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OEM Design-in guide Fortimo LED DLM System – Version 1.0 • Philips Fortimo LED DLM 1100 & 2000 in 3000 K, 3500 K & 4000 K

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Page 1: OEM Design-in guide - futureelectronics.com LIGHTING... · Shape of heat sink 23 The Fortimo LED DLM with the two connected heat sinks and three thermo couples installed 23 How to

OEM Design-in guideFortimo LED DLM System – Version 1.0

•PhilipsFortimo LED DLM 1100 & 2000 in 3000 K, 3500 K & 4000 K

Page 2: OEM Design-in guide - futureelectronics.com LIGHTING... · Shape of heat sink 23 The Fortimo LED DLM with the two connected heat sinks and three thermo couples installed 23 How to

Design-in guide Philips Fortimo LED downlight module system2

Contents1. Introduction 3

Features and benefits 4

Applications 4

2.LEDs,theheartoftheFortimodownlightmodule 5

What is a LED? 5

LED packaging 5

Binning 6

LUXEON Rebel LEDs 6

Fortimo LED DLM addresses the issue of binning 6

Color consistency (SDCM) 7

Miniaturization 7

3.PhilipsFortimoLEDDLMsystem 7

Fortimo LED DLM portfolio 7

Fortimo LED DLM “4000 K” 7

Fortimo LED DLM “3500 K” 7

Fortimo LED DLM “3000 K” 7

Fortimo LED DLM cable 7

Fortimo LED DLM driver 7

The basic principles of the Fortimo LED DLM system 8

Starting characteristics 8

Luminous flux during start period 8

Lumen maintenance 8

Dimming 8

Future range extensions 8

Nomenclature 9

About the Fortimo LED DLM (downlight module) 9

Dimensions of Fortimo LED DLM module and driver 9

Mechanical fixation 10

About the Fortimo LED DLM driver 10

About the Fortimo LED DLM cables 10

4.Systemperformancespecifications 11

5.Lightingperformancecharacteristics 12

Specification of the system after 100 hours 12

UV and other hazards 12

Spectral power distribution 3000K, 3500K, 4000K 13

Dimming characteristics 13

6.Designingaluminaire 14

UL recommendations 14

Electrostatic device (ESD) measures 14

Installation instructions 14

Wiring 14

Connecting to the mains supply 14

Connecting to protective ground 14

Connecting to 12 V 14

Connecting a Fortimo LED DLM driver to the module 14

Fortimo LED DLM cable 15

Outdoor luminaires 15

Secondary optics 15

7.Heatsinkdesignandtemperaturemeasurements 16

General 16

Test requirements 16

Maximum temperature 16

Critical measurement points 16

Operation under built-in conditions 16

Case temperature and thermal circuit 17

Case temperature and Fortimo module performance 17

Operation in free air 17

Heat sink design 18

Thermal conductivity 18

Emission coefficients 18

Size of heat sink 19

Active and passive cooling 19

Passive cooling 19

Air flow 20

Thermal design 20

From the temperature test point Tc (point 1)

to the side surfaces (point 2) 20

From the heat sink to ambient (point 3) 20

Thermal model 21

Calculating your heat sink 22

From the datasheet: 22

Shape of heat sink 23

The Fortimo LED DLM with the two connected

heat sinks and three thermo couples installed 23

How to measure Tc 23

SynJet cooling from Nuventix 24

Nuventix contact information 24

8.Lightinginstallationsandtheenvironment 25

Electromagnetic compatibility 25

Humidity 25

Exposure to direct sunlight 25

Vibration and shocks 25

Standards and approvals 25

IP codes, dust and moisture protection 25

End-of-life behavior 25

Fortimo LED DLM system disposal 25

9. Schematicluminairewiththe

Fortimo LED DLM system 26

Page 3: OEM Design-in guide - futureelectronics.com LIGHTING... · Shape of heat sink 23 The Fortimo LED DLM with the two connected heat sinks and three thermo couples installed 23 How to

Design-in guide Philips Fortimo LED downlight module system 3

1. IntroductionThank you for choosing the Philips Fortimo LED DLM system.

This guide tells you all about this system. If you require any further information

or support please consult your Philips sales representative or visit:

www.philips.com/fortimo

TheadvantagesofLEDshavebeenknownfor40years:

•Longlife–lowmaintenancecost

•Robustness–highreliability

•Saturatedcolors–maximumvisualeffect

•Coolbeam–noheatingofilluminatedproducts

•NoUVorIR–wideapplicationpossibilities

•Low-voltageoperation–moresafety,easeofuse

•Mercury-free–carefortheenvironment

Rapidimprovementsinhigh-powerLEDtechnologymeanthatLEDscannowbeusedforthefirst

timein‘real’lightingapplications,providingimprovementsovertraditionallightingsystems.

UtilizingLEDtechnologyhasitschallenges,suchashowtodesignaroundconstantperformance

improvement,howtoengineerandprovideappropriateheatsinkingand/orhowtodealwith

variationsinflux/color.TheFortimoLEDDLMsystemaddressesthesedifferencesandfacilitates

easyadoptionofLEDtechnologyforhighlumenpackages(1000lumensplus).Thesystemis

designedforintegrationinluminaires.Thistechnicalapplicationguideaddressestherelevantissues

tosupportandfacilitatetheworkofspecifiersandlightingsystemdesigners.

TheFortimoLEDDLMsystemis,asthenamesuggests,designedandintendedfordownlight

luminaires.OtherapplicationscanbeexploredbyOEMsaslongasthiscreatesnodesignconflicts

withtheFortimoLEDDLMsystemandlocalstandards.Pleaseconsultusifyouwishtodeviate

fromthedesignrulesasdescribedinthisdesign-inguide.

ReferencethePhilipswebsiteforcomplimentaryheatsinkorreflectorproductinformation.

Page 4: OEM Design-in guide - futureelectronics.com LIGHTING... · Shape of heat sink 23 The Fortimo LED DLM with the two connected heat sinks and three thermo couples installed 23 How to

Design-in guide Philips Fortimo LED downlight module system4

Features and benefits

Features Benefits

Breakthrough LED L3 energy saving

Patentedremotephosphortechnology

Fortimodriver>85%efficiency

LED system suitable for functional lighting applications.

Efficient,easytomeetEnergyStardrivers

Superior-quality white LED light

1100&2000lmmodules

CRI=80,3000K,3500K,4000K

Remotephosphor

Optimizedlightmixingchamber

Dedicatedbinningstrategy

An enabler for entry into general lighting

CompeteswithCFLsystems

Meetsthenormsforgenerallighting

Veryhigh(optical)luminaireefficiencies

Perfectlymixedlight,consistentcolorqualityandlumenoutput

Future-proofed, convenient modules

Fixedformfactor

Fixedlumenpackage

Easy-to-mountheatsink/optics

Comfortablelight

NoheatorUV

Dimmable,instant100%light

EasytoworkwithforOEMs

Fewertechnicalbarriers

Fastertime-to-market

Easyfortheendusertoexperience

Morecomfortable,nodamagetomaterials

Multiplescene-settingoptions

Long lifetime of 50,000 hrs

Integratedlifetime-preservingmethod

Low-maintenance

Morereliable,longerlife

3000 K, 3500 K & 4000K Warmcoloroptionsavailabletoo

Fortimo DLM Driver Easeofinstallation

Dimmablevia0–10VProtocol Dimmingincreasesefficiencyupto30%

Applications

TheFortimoLEDDLMsystemisintendedforgenerallightingapplicationsintheprofessionalmarketfor

offices,hospitalityandretail.Examplesofapplicationsinclude:

•Offices(representativeareassuchasreceptions,boardrooms,etc.)

