evaluation Board Application note Description Automotive: navigation displays and dash board STEVAL-ILL020V1 AN2809 LED7706: 6-row / 30-mA LED driver with boost converter for the backlight of LCD panels STEVAL-ILL021V1 AN2810 LED7707: 6-row 85 mA LED driver with boost converter for LCD panel backlighting Industrial: lighting.5A • Parallelable channels for higher current (LED7707) • LED current: up to 85mA/ch (LED7707) • Channel to channel current mismatch: ±2% • Up to 20kHz PWM dimming (1%-100%.5 to 36 V • Maximum RMS switch current: 2.LED770x: boost topology Slope Compensation MAIN FEATURES: • Vin = 4. flexible and cost effective solutions capable to drive up to 80 LEDs. with PWM or SMBUS interface Key features Main benefits • Up to 6/8 ROWs with 30 mA max current capability (adj. Thermal shutdown • Full and flexible fault management • 500 ns minimum dimming time (1% minimum dimming dutycycle at 20kHz) • ±2 % current matching between rows • Superior brightness uniformity. Programmable OVP protection.PM660x: Monolithic LED Driver Family for Mobile PC LCD Panel Backlighting Compact.) • ROW disable option • Great flexibility in the application coverage of all the mobile PC screen size (8”-17”) • Internal Power MOSFET • Save application cost and real estate • LED failure (open and short circuit detection) • Soft-start. with tight current matching • Pulse-skip power saving mode at light load • Longer battery life and new energy regulation compliancy (VESA-NEBL) • Ceramic output capacitor supported • Save BOM cost • Housed in QFN4x4 24L package • Compactness Ideal for: Notebook/ Netbook/ Nettop . PM6600: Typical application circuit Monolithic solution with BOOST and 6 embedded rows drivers.s Main applications: • Notebook/ Netbook/ Nettop Ideal for: Wide input voltage range (4.30 mA LEDs driver with boost converter for notebook pc LCD panels backlight based on PM6600 Documentation. ±2 % current matching between rows Design-support material Description Evaluation board STEVAL-ISA056V1 6 rows . application components calculation ws Available on request . capable to drive up to 60 LED.7V-28V) Up to 10 white LEDs per row High efficiency (>90%) Current capability per row up to 30mA . ±2 % current matching between rows Design-support material Description SMBUS/PWM interface Evaluation board & Application Note Available on request .3 V-28 V) Up to 10 white LEDs per row High efficiency (>90%) Current capability per row up to 30mA .PM6602: Typical application circuit Monolithic solution with BOOST and 8 embedded rows drivers. capable to drive up to 80 LED. Main applications: • Notebook/Netbook/Nettop Ideal for: Wide input voltage range (3. PWM/SMBUS interface is adjustable. 3 Mhz Fixed Frequency • Small Inductor •Less than 1µA Stand-by Current • Longer battery life • PWM Input Brightness Control with 300:1 Dimming Range • Tight Dimming capability • Internal Soft Start • No Inrush Current) • Ceramic output capacitor supported • Save BOM cost • Package DFN 2x2 6L • Compactness Ideal for: Small LCD Display Backlight (7”).S.5V To 12V • Suitable for portable devices powered by a single cell Li-Ion battery • 2.STLA02 20mA Boost LED Driver for Backlight L VIN LX VOUT CIN VIN RFB STLA02 EN/PWM GND FB ILED Key features Main benefits • Input Voltage Range 2. Keyboard Backlight E. Available . MAX = 2A => ILED. fsw=250kHz.Driving LEDs with L597x family: alternative topologies: Positive Buck-Boost L5973D #LED limited by: IOUT.5V.78% with VSENSE=525mV ILED=500mA 6 10 DA is the actual duty cycles considering power losses Rough Estimation from calculus: VF=3.5% and -4. L=47uH ILED VFB RS 1 R2 R1 VREF R2 RS R1 Max # LED .MAX 1 D A IOUT.MAX Vin=12V Vin=24V ILED=350mA 