Diagnostics of LED-based streetlighting luminaires by means of thermal transient method
|
|
- Crystal Harmon
- 8 years ago
- Views:
Transcription
1 Budapest University of Technology and Economics Department of Electron Devices Diagnostics of LED-based streetlighting luminaires by means of thermal transient method Gábor Marosy, Zoltán Kovács, András Poppe The 16 th THERMINIC Workshop, 6-8 October 2010, Barcelona, Spain
2 Introduction Similar trends in SSL like Moore s Law in microelectronics Continuous decrease of price of light [$/lm] More application fields, streetlighting is among the early birds Low voltage levels controllability 2
3 Introduction LED based light sources still more expensive than traditional ones, but they provide some benefits Longer life-times expected if junction temperatures are kept low 50% liminous flux 80% limous flux Controllability (in case of DC driving) DC power distribution networks for indoor applications? Easy dimming (e.g. by PWM) Possibility of integration with communications networks Possibility of built-in intelligence, including diagnostic functions Streetligting: present safety standards allow low voltage only inside an LED luminaire DC driven LEDs with driver/control circuitry 3
4 Introduction: vision of intelligent streetlighting Control, diagnostics, sensing and communications functions can be built in. 4
5 What is the real issue? Keep T j low! In case of LEDs, heat-loss is mainly by conduction Power LED heat loss: ~85-60%, mostly by conduction - Heat-conduction is the initial part of the dissipation The luminaire is used as a heatsink, like in case of retrofit LED lamps There are different thermal interfaces present in the heat-flow path light: ~15..40% active layer to submount classical die attach (TIM1) solder/glue to MCPCB classical TIM to heat-sink (TIM2) Thermal transient testing proved to be a good testing tool for TIMs 5
6 The luminaire acts as a heat-sink Quality of the TIM between the LEDs and the luminaire is critical LED package models identified by T3Ster+TERALED, simulation by FloTHERM CAD model by courtesy of HungaroLux Ltd. (Budapest, Hungary) 6
7 Cth [Ws/K] Pulse thermal resistance [K/W] Data from thermal transient tests of LEDs Power h(t) Junction temperature a(t) time time Package dynamic model 100 Structure function T3Ster Master: cumulative structure function(s) CREE_MCE_AL_2_25_MY_F1_T25_I Ch Pulse thermal resistance diagram T3Ster Master: Pulse Rth Diagram CREE_MCE_AL_2_25_MY_F1_T25_I CREE_MCE_AL_2_25_MY_F1_T25_I CREE_MCE_AL_2_25_MY_F1_T25_I CREE_MCE_AL_2_25_MY_F1_T25_I e-5 1e Rth [K/W] The h(t) step-wise change in heating is applied at the junction (abrupt switching) The a(t) temperature response at the junction is being measured (unit-step response function) while linearity is assumed All available information is extracted from a(t) using sophisticated mathematical procedures structure functions ideal to characterize TIM compact dynamic thermal models pulsed thermal resistance / complex locus (frequency domain representation) 7 Time [s]
8 The goal is: assess quality of TIMs in the field How feasible is it? Case studies of different assemblies for streetligting luminaires analyzed by thermal transient measurements Temperature dependent change of TIM observed (Poppe et al, SEMI-THERM 10) Long term stability studies have been performed to see what one may expect Changes of classical TIM observed frequently (Poppe et al, SPIE SSL 10) In case of some LEDs DA degradation and degradation of other thermal interfaces (such as glue/solder between the LED package and MCPCB was observed) Which change can be measured in a luminaire? At PWM-based dimming Short time windows only, e.g ms Would allow DA testing, but requires time and V F measurement resolution of a lab equipment Daytime, planned on/off sequences No testing time limitations With smaller time resolution classical TIM issues can be detected Timing requirements: for time constant measurement between 0.1 and 10 is necessary (Székely, THERMINIC 08) realistic with cheap circuitry Problems: no option for K-factor calibration / computation 8