•Publicbuildings(cinemas,restaurants,theaters,airports,exhibitionhalls)

•High-endshops

•Retail(supermarkets,bakery/butcherareas,leathergoods,etc.)

* Use in outdoor luminaires?

Neither the Fortimo LED DLM module nor the LED driver has an IP classification.

If an OEM decides to use the Fortimo system in a luminaire for outdoor application, the OEM is responsible for

proper IP protection and approbation of the luminaire.

Page 5: OEM Design-in guide - futureelectronics.com LIGHTING... · Shape of heat sink 23 The Fortimo LED DLM with the two connected heat sinks and three thermo couples installed 23 How to

Design-in guide Philips Fortimo LED downlight module system 5

2. LEDs, the heart of the Fortimo downlight moduleThe development of Light Emitting Diodes (LEDs) is progressing at such a pace

that they are rapidly gaining importance for lighting applications. To most people,

the term LED still only means the small indicator lights that show whether the

TV set is switched on. These tiny light sources barely emit enough light to make

themselves visible. However, breakthroughs made in the last few years now allow

LEDs to be used for ‘real’ lighting applications that have traditionally been the

domain of incandescent lamps and discharge lamps. Philips Lumileds was the

first to bring high power LEDs for lighting applications to the market under the

Luxeon trademark. Luxeon emitters are among the highest-performance LEDs in

the world, allowing us to offer the brightest solid-state lighting solutions.

What is a LED?

LEDsaresolid-statedevices,builtupfromcrystallinelayersofsemiconductormaterial.Thelight

generationprocessmakesuseofthespecialelectronicpropertiesofcrystallinesemiconductors

inaprocesscalledinjectionluminescence.Inbrief,thismeanstheinjectionofchargedparticles

byanelectricfieldfromonesemiconductorlayerintoanother,wheretheyareabletorelaxto

alower-energystatebyemittingvisiblelight.LEDsproducenarrowlightspectra.Thebandwidth

remainslimitedtoafewtensofnanometers,andisthereforeperceivedbythehumaneyeas

asingle,deeplysaturatedcolor.LEDsarenowavailableinallwavelengthregionsofthevisible

spectrum;yellowistheonlyregioninwhichnohigh-powerLEDiscurrentlyavailable.White

lightcanbeproducedbycombiningLEDsofdifferentcolors(forinstancered,greenandblue),

orbyapplyingphosphorcoatingsonblueorultravioletLEDs.Likemanyotherlamps,LEDs

cannotbeconnecteddirectlytothemains.TheLEDshavetobeoperatedatastabilizedlow

voltage,whichisprovidedbydriverelectronics.However,LEDsdonotneedignitionandcanbe

switchedwithinmilliseconds.LEDsdonotgeneratenearlyasmuchheatasmanyotherlamps,

butthatdoesnotmeanthatthermaldesignisnotimportant.LEDsdoproduceheatwhenthey

operate,andarethemselvesrelativelysensitivetotemperature.Thermalconsiderationsare

thereforeveryimportantaspectsofLEDlightingsystemdesign.

LED packaging

ThebareLEDdieisstillaverysensitiveandfragiledevicethatmustbehandledinaclean

roomenvironment.Beforebringingthemoutside,theymustbepackaged.Thelightfluxof

conventionalLEDs,forexamplethoseusedasindicatorlightsonTVsets,isseverelylimited

bytheamountofheatgenerated.Inpractice,conventionalLEDpackagesarelimitedtoabout

0.15Watmost,andemitonlyafewlumens.Theirlightistooweaktobeusedforillumination

purposes,andtheycanonlybeusedforluminanceapplications(i.e.whenthelightsourceis

intendedtobevieweddirectly).Abreakthroughcamewithanewpackagedesigninvented

byPhilipsLumileds,whichguidesawaytheheatgeneratedatthediodejunctionmuchmore

efficiently.LEDsbasedonthispackagearesoldunderthetrademarkLuxeon.

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Design-in guide Philips Fortimo LED downlight module system6

Insteadofanepoxycap,thechipisencapsulatedinasiliconelens.Thispackagedesignnow

makeshigh-powerLEDsfeasible.

Binning

ThesubjectofbinningshouldbeexplainedbecauseofitsimportanceinLEDsystemdesign.

Asinothersemiconductormanufacturingprocesses,inLEDproductionthenumberof

parametersoftheepitaxyprocessisverylargeandtheprocesswindowsmall(forexample,

thetemperaturemustbecontrolledtowithin0.5°C(<1°F)acrossthewaferattemperatures

of~800°C/1470°F).Thedifficultyofachievingsuchahighdegreeofcontrolmeansthat

thepropertiesoftheLEDsmayvarysignificantlywithinsingleproductionrunsandevenon

thesamewafer.Toobtainconsistencyforagivenapplication,binning(=selectioninbins)is

mandatory.BinninginvolvescharacterizationoftheLEDsbymeasurementandsubsequently

categorizingthemintoseveralspecificbins.TokeepthecostperLEDdown,LEDmanufacturers

mustsellthefullproductiondistribution.Atthesametimetheycannotguaranteetheavailability

ofallbinsatalltimes.Thereisatrade-offbetweenlogisticsandcostpriceontheonehand,

andtheapplicationrequirementsontheother.Settingthespecificationtootightlywillincrease

thecostpriceandmayleadtologisticsproblems.Systemdesignshouldthereforetryto

combineLEDsfromdifferentbinsintelligentlytoobtaintherequiredsystemperformanceata

reasonablepriceandwithreasonabledeliveryreliability.

LUXEON Rebel LEDs

LUXEONRebelisthesmallestsurfacemountablepowerLEDavailabletoday.Withthe

industry’sbestlumensperpackage,highestlightdensity(lumenspermm2),andthehighest

packingdensity,LUXEONRebelisidealforbothspaceconstrainedandconventionalsolid

lightingapplications.Duetothesmallmountingsurfacewehavebeenabletousemultiple

LUXEONRebelwiththeFortimoproductsinordertomatchrequiredhighlumenpackages.

Fortimo LED DLM addresses the issue of binning

High-qualityLEDlightisachievedbymixingthelightofblueLEDsandapplyingaspecial

FortimophosphortechnologyremotefromtheLEDs.High-qualitywhitelightischaracterized

byacolorrenderingof80,popularCCTsingenerallightingapplicationsof3000K,3500K

and4000KandacolorconsistencycomparablewithconventionalCFLandHIDsolutions

(fiveSDCM).

LUXEO Rebel LED

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Design-in guide Philips Fortimo LED downlight module system 7

Color consistency (SDCM)

0.31

8

0.33

8

0.35

8

0.37

8

0.39

8

0.41

8

0.43

8

x

CIE 1931 xy

3500

3000

4000

5000

4500

0.434

0.414

0.394

0.374

0.354

0.334

0.314

y

6500

1000

075

00

Color consistency (SDCM)

ThetargetspecificationofFortimoLEDDLMsystemsforcolorconsistencyis5SDCM@0-hours

and6SDCM@10Khrs.ThisisasimilarspecificationasforconventionalCFLlamps.SDCMstands

forStandardDeviationofColorMatchingandthevalue5referstothesizeofanellipsearoundthe

blackbodylocus.Stayingwithinthisellipseresultsinaconsistencyoflightthatensuresthatfrom

oneluminairetoanothernodifferencecanbenoticed.Inthevisualwehaveplotted>3000Fortimo

LEDDLMsystemsandyoucanseetheyallfitwithinthe5SDCMellipse.Thisreallydemonstrates

theuniquequalityoftheremotephosphorconcept.Wealsoplottedtheseresultsinatypicalbin

distributionsheetofPhilipsLumileds.AsyoucanseeallFortimo’sfitwithin1colorbin!Typicallyyou

canbuy6to12binscombinations,notsopreciseasthe1-binresultofFortimo.