10 17 LED Accuracy: +4. adj up to 1 MHz) • Synchronization capability (180° out of phase) • Small output filter • Small input cap • Internal Soft-start • No inrush current • Inhibit pin • Energy saving • Suitable for MLCC output filter • Small & cheap Cout .5 V up to 28 V) • Flexibility of the application (5 V.L7980/1: up to 28 V. 3 A monolithic step-down Ideal for: Driving up to 6 LEDs with Vin up to 28 V General lighting/ MR16 halogen bulb replacement L7985/6 up to 38V in development Key features Main benefits • More than 3A in small QFN3x3-8L or in HSOP8 package • Minimum external component count • Compactness • P-channel power MOS • No bootstrap capacitor required • 100% duty cycle • Save application cost • Wide input voltage range (4. 12 V buses) • Compatible with MR16 standard • Adjustable switching frequency (250 KHz. 6V Functionalities High switching frequency to ensure compactness Significant efficiency improvement by reducing the voltage reference to less than 200mV Very low current ripple to improve LED lifetime High reliability thanks to convection cooling 0.18V .Application IDEA for LED-MR16 retrofit lamps: L7980 evaluation board L7980 L7980 0.42V 0. SO8 65 .2V device ON .4V device OFF Cycle by cycle over current protection Thermal protection Internal Soft start to reduce inrush current at start up package Typical Application Circuit Package VFQFPN8 4x4 .ST1CC40 – what is it ? ST1CC40 . step down constant current LED driver in small outline Input Voltage range 3.5V – 18V Output current 3A peak Synchronous Rectification to increase efficiency Fedback Voltage Vfb for current sensing very low value 100 mV – thus minimising losses on sensing resistor. LED current = V fb / R sense PWM dimming achieved by toggling Inhibit / DIM pin with square wave of variable duty cycle Fixed Switching Frequency 800 kHz Extra Functions Inhibit .Voltage on pin V > 1. V <0. 5A High Brightness Linear LED Driver based on STC1A UM0422 4.Driving LEDs usign DC-DC converters: Evaluation Boards Summary Part Number Order Code Vin Ioutmax Comments AN STEVAL-ILL007V1 12Vac 12V to 24V dc 1A High Intensity LED driver for MR-16 format based on L5973D L5973D AN2559 L6920D STEVAL-IILL008V1 1V to 3V 350mA Cree LED Flashlight with L6920D AN1941 L6902 STEVAL -ILL010V1 8V to 30V 350mA High Intensity LED Dimming Driver based on L6902 AN2129 STCS1A STEVAL-ILL014V1 4.5A / 2.5V to 40V up to 1.5V to 32V 20mA per channel LEDs Driver with Boost Converter for LCD Panels Backlight AN2809 4.5V up to 20mA White LED Controller in Boost topology AN2333 L6562A EVL6562A-LED 48V 350mA Constant current inverted Buck LED driver AN2928 .8A Buck synchronous LED Driver for high current LED based on L6726A + MOSfets STLD40D STEVAL-TLL001V1 3V to 5.5V to 32V 60mA per channel LEDs Driver with Boost Converter for LCD Panels Backlight AN2810 UM0677 LED7706 LED7707 STEVAL-ILL020V1 STEVAL-ILL021V1 L6726A STEVAL-ILL023V1 8V to 18V 1A / 1. Buck Converters LED Driver Summary . Boost Converters LED Driver Summary .Buck. Boost Converters LED Driver Summary . eDesignStudio: what is it? eDesign studio is a SW platform that helps and speeds-up the design-in of STMicroelectronics products for power conversion applications: AC-DC conversion DC-DC conversion AC-DC LED driving* DC-DC LED driving* *coming soon on www.st.com The new. easy power management design tool . 