Lighting Segment March

www.fairchildsemi.com

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LED Lighting Solutions

LED Lighting Solutions

Lighting Segment

March 2010

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Agenda

1. Introduction

2. Low Power AC/DC conversion with minimum component count

=> Primary Side Regulation

3. PFC topologies and LED-lighting solutions

=> Single stage approach

4. High efficiency High Power Applications

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WW Market Trend

_{Government regulations in North America and Europe banned the sales of}

magnetic ballasts for new applications starting in 2005 and banned all sales of

magnetic ballasts starting in 2010

_{Dimming ballasts and HID vehicle headlamps are increasing in demand}

_{For large panel LCD TVs, high voltage backlight units are gaining in popularity as}

they reduce system cost

_{LEDs are expected to replace incandescent bulbs and CCFL as the lighting}

source in general lamps starting in 2009

Maturity CFL LFL Halogen lamp Growth LCD TV backlight (CCFL, EEFL) HID Dimming ballast LED for signage

Decline Incandescent bulb Magnetic ballast Introduction LCD TV LED BLU, LED lighting

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Lighting

• Lighting represents 19% of Worldwide electrical consumption*

• Efforts are underway to replace incandescent lamps with fluorescent, Light Emitting Diode (LED), or High Intensity Discharge (HID) lamps, resulting in significant efficiency improvements

• Integrated ICs reduce component count and overall cost, simplify ballast design and provide greater flexibility, reduce switching losses, extend system life and improve dimming capability

*Source: EERE

If 50 percent of the 370 million households in China us ed an average of five 60 watt light bulbs and switched from incandescent bulbs to CFL bulbs that included F airchild components, enough power would be saved, j ust from the bulbs, to light over 5.8 million homes!

• Ballast control ICs • IGBTs • MOSFETs • HVICs • PFC/PWM controllers • Green FPS™ • Transistors • Rectifiers • Diodes • Optocouplers

LED Overview

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LED Illumination Range

Outdoor & Street Indoor & Outdoor Indoor & Ornament

Drop in replacement Down lighting Ambient lighting

Highway lighting Alley lighting

LED Lighting Segmentation

Solid State Lighting

Indoor & Ornament Lighting

<25W

Non-isolation type: Buck & Boost

Flyback type : PSR

Indoor & Outdoor Lighting

>25W to 100W

Passive PFC + Flyback

Single stage PFC

Active PFC + flyback

Outdoor & Street Lighting 100~500W Active PFC + Flyback(100W~150W) Active PFC + QR Flyback(100W~150W) PFC + LLC Resonant(150W~200W) 6

Fairchild LED Lighting Solutions

7 Ornament Lighting (~ 25W) Isolation topology Non-Isolation topology Indoor/Outdoor (25 ~ 100W) Street (100W~) Buck FAN7700(*) FAN7701(*) PSR Flyback FAN102/103 FSEZ10x6 FSEZ13x7 CRM PFC Single Stage PFC FAN7527B FAN6961 FAN7529 FAN7530 Flyback FAN6300 FSQ0x65 CRM PFC QR PWM Combo FAN6921 LLC Resonant FAN7621S FSFRxx00xx (*) under Planning

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Fairchild’s Focus on Energy-Efficiency

_{World energy concerns are driving the quest for}

increased energy efficiency and regulations aimed towards power savings and efficiency

_{Fairchild’s innovative product solutions increase}

energy-efficiency while simplifying system design, reducing board space, improving manufacturing reliability and decreasing time to market

_{Fairchild is focused on enabling energy-efficiency in}

electronic applications such as cell phones, DVD players, flat panel displays, notebook computers, printers, cameras, TVs, home appliances, power adaptors, power supplies, lighting, motor control and automotive electronics

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Reducing Wasted Energy =

Increased Efficiency

• Converting from incandescent light bulbs to fluorescent or LED lighting = 75% savings

• Moving from single-phase AC motors to variable speed motors =

40% savings

• Changing induction motors to perma nent magnet motors =

5% efficiency improvement

• Reducing standby power in the hous ehold =

5-10% savings of total household us age

Fairchild PSR Solution

Power LED Lighting

Fairchild PSR Technology

Why Fairchild PSR?