Miniaturization

LEDsaretypicallymuchsmallerthanconventionallightsources.Lightingdesignersandspecifiers

immediatelyrecognizedthefactthatLEDsallowdramaticallydifferentlightingdesignsthatcapitalize

onthesetiny,unobtrusivelightsources.Thisisunderstandable,butcaremustalsobetakentodeal

withtheheatproducedbypowerLEDs.Properheatmanagementplaceslimitsonminiaturization.

Fortimo LED DLM portfolio

TheFortimofamilyofproductshasbeenever-evolvingsinceit’sintroductionin2008.By

maintainingitssleekfootprint,OEMscanbenefitfromthesimplicityofit’seasy-to-use,

future-proofdesign.Theexistingportfolioisasfollows:

Fortimo LED DLM “4000 K”

9290098403FortimoLEDDLM110017W/840UL

9290098603FortimoLEDDLM200033W/840UL

Fortimo LED DLM “3500 K”

9290099603FortimoLEDDLM110018W/835UL

9290099703FortimoLEDDLM200034W/835UL

Fortimo LED DLM “3000 K”

9290098303FortimoLEDDLM110019W/830UL

9290098503FortimoLEDDLM200036W/830UL

Fortimo LED DLM cable

442240066181FortimoLEDDLMcable500mmw/ofan

442240068381FortimoLEDDLMcable500mmw/fan

442240072121FortimoLEDDLMcable840mmw/ofan

Fortimo LED DLM driver

913701213402FortimoLEDdriver(120-277V,0-10Vdim)

3. Philips Fortimo LED DLM system

Fortimo LED DLM system

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Design-in guide Philips Fortimo LED downlight module system8

The basic principles of the Fortimo LED DLM system

TheFortimoLEDDLMsystemisdesignedfordownlightapplicationsandcontainsthree

components:

•TheFortimoLEDDLM(downlightmodule)

•TheFortimoLEDDLMdimmabledriver

•TheFortimoLEDDLMcable

Allproductscanbeorderedseparately.

Starting characteristics

Thesystemcanbeswitchedoninmilliseconds,whichisageneralcharacteristicofLEDs.

Luminous flux during start period

Incontrasttootherlightsources,LEDscanbeswitchedonatfullpower(oratanyotherdimmed

level)instantaneously.TheFortimoLEDDLMsystemrequiresnoinitialburning-intime.

Lumen maintenance

Whenusedwithinspecification,(Tc<65ºC;Ta=35ºC)lumenmaintenanceof70%at35,000

hoursisexpectedforFortimoLEDDLM.At50,000hourslumenmaintenanceis50%(average

lifetimespecification).

Dimming

ToenabletheFortimoLEDDLMsystemtodim,aspecialFortimoLEDdriverhasbeendeveloped.

DuetotheuseofanAmplitudeModulation(AM)(notPWM)protocoltheefficiencyofthe

Fortimosystemwillincreaseupto30%whiledimming.

Future range extensions

Astechnologyquicklyadvances,theFortimofamilyisstillgrowing.Thefollowingproductsare

expectedsoon:

• FortimoLEDDLMupgradesthatimproveefficiencyandlowercost(dependingonthe

productproposition).

• Fortimowithemergencyfunctionality

• FortimoLEDDLMwitha3000lumenpackage

Fortimo LED DLM module

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Design-in guide Philips Fortimo LED downlight module system 9

Nomenclature

Thenamesoftheproductsaredefinedasfollows:

•FortimoLEDDLM110017W/840UL(CRIof80andCCTof4000K)

•FortimoLEDDLM200033W/840UL(CRIof80andCCTof4000K)

•FortimoLEDDLM200034W/835UL(CRIor80andCCTof3500K)

•FortimoLEDDLM110018W/835UL(CRIof80andCCTof3500K)

•FortimoLEDDLM110019W/830UL(CRIof80andCCTof3000K)

•FortimoLEDDLM200036W/830UL(CRIof80andCCTof3000K)

•FortimoLEDDLMcable

•FortimoLEDDLMdriver

About the Fortimo LED DLM (downlight module)

TheFortimoLEDDLMconsistsoffourmaincomponents:

1. PCBwithLEDs

2. Mixingchamber

3. Heatsink

4. Diffuserwithremotephosphortechnology

Dimensions of the Fortimo LED DLM module and driver system

(typicaldata;±0.2mm)

•Maximumcurrentsettingsof700mA

•Class2andisolatedoutput

•Maximum56Venablesclassification

•0-10VDimmableofthesystemasaULClass2powersupply

•Connectorized

•Highefficiency:85%atfullload

•SmallSize

•Tcaselife=75°C

B1A1

C1 C2

A3

Fortimo LED DLM module - dimensions

A1 A2 A3 B1 C1 C2

81.6 - 66.8 82.8 43.7 40.2

A1 B1 C1 D1 E1 F1 F2 F3 F4 G1

9.05" (230.0) 1.77" (45.0) 1.65" (42.0) 8.44" (214.5) 0.18" (4.5) 4.55" (116.6) 1.18" (30.0) 3.00" (76.4) 4.20" (106.7) 2.0" (50.8)

Dimensions in inches (mm).

Fortimo LLM module Fortimo LLM driver

FF4

F2

F3G

Fortimo LED DLM driver - dimensions

F1 F2 F3 F4 G1

116.6 30.0 76.4 106.7 50.8 Note:Dimensionsareinmillimeters(mm)

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Design-in guide Philips Fortimo LED downlight module system10

Fortimo LED DLM module, fixing holes and grooves

Fortimo LED driver

High-qualitywhitelightwithhighefficienciesisachievedwithaplainPCBwithLEDsandaremote

phosphorfilmlayer.Themixingchamberensuresperfectlymixedlight,resultinginuniform

colorsandgoodcolorconsistency.Thesquareheatsinkfacilitatesoptimalheattransferinthree

directionsandhelpsluminairemanufacturestodesigntheirownheatsinksystem.Theheatsinkis

equippedwithscrewholesforfixingtheheatsink.Besidesfacilitatinghighefficiencies,theremote

phosphortechnologymakesitrelativelyeasytodevelopvirtuallyanyfluorescentcolor.Thefirst

versionwillhavealightcolorof3000K,3500Kand4000K.Thefunctionofthediffuseristo

shapethelightdistribution,resultinginaLambertianbeam.Theluminairemanufacturerhasthe

freedomtodesignitsownsecondaryoptics.TheLEDmoduleintegrateseasymountingoptions

forsecondaryoptics.TheoveralldimensionsoftheLEDmodule,i.e.thecombinationofheatsink

andmixingchamber,areoptimizedforlumenpackagesvaryingfrom1000lumento2000lumen.

Mechanical fixation

TheFortimoLEDDLMhasscrewholes(M4threadedheadsizelessthan7mm)atthebottom

andsidesoftheheatsinkforfixingtheheatsink.AsanalternativetoscrewstheFortimoLED

DLMalsohasgroovesatthesideofthemodulesothataheatsinkcanbeclickedin.2Dor3D

CADdrawingsareavailableonthePhilipswebsite.