9 Case study for the KÖZLED project 3 different assemblies with high-end 10W white LEDs FR4 PCB, TIM between the heat-slug and the Cu block FR4 PCB, heat-slug soldered to the Cu block MCPCB-s made of Al and Cu, heat-slug soldered CAD images by courtesy of OptimalOptik Ltd. 9
10 Results for 10W white LEDs Measured at 700 ma and 85 o C Thermal impedance of 3 samples, power corrected with P opt FSF52 AL TG2500 R thjc real 2 K/W 10
11 Results for 10W white LEDs Measured at 700 ma and 85 o C Structure functions of 3 samples, power corrected with P opt TG2500 AL FSF52 R thjc real 2 K/W R thjc is identified in a way similar to the transient double interface method, standardized by the JEDEC JC15 committee 11
12 Results for 10W white LEDs Measured at 700 ma & between 15 o C and 85 o C Structure functions of sample AL-2, power corrected with P opt LED package: no variation Al MCPCB &TIMs: temperature dependence As temperature changed, TIM quality changed 12
13 LM80 Univ. of Pannonia, Hungary LM80 test chamber with all the LEDs assembled All measurements are done in-situ to eliminate any R th change which is NOT due to ageing In-situ thermal transient measurement In-situ light output measurement 13
14 Results from LM80 test of different LEDs In cooperation with University of Pannonia, Veszprém (Hungary), within the KöZLED project 8 different kinds of LEDs from 4 vendors, so far 4000h burning time 110% 105% 100% 95% 90% 85% 4.Osram Vendor LUWV5AM O 350mA Relative luminous flux Time [h] aver. Ligh output drop likely due to increased R th caused by TIM degradation, not by LED degradation No change inside the LED package Structure functions taken at 0h, 500h, 1000h 14
15 T J [ C] C th [Ws/K] Results from LM80 tests: with accurate dv F /dt Results when accurate temperature sensitivity of the forward voltage is considered in thermal transient testing: T3Ster Master: Smoothed response T3Ster Master: cumulative structure function(s) Vendor O, sample #44, 0h Vendor O, sample #44, 500h Vendor O, sample #44, 2000h Vendor O, sample #44, 3000h With real values of dv F /dt 0 1e-6 1e-5 1e Problems: dv F /dt sensitivity also changes in time We have no means to calibrate t [s] e-4 1e-5 Vendor O, sample #44, 0h Vendor O, sample #44, 500h Vendor O, sample #44, 2000h Vendor O, sample #44, 3000h With real values of dv F /dt LED package: small variation after 500h R th [K/W] TIM: R thja 15
16 Sensitivity [mv/k] Results from LM80 tests: changing dv F /dt Results for the changes of the temperature sensitivity of the forward voltage for samples of vendor O: Vendor O, samples 41-46: dv F /dt Sensitivity Change O_41 O_42 O_43 O_44 O_45 O_ t [hour] E.g. for sample #44 4.3% change in the temperature sensitivity was observed This change compensates the effect of TIM ageing 16
17 Cth [Ws/K] T J [ C] Results from LM80 tests: without real dv F /dt Considering a constant sensitivity value (-2mV/K) the aging of TIM is screened: T3Ster Master: Smoothed response Vendor O, sample #44, 0h Vendor O, sample #44, 500h Vendor O, sample #44, 2000h Vendor O, sample #44, 3000h T3Ster Master: cumulative structure function(s) GoldenD_44_0h - Ch. 0 44_54_64_500h - Ch _2000h - Ch. 3 14_24_34_44_3000h - Ch dv F /dt = -2mV/K e-4 0 1e-6 1e-5 1e t [s] We may expect to see drastic changes only! 1e Rth [K/W] With an assumed constant sensitivity even structure functions appear to be identical, though in a quick diagnostic system in the field probably there will be no possibility to implement structure function calculations. 17
18 C th [Ws/K] Sensitivity [mv/k] Drastic ageing observed at another vendor Results with real sensitivities: T3Ster Master: cumulative structure function(s) Vendor HK, samples 61-65: dv F /dt Sensitivity Change HK_61 HK_62 HK_63 HK_64 HK_65 t [hour] e-4 Vendor HK, sample #61, 0h Vendor HK, sample #61, 500h Vendor HK, sample #61, 2000h Vendor HK, sample #61, 3000h With real values of dv F /dt 1e R th [K/W] 18
19 Cth [Ws/K] T J [ C] Drastic ageing observed at another vendor Results considering an assumed constant sensitivity only: T3Ster Master: Smoothed response Vendor HK, sample #61, 0h Vendor HK, sample #61, 500h Vendor HK, sample #61, 2000h Vendor HK, sample #61, 3000h dv F /dt = -2mV/K Delamination of the LED/MCPCB interface as well as TIM ageing can be observed even from the measured raw forward voltage transients T3Ster Master: cumulative structure function(s) HK_61_0h - Ch. 0 41_51_61_500h - Ch _2000h - Ch. 1 51_61_71_3000h - Ch e-6 1e-5 1e t [s] 1 30 s measurement time is sufficient for this test, sufficient time resolution can be 0.1ms or even 1ms Real life conditions are even harsher: vibration humidity temperature cycling e Rth [K/W] 19