Generic Benefits from PSR Technology

• Less components count • Efficiency improved

• Space saving and easy PCB layout

Due to no secondary feedback-circuit needed

Fairchild value added PSR Technology

• CV/CC performance without secondary feedback circuitry

• Green-Mode PWM technology linearly

decreasing switching frequency at light load condition

• Frequency hopping reduce EMI emission • Low start-up and operating current

• Various protection modes enhance safety; Vdd UVLO, Vdd OVP, OTP, and gate output

clamping

• Multi-chip package option built-in rugged VDMOS

Secondary Output

Primary Input

Comparison of FAN103 and FAN102

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Product Portfolio FAN103/FSEZ13x7 FAN102/FSEZ1216

Start up HV start up (JFET 500V) Start up resistor

Power saving <30mW <150mW

Frequency 50KHz 42KHz

ComV (Costant Voltage Loop Compensation)

ComI (Costant Current Loop Compensation)

Built in External comp.

ComR (Cable compensation) Fixed (Built in) Adjustable By Resistor

PSR CV/CC +/- 5% +/- 10%

Creepage Yes No (FSEZ1216)

Package DIP7 and SOP7 DIP8

-CC/CV primary side controller

Very low standby power; few parts

Extremely Low Standby Power

_{Below 30mW at 265V achievable for}

constant current/constant voltage circuit

_{Reduced component count helps this}

High Light Load Efficiency

_{Linearly Decreasing fSW to 370 Hz}

Low System Component Count

_{High voltage start-up circuit}

_{FSEZ13x7 have integrated 700V MOSFET
No need for optocoupler}

General Features

_{50kHz operation
VDD UVLO and OVP}

_{Over temperature protection}

_{Cable compensation for adaptor applications}

(ground COMR if this is not needed)

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Part Number Sense FET Power FSEZ1307 0.5A 700V 7W FSEZ1317 1.0A 700V 10W FAN103 None ~30W

Fairchild PSR Technology

Constant Voltage/Constant Current Control

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-By Measuring the Average Auxiliary Voltage The Output Voltage is determined

-By using the Primary Peak Current, the Inductor Discharging Time and the Switching

Period, the Output Current can be estimated

Technical Details

Green Mode Operation

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The green-mode function provides off-time modulation to linearly decrease the PWM frequency at light-conditions. 370 Hz Vo(AC) 100mV/Div V_COMV 500mV/Div Gate 10V/Div

The FAN103 uses the positive, proportional, output load parameter (VCOMV) as an i ndication of the output load for modulating the PWM frequency.

COMV V Frequency 50KHz 370Hz 0.5V 2.5V +3 KHz -3 KHz 47KHz G (V )1KHz

Fairchild PSR Solution

Power LED Ballast Reference Design

FAN102MY PSR PWM Controller

Global Power Resource Centre Europe

Power-LED Ballast Reference Design

Board Specification : FEB-22x

Board Ref # FEB-22x Output Load : Power-LEDs (x 3)

AC Input Voltage 85 ~ 265VRMS(50/60Hz) 3 Power LEDs in Series

1000mA

Total Output Power 12W

DC Output 350 / 700mA CC Selectable 17Vmax

Board Dimension 147.4mm x 64.8mm x 31mm (L x W x H)

Universal Input LED Ballast using FAN102MY and FCD4N60 SuperFET™

FCD4N60 FAN102MY

Power-LED Ballast Reference Design

FEB-22x Schematic

Single Stage PFC LED Driver

Single Stage Solution:

Flyback topology @ high power factor

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PSUs for LED lighting

Two Stage Approach

1st_{Stage: PFC}

2nd _{Stage: DC-DC Converter}

Single Stage Approach

PFC + DC/DC converter

Less components (less cost)

1 Mosfet (800V)

1 Magnetic element

1 PFC Controller

No PFC diode

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PSUs for LED lighting

Single Stage Approach

PFC + DC/DC converter

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Design Example

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Design 75W Flyback SSPSU

for LED lighting

 _{Design Parameters}

Parameter Value

Output Power 75W

Input Voltage Range 85~265V_AC

Output Voltage 45V

Output Limit Voltage 50V

Duty Ratio at I_{in(max)_pk}, D_{@ Iin(max)_pk} 0.6 Minimum Switching Frequency, f_{s_min}@ V_{in_min} 50kHz

Schematic

25 VCC ISO1 R6 -+5 6 7 8 4 C3 _R7 R8 -+3 2 1 VCC_2 8 4 D1 C2 _R1 R3 C1 Vo Vr I_ref VFB KA358A KA358B R2 R4 R5 RS1 L E D s tr in g

Experimental Results

Feedback circuit

• CV-Mode control

 _{It will work as OVP function if LED strings are} removed from the output stage of PSU.

Feedback circuits for LED lighting

In the LED lighting PSU system, both constant voltage and constant current mode are required.