About the Fortimo LED DLM driver

ThehighlyefficientFortimoLEDdriverisspeciallydesignedtooperatetheFortimoLEDDLM

module.Itisdesignedtooperatehigh-powerLEDs.TherearespecificversionsforEurope(220-

240V)andNorthAmerica(120-277V)*becauseofdifferenthousingrequirements.

TherearemeanwhilevariousFortimoLEDdrivers:

•Fixedoutput;build-inforEurope*(220-240V)andNorthAmerica(120-277V)

SpecialfeaturesforthisIntellivolt®dimmabledriverare:

•maximumcurrentsettingsof700mA

•max.56VenablesoperationofmanyLEDsinseries

•Tcase=65ºC

•SafetyClass2system

* A separate design-in guide is available for the European Fortimo DLM system.

About the Fortimo LED DLM cables

Standard500mmand840mmcableswithoutfanand500mmcablewithfancanbeordered.

Fortimo LED DLM cable

1Black Led+

2 Yellow Led-

3— Blank

4 Gray SignalGND/Fan(-)

5 Blue LEDmodulesetting

6 Red NTC(thermalcontrol)

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Design-in guide Philips Fortimo LED downlight module system 11

4. System performance specifications

Fortimo LED DLM

System (driver and

module)

Module

12NC

Driver

12 NC

Cable 12NC Vin

(V)

Nom

P

(W)

Nom

pf

Nom

THD

(%)

Nom

Flux

Nom

Fortimo LED DLM1100

19W/830UL

929000498303 913701213402 442240066181 120-277V 19 >0.9 <20 1100

Fortimo LED DLM1100

18W/835UL

929000499603 913701213402 442240066181 120-277V 18 >0.9 <20 1100

Fortimo LED DLM1100

17W/840UL

929000498403 913701213402 442240066181 120-277V 17 >0.9 <20 1100

Fortimo LED DLM2000

36W/830UL

929000495003 913701213402 442240066181 120-277V 36 >0.9 <20 2000

Fortimo LED DLM2000

34W/835UL

929000499703 913701213402 442240066181 120-277V 34 >0.9 <20 2000

Fortimo LED DLM2000

33W/840UL

929000498603 913701213402 442240066181 120-277V 33 >0.9 <20 2000

Fortimo LED DLM

System (driver and

module)

Eff.

(lm/W)

B50L70 @ TC

55C of Module

B50L70 @ TC

65C of Module

Tamb

(ºC)

Tcase Module

(ºC)

Tcase Driver

(ºC)

Nom Nom Nom Nom typ max typ max

Fortimo LED DLM1100

19W/830UL

58 50Khrs 35Khrs (-20)to35 55 65 75 85

Fortimo LED DLM1100

18W/835UL

61 50Khrs 35Khrs (-20)to35 55) 65 75 85

Fortimo LED DLM1100

17W/840UL

64 50Khrs 35Khrs (-20)to35 55) 65 75 85

Fortimo LED DLM2000

36W/830UL

55 50Khrs 35Khrs (-20)to35 55 65 75 85

Fortimo LED DLM2000

34W/835UL

58 50Khrs 35Khrs (-20)to35 55 65 75 85

Fortimo LED DLM2000

33W/840UL

61 50Khrs 35Khrs (-20)to35 55 65 75 85

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Design-in guide Philips Fortimo LED downlight module system12

5. Lighting performance characteristics

Specification of the system after 100 hours

Fortimo LED DLM

System (driver and

module)

Light

output

lm

Color

temperature

K

Color

rendering

index

Ra

Color

consistency

initial and at

10K hrs

SDCM

Fortimo LED DLM1100

19W/830UL

1,100 3,000 80 5/6

Fortimo LED DLM1100

18W/835UL

1,100 3,500 80 5/6

Fortimo LED DLM1100

17W/840UL

1,100 4,000 80 5/6

Fortimo LED DLM2000

36W/830UL

2,000 3,000 80 5/6

Fortimo LED DLM2000

34W/835UL

2,000 3,500 80 5/6

Fortimo LED DLM2000

33W/840UL

2,000 4,000 80 5/6

UV and other hazards

PETvalue >100hrs./Klux(zeroUV)

Damagefactor 0.08@4100K

IR(infrared)radiation AswellasbeingfreeofUVradiation,

theLEDmodulesarealsofreeofinfraredradiationinthebeam.

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Design-in guide Philips Fortimo LED downlight module system 13

Spectral Power Distribution 3000K, 3500K and 4000K

Dimming characteristics

FortimoDrivermakesuseofaso-calledamplitude(AM)dimmingprotocol.MostLEDsystems

workwithPWM(pulsewidthmodulation)wherethecurrentiscutinpartsanddimminglevels

areachievedbycombining,onhighfrequency,on/offsettings(pulses).AMdimmingreducesthe

currentthroughtheLEDstoachievelowerlightlevels.Atlowercurrents,LEDsoperatemore

efficiently(FigureA).Inadditiontothis,otheradvantagesofAMdimmingare:

•Noaudiblenoiseduringdimming

•Novisualinterferencewithotherlightingorvideosources

•Improvementofoverallperformance

700 mA

100% lightlevel

LED

Cur

rent

700 mA

50% lightlevel

AM Dimming

LED

Cur

rent

700 mA

50% lightlevel

PWM Dimming

LED

Cur

rent

0

0.005

0.01

0.015

0.02

0.025

0.03

0.035

0.04

380 430 480 530 580 630 680 730 780

Intensity(W/n

m)

Wavelength(nm)

34e5t6al478e69ist6i:;<7n=76<m7>?@@>ABCDDE

0

0.005

0.01

0.015

0.02

0.025

0.03

0.035

0.04

0.045

380 430 480 530 580 630 680 730 780

Intensity(W/n

m)

Wavelength(nm)

34e5t6al478e69ist6i:;<7n=76<m7>?@@>ABCCCD

0

0.005

0.01

0.015

0.02

0.025

0.03

0.035

0.04

380 430 480 530 580 630 680 730 780

Intensity(W/n

m)

Wavelength(nm)

34e5t6al478e69ist6i:;<7n=76<m7>?@@>ABCCCD

Figure A

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Design-in guide Philips Fortimo LED downlight module system14

6. Designing a luminaireInthischapterrecommendationsandvaluesaregiventoenableoptimalluminairedesign.

U.L. recommendations

ThegeneralrecommendationsforluminairedesigngivenbytheU.L.1598andU.L.8750arealso

applicabletoLED-basedluminaires.

Electrostatic device (ESD) measures

FortimoLEDDLMsystemsdonotrequirespecialESDmeasuresinaproductionenvironment.

Installation instructions

FortimoLEDDLMsystemsarebuild-insystemsforintegrationintoluminaires.

Thereareinterfacesfor:

•CablingbetweenLEDmodule,driverandluminaire

•SecondaryopticsviamountingoptionsintheLEDmodulehousingandreflectorrim

•Heatsinkdesign

Wiring

Connecting to the mains supply

Themainssupplyhastobeconnectedtothepowersupply(L&Ncanbeswitched).

Connecting to protective ground

TheFortimoLEDdriverneedstobeconnectedtoprotectivegroundforreasonsofcompliance

withsafetyregulationsandEMI.