20 Conclusions We made an analysis of possible structural integrity issues in the junction to ambient heat-flow paths of LEDs to be used in streetlighting luminaires. Preliminary results of long term stability studies of LEDs suggest that in harsh environment we should expect degradation of the different thermal interfaces. If the degradation exceeds a given limit (resulting thermal resistance change bigger then variation of temperature sensitivity of the forward woltage), with built-in thermal transient measurement based diagnosis early warnings can be provided and maintenance of luminaires can be scheduled to avoid fatal breakdown. Requirements for such testing circuitry are not too high, ~1ms time resolution seems to be sufficient ti detect LED/MCPCB or TIM2 delamination/ageing No sophisticated data processing is required for such tests, it seems, raw forward voltage transients are sufficient 20
21 Acknowledgements This work was partially supported by the KÖZLED TECH_08-A4/ project of the Hungarian National Technology Research and Development Office. Further support of the Hungarian Government through the TÁMOP-4.2.1/B-09/1/KMR project at the Budapest University of Technology and Economics is also acknowledged. We are grateful for the help of KÖZLED partners: University of Pannonia (Veszprém, Hungary) for sharing their LM80 test facility and test results with us. OptimalOptic Ltd. for LED samples with different thermal management solutions and their CAD images Hungarolux Ltd. for CAD images of their luminaires Help of Mentor Graphics MicReD Division is also acknowledged for some CFD simulations as well as helping us perform some of our measurements 21
New JEDEC thermal testing standards for high power LEDs
New JEDEC thermal testing standards for high power LEDs András Poppe, PhD Mentor Graphics Mechanical Analysis Division MicReD team also with Budapest University of Technology & Economics Department of
More informationWelcome to this presentation on LED System Design, part of OSRAM Opto Semiconductors LED 101 series.
Welcome to this presentation on LED System Design, part of OSRAM Opto Semiconductors LED 101 series. 1 To discuss the design challenges of LED systems we look at the individual system components. A basic
More informationCree XLamp Long-Term Lumen Maintenance
Cree XLamp Long-Term Lumen Maintenance July 29 This application note outlines Cree s long-term testing methodology and provides Cree s guidance on mean L 7 lifetimes for XLamp XR-E LED lamps in a wide
More informationHSMtec. Intelligent Printed Circuit Boards for innovative LED products. Copyright, Häusermann GmbH, 2012
Intelligent Printed Circuit Boards for innovative LED products Copyright, Häusermann GmbH, 2012 Häusermann GmbH I A-3571 Gars am Kamp I Zitternberg 100 I Tel.: +43 2985 2141-9620 I Fax: +43 2985 2141-333
More information10 ma LED driver in SOT457
SOT457 in SOT457 Rev. 1 20 February 2014 Product data sheet 1. Product profile 1.1 General description LED driver consisting of resistor-equipped PNP transistor with two diodes on one chip in an SOT457
More informationWelcome to this presentation on Driving LEDs Resistors and Linear Drivers, part of OSRAM Opto Semiconductors LED Fundamentals series.
Welcome to this presentation on Driving LEDs Resistors and Linear Drivers, part of OSRAM Opto Semiconductors LED Fundamentals series. In this presentation we will look at: - Simple resistor based current
More informationEfficient and reliable operation of LED lighting is dependent on the right choice of current-limiting resistor
Efficient and reliable operation of LED lighting is dependent on the right choice of current-limiting resistor Phil Ebbert, VP of Engineering, Riedon Inc. Introduction Not all resistors are the same and
More informationThe Latest in LED Lighting Test Methods and Standards. Jianzhong Jiao, Ph.D. OSRAM Opto Semiconductors Inc.