_{CC-Mode control}

 _{Forward voltage drop of LED string will be varied according to the thermal variation.}  _{Current of LED has to be constant to prevent the thermal runaway}

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Experimental Results

Power factor & Efficiency

Po Vac: 110V Vac: 220V 75 W 0.997 0.955 Line Current Line Voltage PF=0.997 PF=0.955

Power factor Under CV-Mode

Efficiency

Vin Vac: 110V Vac: 220V

Eff._Max 85.17% 85.95%

LED Street Lighting

Three Stage Solution:

PFC + LLC resonant topology + Buck

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PSUs for LED lighting

Two Stage Approach

1st_{Stage: PFC}

2nd _{Stage: DC-DC Converter}

T

FSFRXX00

LLC Resonant Half-Bridge Converter

FSFR Series – Key Features

Key Features

• Variable frequency control with 50% duty cycle for

half-bridge resonant converter topology

• High efficiency through zero voltage switching (ZVS) • Narrow frequency variation range over wide load

range

• Zero voltage switching even at no load condition • Internally optimized dead time (fixed. 350ns) • Up to 300kHz operating frequency

• Pulse skipping at light load condition • Simple remote ON/OFF control

• Various Protection functions: OVP, OCP, AOCP, TSD

H-Vcc CENTRE Tdead DRAIN SOURCE GND VFB VCC Rdead Cpump Cblock Rsense Vin CFB 817 431 DO2 DO1 LO CO Aux. Circuit HS Drv LS Drv P W M C o n tr o ll e r

PWM IC HV IC 2 MOSFET 14mm 26mm Control IC C105 22uF/ 50V Vcc VDL LVcc RT CON CS SG PG VCTR HVcc Ns Vo Np Ns C101 220uF/ 450V R104 7.2k R105 7.2k 6.8uFC107 R107 3.9k JP1 10 R106 270 D 101 1N 4137 C102 22nF/ 630V D 211 FY P2010D N D 212 FYP2010DN C 106 150nF U3 KA 431 C203 47nF R203 33k R205 7k R204 62k R202 1k R 201 10k C201 2200uF 35V C202 2200uF 35V R101 0.2ΩΩΩΩ R102 1kΩΩΩΩ C102 100pF C108 12nF R 206 2k C204 12nF Vin=400Vdc

PWM + MOSFET Drivers +

MOSFETs Integrated

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Product Line up Status

Type

Device P_OUT MOSFET

Package Part No Without Heatsink With Heatsink RDS(ON) BV 3chip 1pkg (integration) 9SIP FSFR2100 200W 450W 0.38_Ω 600V FSFR2100U/US 180W 400W 0.51_Ω 500V FSFR2000 160W 350W 0.67_Ω 500V FSFR1900 140W 300W 0.85_Ω 500V FSFR1800/US 120W 260W 0.95_Ω 500V FSFR1700/US 100W 200W 1.25_Ω 500V Controller

Fairchild Reference Design

High Power Factor LED Ballast using

FSFR2100 LLC Resonant Half-Bridge Converter

FAN6961 BCM PFC Controller

• Universal AC Input

: 90 ~ 265V

RMS

• Total Output Power

:

200W

• Six DC Outputs

: 700mA CC@48Vmax (x 6 channels)

* Can be changed to 350mA@96Vmax

•

Universal Input Voltage

•

Power Factor > 0.98

•

Efficiency > 94% (w/o EMI-Filter)

•

20mm Heigth

•

Up to six outputs, each with 700mA

max.

•

Output voltage/current can be easily

changed

•

Board dimension : 201mm x 79mm x

20mm (L x W x H)

Boundary mode PFC LLC Converter Current Sources for LED

Application Example

Power-LED Ballast Reference Design

Schematic – Power Factor Pre-Regulator

Fairchild Contents IC91 FAN6961SZ Q91 FCP11N60 D94~ D97 IN5407 (x4) D91 D98 FDLL4148 D92 EGP30K D93 BZX85C22

Power-LED Ballast Reference Design

Schematic – Main DC-DC & Current Source

IC1 FSFR2100 IC92 ~ IC97 SG6858/9TZ (x6) Q1~Q6 FQD4N25TM (x6) IC2 KA78L18 OC1 FOD2741BTV Fairchild Contents

Full Load Efficiency 93.7 94.2 94.6 95.1 170 180 190 200 210 220 230 240 250 260 270 VIN [VRMS] ηηηη [ % ] Power Factor 0.95 0.96 0.97 0.98 0.99 1.00 180 190 200 210 220 230 240 250 260 270 VIN [VRMS] λλλλ

Efficiency has been measured

without EMI Filter

200W LED Ballast

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Merci

ا

Grazie