Connecting to 12 V

TheFortimoLEDDLMversionincludesalsoa12Voutputthatcanbeusedforvarious

options,like:

•ActivecoolingofNuventixSynJet(Universal)DLMCoolers

•Other12Voperatingfans

•NotethatwhentheLEDcurrentis<200mA,duetodimming,the12Voutputisswitchedoff

Connecting a Fortimo LED driver to a Fortimo LED module

AspecificcablehasbeendevelopedtoconnecttheFortimoLEDmoduleandtheLEDdriver;

theFortimoLEDDLMcable.This500mmcablecanbeorderedseparatelytotheFortimoLED

DLM systems.

Label Fortimo LED DLM module

Fortimo LED DLM cable

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Design-in guide Philips Fortimo LED downlight module system 15

Fortimo LED DLM cable

WeadviseusingtheFortimoLEDDLMcable.HoweverifanOEMpreferstohaveacable

withadifferentlengthithastoorganizethisitself.ThecablespecificationshouldmeetUL

requirements.However,approvaloftheFortimoLEDDLMmoduleandLEDdriverisbased

onareferenceluminairewiththestandardcablelengthof600mm.Inanycase,anyluminaire

designneedsitsownapproval,organizedbytheresponsibleOEM,irrespectiveofthelengthof

cableused.

IfanOEMpreferstohaveacablewithadifferentlengthitcanusethefollowingcable/

connectorspecifications:

JSTconnectoratcabletoLEDmodule:

-housingJSTPAP-06V-S

-contactJSTSPHD-001T-P0.5

FerruleconnectoratcabletoLEDdriver:

-Wagosireferrule-216-201

-WagoTwowireferrule-51018076

Outdoor luminaires

NeithertheFortimoLEDDLMmodulenortheLEDdriverhasanIPclassification.IfanOEM

decidestousetheFortimosysteminaluminaireforoutdoorapplication,itisresponsiblefor

properIPprotectionandapprovaloftheluminaire.

Secondary optics

TheFortimoLEDDLMmodulegeneratesaLambertianbeamshapewhichisapragmatic

startingpointforsecondaryopticdesignbyOEMs.Ray-setfilesareavailableuponrequest.

Thesecondaryopticdesignshouldnotcovertheexitaperture.

Itisnotrecommendedtoputasecondaryoptics(ie.alensorafilter)within70mmof

theFortimolightexitwindow.Whentheproductisinstalledaccordingtoguidelines,the

temperatureofthelightexitwindowwillbebelow105°C.Whenthecustomerdecidesto

placesecondaryopticswithin70mmofthelightexitwindow,thecustomershouldtakecare

thatthetemperatureofthematerialwillnotexceed105°Cforperformanceand115°Cfor

safety.ThetemperatureofthelightexitwindowcanbemeasuredwithInfraredtemperature

sensingtechnique.

Polar intensity diagram

OntopoftheFortimoLEDDLMtherearemounting

options(rimofdiffuserandthreemountingholes)for

positioningsecondaryoptics.

Position of secundary optics

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Design-in guide Philips Fortimo LED downlight module system16

General

ForoptimumperformancetheFortimoLEDDLMsystemmustoperatewithinspecified

temperaturelimits.

Test requirements

TheFortimoLEDDLMsystemshavenospecificmeasurementforminimumambient

temperature,whichmaybeaslowas-20ºC.ThisminimumlimitisdeterminedbytheFortimo

LEDdriver.Temperaturemeasurementsshouldonlybeperformedwhentheluminaireis

thermallystable,whichmaytake0.5to2hoursdependingonthethermalcapacityofthe

luminaire.Forallmeasurementssuchastemperature,luminousfluxandpower,astabilization

periodofatleasthalfanhourmustbeallowedbeforeanyreliabledatacanbeobtained.

Measurementsmustbeperformedbymeansofthermocouplesthatarefirmlygluedtothe

surface(andnot,forexample,securedwithadhesivetape).

Maximum temperature

BecauseLEDsaretemperature-sensitive,LEDmodulesrequireadifferentapproachwith

respecttothemaximumpermissiblecomponenttemperature.Thisisdifferenttomostother

typesoflightsources.

Critical measurement points

ForLEDs,thejunctiontemperatureisthecriticalfactorforoperation.Sincethereisadirect

relationbetweenthecasetemperatureandtheLEDjunctiontemperature,itissufficientto

measurethealuminumcasingoftheLEDmoduleatitscriticalpoint.Thecriticalpointisonthe

backsurfaceoftheLEDmodule.Ifthecasetemperature(Tc)atthecriticalmeasurementpoint

istoohigh(exceedingtherecommendedmaximumtemperature),theperformanceoftheLEDs

willbeadverselyaffected,forexampleintermsoflightoutput,lifetimeorlumenmaintenance.

Operation under built-in conditions

TheheatproducedbytheLEDdriverandLEDmoduleintheluminaire(orsimilarhousing)

mustbedissipatedtothesurroundings.Ifaluminaireisphysicallyinsulatedbyaceiling,wallor

insulationblanket,theheatproducedcannoteasilybedissipated.Thiswillresultinheatingof

theLEDdriverandtheLEDmoduleintheluminaire,whichinturncanhaveanadverseeffect

onsystemperformanceandlifetime.Foroptimumperformanceandlifetime,itisimportantthat:

• Aircanflowfreelyaroundtheluminaire

• Airflowthroughtheluminaireandaroundthemodules,musthaveapositiveeffecton

temperaturecontrolandhenceonperformanceandlifetime.

7. Heat sink design and temperature measurements

Temperature test point TC

Tc Ø1cm

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Design-in guide Philips Fortimo LED downlight module system 17

Case temperature and thermal circuit

ToensuretheperformanceoftheFortimoLEDDLMsystem,wehavedefinedaTcattheback

surfaceoftheLEDmoduleof65ºC.Atthatcasetemperaturethejunctiontemperatureofthe

LEDsisassuredandtheindicatedperformances(lifetime,lightoutput,lumenmaintenance)can

berealized.AboveaTcof65ºC,athermalcircuitwillbeengaged.ThiscircuitwilldimtheLED

module.Thegraphsbelowdisplaythetypicalcasetemperatureandrelativefluxasafunction

ofambienttemperature,foracalculatedheatsinkperformanceof1K/W.TheFortimoLED

driveralsohasaTcof65ºC.

Theabove-mentionedengagementofthethermalcircuitatTc=65ºCisapplicabletoboth

the1100andthe2000lumenversions.Theperformancesoflightoutput,lightmaintenanceand

lifetimearerelatedtotheTcvalue.

Case temperature and LED module performance

TheFortimoLEDmodulecomesintwoversions,whicharenominallydesignedforacase

temperatureof65°C/149°F.Thefluxisthen100%.Thegraphsbelowshowtherelativelight

output(flux)asa%ofthenominalcasetemperature.Asyoucansee,iftheoperatingconditionof

theFortimoLEDmoduleislowerthantheTcpoint,performancewillincrease.

Operation in free air

TheFortimoLEDDLMisnotdesignedforoperationinfreeair.InsteadFortimoLEDDLMisa

build-inconceptforintegrationintoluminaires.