2.st.com support tools & resources (see below arrows) SW tools simulators & CAE resources simulators Click on SMPS eDesign Studio on the next page Login on my. 2 .Where to find it 1. Go to st. 3. Nothing must/can be downloaded.st.com (register yourself if not yet done) 1 It is also possible a direct access by typing www.com/edesignstudio The external version works only on-line. UPgrades are guaranteed. Energy-Efficient Solutions for LED Lighting • • Off-Line LED Drivers DC-DC Converters based Solutions 2.Presentation Outlook ST LED Driver Product Range . ST Solutions for Video Display / Matrix drivers 3.overview 1. ST Solutions for Communication in Lighting 72 . Car Radios. STP24DP05. STPIC6C/D595 STP08/16Dxxx05. STP24DP05 Special Lighting STP04CM05 Back-Lighting Traffic Variable Message Signs (VMS). signal lights. CHMSL and other lighting applications STP08CP05. STP16Dxx/S05. Monochrome Highresolution Large Displays Dashboards. Full-color. parking guidance systems LED Lighting applications from architectural to special illuminations (mood lighting) LCD panels Backlighting STP1612PW05 STP16PWL05 73 . STP16Cxxx05 STP16Cxxx05 STP16CP/C05. Ovens etc. variable speed limit signs. STP1612PW05 LED Illumination for gaming / gambling machine Front Display Panels & LED Illumination for Washers.Overview on Power Logic Applications Arcade Gaming & Gambling Machine White Goods Large Panel / Signs Automotive Interior & Exterior Traffic Panels / Matrix STP08C/D05. LED drivers Power Logic ST provides a wide range of High-Innovative-Performance products for Design needs to drive LEDs. The STPxxyy05 is the excellent solution to extract maximum performances from LED application. Main Applications require manipulation of LED current and time to produce images: Traffic-Backlighting Display __ G ____ CLR SRCK SERIA L IN Gaming Machine and White goods Shift Register (serial to parallel) SERIA L OUT Architectural Lighting Power DMOS O/Ps Mono-Multi-Full-Colour LED display/signs Enable and Latch RCK Typical application PG ND Series STPxxyy05 KEY Features: Key Advantages: SPI interfaces, PWM, Current Gain High accuracy on current driving LEDs driving constant current (except STPIC6C/D595) Footprint Compatible for 8 and 16 channel full output error detection, auto power shutdown Extended temperature range -40 to 125C 4,8,16,24 Channel drivers 1 to 400 mA driver current range per channel 74 STP08/16xxy05 – 8/16 channels, 5-100mA LED drivers OUT 0 OUT 1 OUT 15 R-EXT Thermal shutdown Analog stage Open/Short Circuit Detector OE/DM2 LE/DM1 Control logic Latch and Enable Power saving detection SDO SDI 16 bit shift register CLK 76 STPxxyy05 summary ΔILED Part Number N ch ILED (mA) Between bits Between ICs Error detection STP04CM05 4 80 ÷ 400 ±1% (80÷400mA) ±6% STP08CP05 8 5 ÷ 100 ±1.5% (20÷100mA) ±3% STP08DP05 8 5 ÷ 100 ±1.5% (20÷100mA) ±5% STP16CP05 16 5 ÷ 100 ±1.5% (20÷100mA) ±5% STP16CPS05 16 5 ÷ 100 ±1.5% (20÷100mA) ±5% STP16DP05 16 5 ÷ 100 ±1.5% (20÷100mA) ±5% STP16DPS05 16 5 ÷ 100 ±1.5% (20÷100mA) ±5% STP16CPP05 16 3 ÷ 40 ±1.2% (5÷40mA) ±5% STP16CPPS05 16 3 ÷ 40 ±1% (5÷40mA) ±2% STP16DPP05 16 3 ÷ 40 ±1% (5÷40mA) ±2% STP16DPPS05 16 3 ÷ 40 ±1% (5÷40mA) ±2% STP16CPC05 16 5 ÷ 100 ±1.5% (20÷100mA) ±5% STP24DP05 24 5 ÷ 80 ±6% ±3% STP1612PW05 16 3 ÷ 60 ±1.5% (5÷15mA) (15÷80mA) (3÷60mA) Auto Power Saving Balanced Turn ON/OFF Staggered output delay ±6% ±6% 77 .8 B1.3v µC Main features Application • Full-color High Resolution LED Display • Colored Traffic Signs 78 .5V) • Thermal Shutdown with flag pin • 25MHz Clock Frequency 5v 3... 5-80mA LED driver LED Block Temperature Sensor SPI R1.STP24DP05 – 24 channels.8 G1.8 LE DM STP24DP05 OER/G/B • 8 x 3 Channel groups of constant current output channels • Adjustable output current through one external resistor for each group of 8channel (5-80mA) • Short and Open Output Error Detection • Serial Data IN / Parallel Data OUT • Gradual output delay (30ns for each group RGB) • Low voltage power supply (3V to 5. 12/16 bit Gray-scale.. 8-bit current gain control SPI out1 STP1612PW05 LE µC out2 …. 