The Latest in LED Lighting Test Methods and Standards Jianzhong Jiao, Ph.D. OSRAM Opto Semiconductors Inc. EPA Energy Star Products Partner Meeting Oct. 22, 2012 2 Outline Introduction Updates for LED
More informationEVERLIGHT ELECTRONICS CO.,LTD. Technical Data Sheet High Power LED 1W (Preliminary)
Technical Data Sheet High Power LED 1W (Preliminary) Features Feature of the device: small package with high efficiency Typical view angle: 150. Typical light flux output: 30 lm @ 350mA. ESD protection.
More informationWelcome to this presentation on Thermal Characteristics of LEDs, part of OSRAM Opto Semiconductors LED Fundamentals series.
Welcome to this presentation on Thermal Characteristics of LEDs, part of OSRAM Opto Semiconductors LED Fundamentals series. In this presentation we will look at the basics of thermal management in LED
More informationJD(Doug) Rooks Western Area Applications Manager
AC vs DC LED Design/Benefits JD(Doug) Rooks Western Area Applications Manager Seoul Semiconductor Product Summary Acriche Side View LED Dot Matrix Z-Power LED Chip LED Lamp LED Custom Display Deep UV Top
More informationLM1084 5A Low Dropout Positive Regulators
5A Low Dropout Positive Regulators General Description The LM1084 is a series of low dropout voltage positive regulators with a maximum dropout of 1.5 at 5A of load current. It has the same pin-out as
More informationHigh flux for outdoor applications
General Illumination LUXEON R High flux for outdoor applications LUXEON R brings illumination grade LED light sources to outdoor and industrial lighting applications and makes it easier than ever to design
More informationCoolMOS TM Power Transistor
CoolMOS TM Power Transistor Features New revolutionary high voltage technology Intrinsic fast-recovery body diode Extremely low reverse recovery charge Ultra low gate charge Extreme dv /dt rated Product
More informationDiscontinued. LUXEON V Portable. power light source. Introduction
Preliminary Technical Datasheet DS40 power light source LUXEON V Portable Introduction LUXEON is a revolutionary, energy efficient and ultra compact new light source, combining the lifetime and reliability
More informationAND8433/D. Using ON Semiconductor Constant Current Regulator (CCR) Devices in AC Applications APPLICATION NOTE
Using ON Semiconductor Constant Current Regulator (CCR) Devices in AC Applications Introduction This update includes additional information on 220 V ac lighting circuits with the addition of ON Semiconductors
More information1W High Power Purple LED Technical Data Sheet. Part No.: LL-HP60MUVA
1W High Power Purple LED Technical Data Sheet Part No.: LL-HP60MUVA Spec No.: HP60M Rev No.: V.2 Date: Aug./18/2009 Page: 1 OF 8 Features: Luckylight High power LED type. Lead frame type package (Heat
More informationCHAPTER 6 THERMAL DESIGN CONSIDERATIONS. page. Introduction 6-2. Thermal resistance 6-2. Junction temperature 6-2. Factors affecting R th(j-a) 6-2
CHAPTER 6 THERMAL DESIGN CONSIDERATIONS page Introduction 6-2 Thermal resistance 6-2 Junction temperature 6-2 Factors affecting 6-2 Thermal resistance test methods 6-3 Test procedure 6-3 Forced air factors
More informationCree XLamp MX-6 LEDs Data Sheet
Cree XLamp MX-6 LEDs Data Sheet The Cree XLamp MX-6 LED provides the proven lighting-class performance and reliability of Cree XLamp LEDs in a flat-top PLCC package. The XLamp MX-6 LED continues Cree s
More informationIDB45E60. Fast Switching EmCon Diode. Product Summary V RRM 600 V I F 45 A V F 1.5 V T jmax 175 C
Fast Switching EmCon Diode Feature 600 V EmCon technology Fast recovery Soft switching Low reverse recovery charge Low forward voltage 175 C operating temperature Easy paralleling Product Summary V RRM
More informationLUXEON TX Extreme efficacy that will transform your next market leading luminaire