60% 30 35 40 45 50 55 60 65 70

Tcase (ºC)

Rela

tive

ux

(%)

70%

80%

90%

100%

110%

75 80

Temperatures Fortimo LED DLM2000

30 30 35 40 45 50 55 60 65 70

Ambient temperature (ºC)

Tcas

e (º

C)

75 80

35

40

45

50

55

60

65

70

Ambient temperature (ºC)

60% 30 35 40 45 50 55 60 65 70

Rela

tive

ux

(%)

70%

80%

90%

100%

110%

75 80

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Design-in guide Philips Fortimo LED downlight module system18

Heat sink design

Toensurethathousingtemperaturesdonotexceedthespecifiedmaximumvalues,aluminaire

canactasanadditionalheatsink.Theapplicableheattransportmechanismsareconduction

viatheheatsink,convectionandthermalradiationtothesurroundings.Theobjectiveofthis

chapterisnottoindicateexactlyhowtocalculateaheatsink,buttogivesomeguidelines

onhowtoimproveitsperformance.Althoughaheatsinkcanhavemany(complex)shapes,

thefollowingdiscussionisbasedonadisktypeofheatsink.Theresultsforsquareplates,

etc.,aremoreorlessthesameprovidedthesurfaceareasareequal.Thetypeofmaterial

usedhasarelativelylargeinfluenceonthefinalresult.Forexample,acomparisonofthe

thermalconductivity(k)ofcopperwiththatofcorrosion-resistantsteel(below)showsthata

substantiallysmallerheatsinkcanbemadewithcopper.Inpractice,thebestmaterialforheat

sinksis(soft)aluminum.

Thethickness(d)oftheheatsinkdiskisalsoofmajorimportance.Assumingtheuseofdifferent

heatsinksofthesamediameterbutmadefromdifferentmaterials,thesameeffectinterms

oftemperaturedifferencewillbeachievediftheproductofthermalconductivity(k)anddisk

thickness(d)isconstant.Thismeansmoreorlessthesameresultisobtainedwithadiskof

1mmcopper,2mmaluminum,4mmbrass,8mmsteelor26mmcorrosion-resistantsteel.

Increasingthediameter,andtherebyalsothesurfacearea,oftheheatsinkdiskalsoleadsto

animprovement,buttheeffectissmallerforlargerdiametersanddependsonthethermal

conductivity(k)ofthematerialandthethickness(d).

Thermalradiationcanalsoformasubstantialpartofthetotalheattransfer,andisofthesame

orderasforconvection.Thisdependsstronglyontheemissioncoefficient(seetable)ofthe

surface,whichliesbetween0and1.Forexample,apolishedaluminumsurfacehasaverylow

emissioncoefficient,whilethatofapaintedsurfaceisveryhigh.

Material W/mK

Copper 400

Aluminum 200

Brass 100

Steel 50

Corrosion-resistantsteel 15

Material W/mK Emission coefficient

Aluminium new/polished 0.04-0.06

oxidized 0.2-0.3

anodized 0.8

Steel painted 0.8-0.95

new/polished 0.03-0.07

heavilyoxidized 0.7-0.8

Thermal conductivity

Emission coefficients

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Design-in guide Philips Fortimo LED downlight module system 19

Size of heat sink

ThefirstgenerationFortimoLEDDLMproductsconsume18Wor45Wandcontainabuilt-in

heatsink.Deductingthedriverefficiencyandtheenergythatiseffectivelygivinglightleavesa

heatdissipationof15Wand38W,respectively,thatneedstobetakenawayfromthemodule.

Thesinkatthesidesandbackofthemoduleisthecontactareafortheexternalheatsink.The

heatsinktransportstheheatawayfromthemoduleandisconnectedtotheheatsink,with

eithertheuseofthepre-madescrewholesorsidegrooves.

Theperformance(lifetimeandamountoflight)ofthemoduledependsheavilyonthethermal

management.Thereforethetemperatureofthetestpoint(Tc)isimportant.Duringthethermal

designprocess,theaimistokeeptheTctemperaturebelowthestatedmaximum(65°C).

AlthoughtheFortimoLEDmodulewillnotfailduetoahighertemperature,theeffectof

insufficientcoolingwillmeanthatthelightoutputoftheLEDsisautomaticallydimmed(seealso

page21.)Sothebetterthethermalmanagement(lowTcoftheLEDmodule),thebetterthe

performanceoftheluminaire(lifetimeandlightoutput).Hereisadifferentiationopportunityfor

luminairemanufacturers.

Active and passive cooling

Therearetwothermalcoolingoptions,passiveandactivecooling.

Passive coolingsystemsaremadesothathotairmovesupwards,andanairflowiscreated

alongthesurfaces.Thisiscallednaturalconvection.

Active cooling systemshaveairflowthatisforcedwithafanorSynJet,whichenhancesthe

thermalcapacityoftheheatsink.Asaresult,asmallerheatsinkcanbeusedandorientation

oftheheatsinkisnoissueanymore.Negativeaspectsofactivecoolingisthepossibilityof

additionalnoisecausedbyafan,aswellasincrementalenergyconsumption.Notethatthe

OEMneedstoengineeracoolingsolutionthatmatchestheentiresystem’slifetimeand

intendedapplication.

Therearemanystandardheatsinksavailablewhicharerelativelycosteffective.Whencomparing

activecooling,theformfactorofthetotalsystemisapproximatelytwotimeslarger.

Passive cooling

Therearetwopassivethermalsolutions.

AsshownontheleftsidesofFigureAandB,thesolutionwiththeheatsinksconnectedtothe

sidesofthemodulehastheadvantageoflowerheight,butalargerdiameter.Thedisadvantage

isanextrathermalresistancepathfromtestpointTc(inthecenteroftherearsurface)tothe

sideswheretheheatsinksareconnected.

AsshownontherightsidesofFigureAandB,theheatsinkisconnectedtothebacksideof

module.Thisconfigurationprovidesnoextrathermalresistance,thoughtoachievethissame

coolingcapacity,extraheightisrequired.

Tc Ø1cm

Temperature test point Tc

Passive solution directions Fortimo LED DLM1100

Passive cooling example for Fortimo LED DLM2000

Figure A

Figure B

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Design-in guide Philips Fortimo LED downlight module system20

FortheFortimoLEDDLM1100,thesizeoftherequiredheatsinkissmaller.Thisalldependson

theapplication,butgenerally,theFortimoLEDDLM1100requiresasmallerheatsink.

Air flow

Beforestartingwithanycalculation,animportantpointtoconsideristheairflow.

Ingeneral,hotairismovingupwardswithrelativelylowspeed.Theformandpositionofthe

heatsinkisinfluencingtheairlow.Inthepictureontheleft,thethefinsareperpendiculartothe

airflowwhichreducestheefficiencyoftheheatsink.Thissituationshouldbeavoided.

Abetterwaytopositionthefinsisindicatedinthepictureontheright,wherethefinsare

paralleltotheairflowdirection.Closingthetopoftheprofilewillreducetheeffectivelyofthe

heatsinkaswell,andshouldbeavoidedduringdesignandinstallation.

Thermal design

Therearetwomainthermalpathstoconsider—fromthetemperaturetestpointtotheside

surfacesandfromtheheatsinktotheambienttemperature(warmingupanddynamicbehavior

arenotdiscussedhere,asastaticsituationisnormallyfoundinlightingapplications).

From the temperature test point Tc (point 1) to the side surfaces (point 2)

•ThisisalreadymeasuredbyPhilipsandis0.2K/W.Pleasenotethatifyouattachtheheatsink

directlytothebackofthemodule,the0.2K/Wshouldbeconsidered.