3-60mA LED driver.STP1612PW05 – 16 channels. 256 steps in two selectable ranges • Gradual output delay (40ns for each group of 4 channels) • Selectable 16-bit/256-bit serial data in format • 30MHz clock frequency VLED OE Main features REXT Applications • Video display LED panels • RGB backlighting • Special lighting 79 .. out16 DM • 16 constant current output channels • Adjustable output current through one external resistor (3-60mA) • Selectable 12/16-bit gray-scale brightness control • Selectable enhanced PWM for “ghost effect” reduction • Short and open LED detection • 8-bit current gain control. Energy-Efficient Solutions for LED Lighting: Brochure http://www.st.com/stonline/products/promlit/pdf/brlig . Presentation Outlook ST LED Driver Product Range . ST Solutions for Communication in Lighting 81 . ST Solutions for Video Display / Matrix drivers 3.overview 1. Energy-Efficient Solutions for LED Lighting • • Off-Line LED Drivers DC-DC Converters based Solutions 2. light color. lamp rotation for Wired Communication systems (twisted pairs + RS485 as PHY) in Theatre Stage Lighting.What is DMX 1/2 DMX = Digital MultipleX for remote control of advanced lighting system. Exhibition Lighting… 82 . including motorized lamps to set light intensity. scanner. Very simple protocol – only 8bit data one after another 7x DMX channels 0 Lamp Intensity 1 Rotation X Axis (Course) 2 Rotation X Axis (Fine) 3 Tilt Y Axis (Course) 4 Tilt Y Axis (Fine) 5 Color Selection 6 Gobo Selection Lamp example 83 . Serial transmission and daisy chain configuration up to 512 nodes (so called DMX universe) with max time 22ms (no delay visible) The multiple receivers are connected to the DMX host in a daisy-chain manner and every packet goes through every receiver.What is DMX 2/2 DMX512 uses asynchronous data transmission up to 250kBd/s (to dimmers. motorized decoder). receiver or standalone LED Intensity Control using a 120Hz PWM from 0% to 100% Connection to multiple receivers up to 512 to a single host controller False packets rejection.STEVAL-ILL030V1 . Key Product: Typical Applications: STM32F103 LDS3985M33R (voltage reg) STCS1APUR ESDAULC6-3B6 (USB protection) STBP120AVDK6F (voltage prot.hex) available with the board. The application source (IDE IAR Embedded Workbench) is available only on request and it is covered by license agreement. Allow targeting medium/small size customers for lighting control .) ST485ABDR stage lighting Theaters Choreographic lighting automatic light systems Board Purpose: Make the DALI communication available also on STM8 microcontrollers and have a simple demonstrator. design and DMX512 communications protocol algorithm based on STM32 • • • • • • Follows DMX512 2008 Standard as well as timing constraints Configuration of a single board mode as transmitter.description Ref. reset sequence timing checking Two on-board 3W LEDs and jumper option for driving external LEDs Documentation: • • • • UM1004 (user manual) DMX512 based LED lighting solution UM0792: Demonstration firmware for the DMX-512 communication protocol transmitter based on the STM32F103Zx UM0791: Demonstration firmware for the DMX-512 communication protocol receiver based on the STM32F103Zx SW code (. ERC .GEWISS .LIGHTOLIER .HELVAR . light source addressing digital host control – use low cost microcontrollers on light source side (minimize light source price) DALI MEMBERS: ABB .DIAL .DALI overview 1/3 What is DALI ? DALI = Digital Addressable Lighting Interface for remote control of lighting devices (dimming.MACKWELL .eldoLED .WAGO. .SVEA .ALTENBURGER ELECTRONIC .PHILIPS LIGHTING .ELTAM EIN HASHOFET .EUTRAC .FIFTH .BAG . NIKO .BTICINO CABA .ERCO .SIMMTRONIC SPITTLER .OSRAM .SANDER .UNIVERSAL LIGHTING TECHNOLOGIES VOSSLOH-SCHWABE .G.B.GITRONICA GERARD LIGHTING .TCI .E. automatic on/off switching…) DALI advantages: simple wiring: use standards electrical installation cables (no special communication cables).HÜCO .INSTA .CEAG .DYNALITE .SCEMTEC .ZUMTOBEL 85 .ECKERLE .INFRANET PARTNERS .ME ELECTRONIC PRODUCTS LTD.DELMATIC .XAL GmbH. no special wiring topology simple installation: cable polarity independency.LUTRON .HADLER .ETAP .TRIDONIC . DALI overview 2/3 Example of DALI devices connection: • Example of DALI wiring: 86 . Group 1: Halogen lamp on table Group 2: Circular Fluorescent Lamps Group 3: Halogen lamp on the walls Group 4: Halogen lamp near white Board Group 5: Halogen lamp behind 87 .DALI overview 3/3 Typical application A single control cable can be used to control several different groups of lamps. DALI Implementation “Gateway” “Ballast controller” Target of this marketing package . Allow targeting medium/small size customers for lighting control .com/stm8s -> Resources -> Firmware Key Product: STM8 family STN1HNK60 STN93003 Typical Applications: Home/building automation Lighting Note: STM8S-DISCOVERY is not included in the STEVAL-ILM001V1 Board Purpose: Make the DALI communication available also on STM8 microcontrollers and have a simple demonstrator.st.description DALI communication interface .plug-in module for STM8S-Discovery SW Library • DALI physical layer (GPIO toggling) • DALI stack • New DALI standard compatible • Example for STM8S-DISCOVERY HW module • Isolated DALI interface • Level translation for microcontroller • Current consumption limiter Documentation: UM1032 (board) soon to be published AN3298 (SW Library) soon to be published SW code soon on www.STEVAL-ILM001V1 . SW Library Main user application Example for STM8S-Discovery DALI stack layer DALI commands implementation HW independent (easily portable to STM32) IO pin driver Physical and link layer of DALI interface (bit timing. bus error recovery control. DALI frames transmission/reception) Occupied resources: 2 GPIO pins – selectable (RX and TX) + 1 GPIO interrupt 1 Timer4 (DALI protocol timing) + 1 Timer interrupt 90 . HW interface module Supply selection Current limiter bipolar STN930003 Bridge for bipolar connection Transmitter mosfet STN1HNK60 91 . Driving Fluorescent Lamps Analog ballasts without power factor control (CFLs) Self oscillating (BIPOLARS) Analog Control (L6520 + MOSFET) (L6520 + BIPOLARS) Analog ballasts with power factor control Separate PFC part (L6562A + L6574 + MOSFETs) (L6562A + L6520 + MOSFET) Combo solution (L65685E + MOSFETs) Advanced digital ballasts Separate PFC part (TD22x + L638x + MOSFETs + STM8) Combo solution (L6382 + STM8) 92 . Rst-up 10 : (1.1) Ccp HS 1 FPRE 2 EOL Rpre VCC L6520 3 4 HSD HBCS LSD PWM_det GND PFC L6562A. passive PFC or directly from the main 8 7 CBLOCK 6 5 LRES LS ROUT2 ROUT1 RE1 CRES DZ1 DZ2 RE2 RHBCS • The L6520 can work directly from the rectified main.L6520 – New integrated ballast controller Pulse Transformer Cvcc H. with a passive PFC or with the active PFC L6562A for the best performances 93 .V. V.1) Ccp HS 1 FPRE 2 EOL Rpre VCC L6520 3 4 HSD HBCS LSD PWM_det GND 8 7 CBLOCK 6 5 LS ROUT2 ROUT1 LRES RE1 CRES DZ1 DZ2 RE2 • No change from BJTs to MOSFETs application apart form the Pulse Transformer RHBCS 94 . Rst-up 1 : (1.L6520 – New integrated ballast controller Cvcc H. startup Drivers End Of Life Current Control Circuit Programmable Preheating • The digital core allows to integrate all the functions and protections. minimizing the number of external components 95 . UVLO.Internal Block Diagram Hard Switching Storage time V supply. THE END THANK YOU ! .