LUXEON TX Extreme efficacy that will transform your next market leading luminaire Introduction LUXEON TX emitters are illumination grade LEDs designed to deliver high efficacy with high flux density to
More informationIDB04E120. Fast Switching EmCon Diode. Product Summary V RRM 1200 V I F 4 A V F 1.65 V T jmax 150 C
Fast Switching EmCon Diode Feature 12 V EmCon technology Fast recovery Soft switching Low reverse recovery charge Low forward voltage Easy paralleling Product Summary V RRM 12 V I F 4 V F 1.65 V T jmax
More informationCree XLamp XM-L LED 10,000-Lumen High-Bay Reference Design
application note Cree XLamp XM-L LED 10,000-Lumen High-Bay Reference Design CLD-AP96 rev 0A Table of Contents Introduction... 1 Design approach/objectives... 2 The 6-step methodology... 2 1. Define lighting
More informationLM138 LM338 5-Amp Adjustable Regulators
LM138 LM338 5-Amp Adjustable Regulators General Description The LM138 series of adjustable 3-terminal positive voltage regulators is capable of supplying in excess of 5A over a 1 2V to 32V output range
More informationOptiMOS 3 Power-Transistor
Type IPD36N4L G OptiMOS 3 Power-Transistor Features Fast switching MOSFET for SMPS Optimized technology for DC/DC converters Qualified according to JEDEC ) for target applications Product Summary V DS
More informationAS2815. 1.5A Low Dropout Voltage Regulator Adjustable & Fixed Output, Fast Response
1.5A Low Dropout oltage Regulator Adjustable & Fixed Output, Fast Response FEATURES Adjustable Output Down To 1.2 Fixed Output oltages 1.5, 2.5, 3.3, 5.0 Output Current of 1.5A Low Dropout oltage 1.1 Typ.
More informationThermal Simulation of Power MOSFETs on the P-Spice Platform
Vishay Siliconi Thermal Simulation of Power MOSFETs on the P-Spice Platform Author: Kandarp Pandya INTRODUCTION R-C thermal model parameters for Vishay power MOSFETs available under the product information
More informationLED Luminaire Design Guide
Application Note CLD-AP15 rev 0D Table of Contents Introduction... 1 Design Approach... 2 Design Process... 3 1. Define Lighting Requirements... 4 2. Define Design Goals... 5 3. Estimate Efficiencies of
More informationProduct family data sheet
Cree XLamp MX-6 LEDs Product family data sheet CLD-DS23 Rev 3A Product Description The Cree XLamp MX-6 LED provides the proven lightingclass performance and reliability of Cree XLamp LEDs in a flat-top
More information5SDD 92Z0401. Housingless Welding Diode. I FAVm = 9 244 A I FSM = 60 000 A V TO = 0.780 V Applications r T = 0.031 m. Types.
SDD 92Z41 Housingless Welding Diode Properties SDD 92Z41 Key Parameters High forward current capability V RRM = 4 V Low forward and reverse recovery losses I FAVm = 9 244 A I FSM = 6 A V TO =.78 V Applications
More informationIDB09E120. Fast Switching EmCon Diode. Product Summary V RRM 1200 V I F 9 A V F 1.65 V T jmax 150 C
Fast Switching EmCon Diode Feature 1200 V EmCon technology Fast recovery Soft switching Low reverse recovery charge Low forward voltage Easy paralleling Product Summary V RRM 1200 V I F 9 V F 1.65 V T
More informationAvailable in white (2,600 K to 8,300 K CCT) Maximum drive current: 1000 ma. Wide viewing angle: 120. Electrically neutral thermal path
PRODUCT FAMILY DATA SHEET CLD-23 REV 3 Cree XLamp MX-6 LEDs PRODUCT DESCRIPTION The Cree XLamp MX-6 LED provides the proven lighting-class performance and reliability of Cree XLamp LEDs in a flat-top PLCC
More informationOptiMOS 3 Power-Transistor
Type IPD6N3L G OptiMOS 3 Power-Transistor Features Fast switching MOSFET for SMPS Optimized technology for DC/DC converters Qualified according to JEDEC 1) for target applications Product Summary V DS
More informationIDB30E120. Fast Switching EmCon Diode. Product Summary V RRM 1200 V I F 30 A V F 1.65 V T jmax 150 C
Fast Switching EmCon Diode Feature 1200 V EmCon technology Fast recovery Soft switching Low reverse recovery charge Low forward voltage Easy paralleling Product Summary V RRM 1200 V I F 30 V F 1.65 V T