From the heat sink to ambient (point 3)

Thethermalresistanceofaheatsinkisnormallygiveninadatasheet,butitisbasedona

fewassumptions:

•Acertainthermalpowerhastobeapplied,astheefficiencyoftheheatsinkislowerat

lowenergylevels

•Thetemperatureofthebacksideoftheheatsinkishomogeneous

•Anairflowcanfreelyflowoverthesurfaces

Thermal path basic solutions

1

2

3 3

2

Temperatures:

1=testpointTc2=heatsink@

Fortimo LED DLM side

3=ambient

ThermalResistances:

R1=FortimoLEDDLMpath1-2

R2=heatsinkpath3-4

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Design-in guide Philips Fortimo LED downlight module system 21

Thermal model

StandardSTATICthermalsituationscanbemodeledwithso-calledthermalresistances.These

resistancesbehavelikeelectricalresistors.Belowtheanalogybetweenelectricalandthermal

resistorsisexplained.Electricalunitsareshownontheleft,withthermalequivalentsshownon

theright.

Withaknownvoltagedifferenceatacertaincurrent,itispossibletocalculateanelectrical

resistorwithOhm’slaw.Thesameispossiblewithathermalresistor.Ifthetemperature

differenceisknownaswellasthethermalpower,thethermalresistancecanbecalculatedwith

thermalOhm’slaw.

Inthefiguresbelowyouseethetwomostimportantthermalresistances.Thefollowingare

somenotableconditions:

•FromtestpointTctosidesurfaceoftheFortimoLEDDLM,wheretheheatsinks

areconnected

•FromsidesurfaceofFortimoLEDDLMtoambient.Aswehaveconnectedtwoheatsinks,

bothwillhaveasimilarthermalresistanceinparallel

•InthespecificationthemaximumTcisgiven,incaseofaFortimoLEDDLM2000system

thisis65°C

Electrical and thermal analogy

Electrical:

V=voltagedifference[V]

I=current[A]

R=resistance[Ω]

Ohm’slaw:

V=I*R

Thermal:

T =temperature

difference[ºC]

Pth=thermalpower[W]

R =thermalresistance[K/W]

or [ºC/W]

ThermalOhm’slaw:T=Pth *Rth

V1

I

T1

Pth

V2 T2

Thermal resistance of Fortimo LED DLM

1

3

3

3

21

1

2

2

Sideview

Topview

Tc

Ths

Tamb

0.2K/W

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Design-in guide Philips Fortimo LED downlight module system22

Calculating your heat sink

Westartwith3thermalcalculationformulas:

•Formula1(f1)istherelationbetweentemperaturedifference,thermalpowerandthermal

resistance.Withthisformula,theneededthermalresistancecanbecalculatedwhenthethermal

powerandtemperaturedifferenceareknown.

•Formula2(f2)showshowtocalculatethereplacementoftwoparallelresistors,with

oneequivalent.

•Formula3(f3)showsthereplacementequivalentof2resistorsinseries,simplyaddthevalues.

Nextwegatherallavailableinformation,ascanbefoundinthedatasheet,applicationdetailsand

designchoices.

From the datasheet:

Maximumtestpointtemperature: Tc-max=65°C

ThermalpowerFortimoLEDDLM2000: Pth=20W

ThermalresistancefromTctosidesurface: Rth-Tc-to-side-surface=0.2K/W

Maximumtemperatureinapplication: Tambient-max=35°Cchoseninthiscase.

Inthiscaseweinstalltheproductbelow

ceiling,whichistheambienttemperature

oftheproduct.

Themaximumtemperaturediffersperapplicationandcanbelowerorhigher,thanthenow

chosen35°C.

Belowwecalculatetheneededthermalresistanceoftheheatsink,sothatinworstcasescenarios,

themaximumtemperatureofthetestpointTcisbelowitsmaximum.

Thermal resistance of heat sink

Fortimo LED DLM

Thermal resistance of heat sink 2/3

Rth

c-h

s

Rth

hs-a

mb

Rth

hs-a

mb

Tc

Ths

Tambient

0.2

K/W

2 x

1.1

K/W

1. Calculation of total maximum thermal resistance: (f1)

ΔTambient – Tc = 65 – 35 = 30 °C

Rth Tc – ambient = (Tambient – Tc)/ Pth= 30 / 20 = 1.5 K/W

2. Calculation of thermal resistance two heat sinks: (f3)

Rth hs – ambient = Rth Tc-hs + Rth hs – ambient

Rth hs – ambient = 1.5 – 0.2 = 1.3 K/W

3. Calculation of thermal resistance per identical heat sink: (f2)

R1 = R2 and Rtot-hs-amb = 1/(1/R1 + 1/R2)

Rtot = 1/ (2/R1) = R1/2 <> R1=2Rtot

R1 = Rth single heat sink = 2 * 1.3 = 2.6 K/W

Thermal resistance of heat sink

Fortimo LED DLM

Thermal resistance of heat sink 1/3

Rth

c-h

s

Rth

hs-a

mb

Rth

hs-a

mb

Tc

Ths

Tamb

Available information:

Tc-max = 65°C

Pth-Fortimo2000 = 20 W (2000Lm, 3000K)

Rth-Tc-to-hs = 0.2 K/W

Tambient-max = 35°C

To be calculated:

Rth both heat sinks

0.2 K/W

Formulas:

1

2

3

f1

f2

f3

Thermal:

Parallel:

Series:

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Design-in guide Philips Fortimo LED downlight module system 23

Measurements

Nowweknowthethermalresistanceoftheneededheatsink.Thisheatsinkdimensionissuch

thatatmaximumpowerandmaximumambienttemperature,thetemperatureofthetestpoint

Tcisatorbelowitsmaximumof65°C.Thisistheworstcasescenario,whichmeansthat

normallythetestpointtemperatureTcislower.Thisassureslifetimeandlightoutputwillbe

accordingtospecifications.

Shape of heat sink

Whenlookingintoheatsinksuppliers,rememberthattheshapeisdeterminingthethermal

resistanceoftheheatsink.Inthiscase,thelengthisadesignparameter.

Thegraphatleft,showsthethermalresistanceoftheheatsink,withincreasinglength.

Withtheparametersprovidedinthisexample,weneeda2.6K/Wheatsinkandtheredline

indicatesthatthisprofilehasthestatedvaluewithalengthofapprox.90mm.

Therearemanyvariationsinfinnumber,lengthoffins,lengthofheatsinkandsoon.With

specialthermaldesignsoftware,atailor-madesolutioncanbefoundaswell.

Withtheuseofastandardthermocouple,allimportanttemperaturescanbemeasuredand

comparedtotheoreticalvalues.

On the left you see the standard set-up for thermal testing of the Fortimo LED

DLM system which includes two connected heat sinks and three thermocouples.

Keythermocoupletestpointsare:

•AttestpointTc

•AttheheatsinkinterfaceoftheFortimoLEDDLMmodule

•Attheambienttemperatureinsituation

Withthissimpleset-up,allimportantvaluescanbemeasuredandcomparedtothetheoretical

values.It’simportanttoassuregoodthermalcontactbetweenFortimoLEDDLMandtheheat

sinks.Werecommendusingthermalpadsorthermalpaste.Furthermore,itisveryimportant

thatthereisnomovingairintheroom.Thiswillinfluencethemeasurementheavily.

How to measure Tc

IncaseyouhavenodirectoreasyaccesstoconnectathermocoupletothedefinedTcpoint,

werecommendconnectingthethermocoupletooneofthesidesoftheFortimoLEDDLM.

TheheatsinkthatisintegratedintheFortimoLEDDLMmoduleensuresthattemperature

differenceforTcpointtobothsidesisminimal.Inthevisualontheleft,youseethisdifference

isapproximately8degreeswithaFortimoLEDDLMof2000lumens.Ifaheatsinkisconnected

tothebackofthemodule,thistemperaturedifferencewillreduceto4degrees.

Heat flow = 38.25 WConductivity Aluminium = 180 W/mKHeat transfer via both side walls

Temperature ºCMax: 6..538e+001Min: 5.726e+0012008/8/28 17:31

65.382

64.479

63.576

62.673

61.770

60.868

59.965

59.062

58.159

57.256

57.344

58.1

59.5265.02

Thermal resistance of heat sink

Fortimo LED DLM

Thermal resistance of heat sink 3/3

Example of standard heat sink: •  Needed 2.6 K/W •  Heat sink: Marston 28DN •  Length @ 2.6 K/W = 90 mm (red line)

•  Width= 97 mm height= 25 mm, #fins= 10 Rth= 2.6 K/W per heat sink (data sheet)

Fortimo LED DLM

Thermal resistance of heat sink 3/3

Example of standard heat sink: •  Needed 2.6 K/W •  Heat sink: Marston 28DN •  Length @ 2.6 K/W = 90 mm (red line)

•  Width= 97 mm height= 25 mm, #fins= 10 Rth= 2.6 K/W per heat sink (data sheet)

Fortimo LED DLM

Thermal resistance of heat sink 3/3

Example of standard heat sink: •  Needed 2.6 K/W •  Heat sink: Marston 28DN •  Length @ 2.6 K/W = 90 mm (red line)

•  Width= 97 mm height= 25 mm, #fins= 10 Rth= 2.6 K/W per heat sink (data sheet)

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Design-in guide Philips Fortimo LED downlight module system24

SynJet cooling from Nuventix

NuventixhasdevelopedacoolingsolutionutilizingSynJettechnologythatofferssilent

operation,longlifeandrobustcoolingforFortimoLEDDLMsystems.Itssmallsizeallowsitto

beusedintightspaces.SynJetcoolingallowsforuniversalmounting,permittinggreatflexibility

ininstallation.Theunitisdesignedforusewith1100and2000lumenFortimoLEDDLMs,

providinglong-termthermalsolutionsforLEDlighting.

Nuventixoffersthesestandardversions:

•SynJetDLMCoolerwithheatsink(round)

•SynJetUniversalDLMCoolerwithheatsink(square)

Designandassemblyguidesareavailableforbothproductsbyrequest.

Nuventix contact information

Forfullspecificationandapplicationassistance,pleasecontactNuventixdirectly:

JeffKelley,VPSales,Americas

E-mail:[email protected]

512. 382. 8116 or 512. 422. 4391

4635BostonLane

Austin,TX78735

www.nuventix.com

Belowaresomeadditionalreferencesforotherfansuppliers:

Emb Papst,website:http://www.ebmpapst.com/de/

EmbPapstisahigh-end,German-basedfansupplier.Theycoverabroadapplicationrange

(includingautomotiveapplications)andhavealotofexperienceinfanapplicationsforharsh

environments.

Sunon,website:http://www.sunon.com/index.htm

SunonisalargeTaiwan-basedfansupplier,mainlyactiveinelectronicscooling.TheirMaglev

technologyusesamagneticfieldtostabilizethefan,resultinginlonglifeandlownoise.

FurtherwewouldliketomentiontwoTaiwanesesuppliersofcoolingassemblies

(combinationsoffan+heatsink):

AVC:website:http://www.avc.com.tw/

CoolerMaster:website:http://www.coolermaster.com/

BothsuppliersareactiveinPCcoolingsolutionsandarestartingabusinessforLEDsolutions

aswell.PleasechecktheFortimowebpage(www.philips.com/fortimo)forthelatestinfoonour

complementarypartners.

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Design-in guide Philips Fortimo LED downlight module system 25

Electromagnetic compatibility

Electromagneticcompatibility,EMC,istheabilityofadeviceorsystemtooperatesatisfactorily

initselectromagneticenvironmentwithoutcausingunacceptableinterferenceinpractical

situations.PhilipsFortimoLEDDLMsystemsenableaFFCPart15ClassALuminaire.

Humidity

FortimoLEDDLMmodulesandLEDdrivershavenoIPclassification.TheOEMisresponsible

forproperIPclassificationandapprobationoftheluminaire.

Exposure to direct sunlight

ExposuretodirectsunlightduringoperationmayhaveseveretemperatureorUVeffects.Where

thissituationislikely,extensivetemperaturetestingisrecommended.

Vibration and shocks

Shockresistance:50g@6mssemi-sinusoidal.

Vibrationresistance:sweep50-150Hz,onehouratresonancefrequency(all3axes)withoutfailure.

Standards and approvals

PhilipsFortimoLEDDLMsystemscomplywiththefollowinginternationalrulesandregulations:

ElectricalClassification ULClass2

Approvals UL8750,CSAC22.2No.250.0

IP codes, dust and moisture protection

PhilipsFortimoLEDDLMsystemsarebuild-insystemsandhavethereforenoIPrating.

End-of-life behavior

Unliketypicalconventionallightsources,LEDsarenotsubjecttosuddenfailureorburnout.There

isnotimeatwhichthelightsourcewillceasetofunction.Instead,theperformanceofLEDsshows

gradualdegradationovertime.Whenusedaccordingtospecification,FortimoLEDDLMmodules

arepredictedtodeliveranaverageof70%oftheirinitialintensityafter35,000hoursofoperation

atTc65ºCand50,000hoursofoperationatTc55ºC.Thelifeofthesystemisthereforemore

dependentontheotherelectronicsystemcomponentsandsolderingmethods.

TheLEDsintheFortimoLEDDLMmoduleareconnectedinseries.IfoneLEDfails,thiswill

leadtoaninternalshort-circuit(characterofblueLEDs).Inthiscaseitwillstillconductcurrent,

sothattheotherLEDswillstilloperate.

Fortimo LED DLM system disposal

Attheendoftheir(economic)lifetime,appropriatedisposaloftheFortimoLEDDLMorits

componentsisrecommended.Themodulesarebasicallynormalpiecesofelectronicequipment

containingcomponentsthatatpresentarenotconsideredtobeharmfultotheenvironment,

orwhichcanbedisposedofwithnormalcare.Itisthereforerecommendedtodisposeofthese

partsasnormalelectronicwasteaccordingtolocalregulations.

8. Lighting installations and the environment

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Design-in guide Philips Fortimo LED downlight module system26

8...9 mm

0.5...1.0

12

3

4

DLM

FORTIMO DLM POWER SUPPLY

Engineering

sample

9. Schematic luminaire with the Fortimo LED DLM system

ThefirstFortimoLEDDLMsystemshavebeendesignedtobuildthe

driverinsidetheluminaire.AddedvalueopportunitiesforOEMare

optic-,heatsink-andluminairedesign(dottedlines).

PE (Protective Earth)connected to heat sink

PE (Protective Earth)connected to enclosure

FortimoLEDDLMsystemsareclass2systemsthatrequire

properprotectiveearthwiring.It’simportantthatthedriver

isconnectedtoprotectiveearth.Thedrawingontheright

showshowtoproperlywiretheFortimoLEDDLMmodule

anddriver.

Page 27: OEM Design-in guide - futureelectronics.com LIGHTING... · Shape of heat sink 23 The Fortimo LED DLM with the two connected heat sinks and three thermo couples installed 23 How to

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9. Schematic luminaire with the Fortimo LED DLM system