More informationLM79XX Series 3-Terminal Negative Regulators
LM79XX Series 3-Terminal Negative Regulators General Description The LM79XX series of 3-terminal regulators is available with fixed output voltages of b5v b8v b12v and b15v These devices need only one
More informationEverline Module Application Note: Round LED Module Thermal Management
Everline Module Application Note: Round LED Module Thermal Management PURPOSE: Use of proper thermal management is a critical element of Light Emitting Diode (LED) system design. The LED temperature directly
More informationOptiMOS TM Power-Transistor
Type BSC28N6NS OptiMOS TM Power-Transistor Features Optimized for high performance SMPS, e.g. sync. rec. % avalanche tested Superior thermal resistance N-channel Qualified according to JEDEC ) for target
More informationData Sheet. Nationstar LED
Data Sheet Nationstar LED 1 Table of Contents General Informations:... 3 Electrical and Flux Characteristics... 3 Color Wavelength Diagram:... 6 Mechanical Dimensions:... 7 Electrical Connection:... 7
More informationLM78XX Series Voltage Regulators
LM78XX Series Voltage Regulators General Description Connection Diagrams The LM78XX series of three terminal regulators is available with several fixed output voltages making them useful in a wide range
More informationCS8481. 3.3 V/250 ma, 5.0 V/100 ma Micropower Low Dropout Regulator with ENABLE
3.3 /250 ma, 5.0 /100 ma Micropower Low Dropout Regulator with The CS8481 is a precision, dual Micropower linear voltage regulator. The switched 3.3 primary output ( OUT1 ) supplies up to 250 ma while
More informationLM337. Three-terminal adjustable negative voltage regulators. Features. Description
Three-terminal adjustable negative voltage regulators Datasheet - production data current limit, thermal overload protection and safe area protection. All overload protection circuitry remains fully functional
More informationCurrent Limiting Power Resistors for High-Power LED Module Lighting Applications
Current Limiting Power Resistors for High-Power LED Module Lighting Applications PWR263 An ongoing trend toward miniaturization of virtually all electronics is accompanied by the demand for a reduction
More informationWelcome to this presentation on Driving LEDs AC-DC Power Supplies, part of OSRAM Opto Semiconductors LED Fundamentals series. In this presentation we
Welcome to this presentation on Driving LEDs AC-DC Power Supplies, part of OSRAM Opto Semiconductors LED Fundamentals series. In this presentation we will look at: - the typical circuit structure of AC-DC
More informationLM2941/LM2941C 1A Low Dropout Adjustable Regulator
LM2941/LM2941C 1A Low Dropout Adjustable Regulator General Description The LM2941 positive voltage regulator features the ability to source 1A of output current with a typical dropout voltage of 0.5V and
More informationThermal Analysis, Heat Sink Design and Performance Verification for GE Fanuc Intelligent Platform s WANic 3860 Packet Processor PCI Card
CASE STUDY Thermal Analysis, Heat Sink Design and Performance Verification for GE Fanuc Intelligent Platform s WANic 3860 Packet Processor PCI Card Challenge When GE Fanuc Intelligent Platforms, a leading
More informationHardware Documentation. Data Sheet HAL 202. Hall-Effect Sensor. Edition Sept. 18, 2014 DSH000159_002EN
Hardware Documentation Data Sheet HAL 202 Hall-Effect Sensor Edition Sept. 18, 2014 DSH000159_002EN HAL202 Copyright, Warranty, and Limitation of Liability The information and data contained in this document
More informationLM3940 1A Low Dropout Regulator for 5V to 3.3V Conversion
1A Low Dropout Regulator for 5V to 3.3V Conversion General Description The LM3940 is a 1A low dropout regulator designed to provide 3.3V from a 5V supply. The LM3940 is ideally suited for systems which
More informationLM2576R. 3.0A, 52kHz, Step-Down Switching Regulator FEATURES. Applications DESCRIPTION TO-220 PKG TO-220V PKG TO-263 PKG ORDERING INFORMATION
LM2576 FEATURES 3.3, 5.0, 12, 15, and Adjustable Output ersions Adjustable ersion Output oltage Range, 1.23 to 37 +/- 4% AG10Maximum Over Line and Load Conditions Guaranteed 3.0A Output Current Wide Input
More informationApplication Note, V1.0, 2008 AN2008-03. Thermal equivalent circuit models. replaces AN2001-05. Industrial Power
Application Note, V1.0, 2008 AN2008-03 Thermal equivalent circuit models replaces AN2001-05 Industrial Power Edition 2008-06-16 Published by Infineon Technologies AG 59568 Warstein, Germany Infineon Technologies
More information28V, 2A Buck Constant Current Switching Regulator for White LED
28V, 2A Buck Constant Current Switching Regulator for White LED FP7102 General Description The FP7102 is a PWM control buck converter designed to provide a simple, high efficiency solution for driving
More informationSIPMOS Small-Signal-Transistor
SIPMOS Small-Signal-Transistor Features N-channel Depletion mode dv /dt rated Product Summary V DS V R DS(on),max 3.5 Ω I DSS,min.4 A Available with V GS(th) indicator on reel Pb-free lead plating; RoHS
More informationTGP-751 TGP-651. ThermoGenerator-Package (TGP) Thin Film Thermogenerator inside standard package. Preliminary Datasheet
TGP-751 TGP-651 (TGP) Thin Film Thermogenerator inside standard package Preliminary Datasheet Important Notices Please read carefully prior to use Micropelt Products are prototypes Micropelt supplies thermoelectric
More informationAdvanced Monolithic Systems
Advanced Monolithic Systems FEATURES Three Terminal Adjustable or Fixed oltages* 1.5, 1.8, 2.5, 2.85, 3.3 and 5. Output Current of 1A Operates Down to 1 Dropout Line Regulation:.2% Max. Load Regulation:.4%
More information50W EdiStar. Approved By Customer. Designer Checker Approval. Ultra High Power LED
Ultra High Power LED 50W EdiStar EdiStar Emitter Approved By Customer Designer Checker Approval Date:2006/12/04 Version:Preliminary V0.1 4F, No. 800, Chung-Cheng Rd, Chung-Ho, Taipei 235, Taiwan Tel: 886-2-8227-6996
More informationFinal data. Maximum Ratings Parameter Symbol Value Unit
SPPN8C3 SPN8C3 Cool MOS Power Transistor V DS 8 V Feature R DS(on).45 Ω New revolutionary high voltage technology Ultra low gate charge I D Periodic avalanche rated Extreme dv/dt rated Ultra low effective
More informationNational Semiconductor Power Products - Seminar 3 (LED Lighting)
National Semiconductor Power Products - Seminar 3 (LED Lighting) Dr. Iain Mosely Converter Technology Ltd. Slide 1 Overview Background on LEDs Power Electronics for Driving LEDs LED Driver Specific Solutions
More informationBrilliant Mix System Design. Abstract
Brilliant Mix System Design Abstract Brilliant Mix refers to a light system containing a mix of high efficacious EQ white LEDs with amber red LEDs. Brilliant Mix allows high efficacious white light sources
More informationCold-Junction-Compensated K-Thermocoupleto-Digital Converter (0 C to +1024 C)
19-2235; Rev 1; 3/02 Cold-Junction-Compensated K-Thermocoupleto-Digital General Description The performs cold-junction compensation and digitizes the signal from a type-k thermocouple. The data is output
More information45 V, 100 ma NPN/PNP general-purpose transistor
Rev. 4 18 February 29 Product data sheet 1. Product profile 1.1 General description NPN/PNP general-purpose transistor pair in a very small SOT363 (SC-88) Surface-Mounted Device (SMD) plastic package.
More informationSchottky Rectifier, 1.0 A
Schottky Rectifier, 1.0 A VS-BQ040-M3 Cathode Anode PRODUCT SUMMARY Package SMB I F(AV) 1.0 A V R 40 V V F at I F 0.38 V I RM 9 ma at 125 C T J max. 150 C Diode variation Single die E AS 3.0 mj FEATURES
More informationPreliminary Datasheet
Features Macroblock Preliminary Datasheet 1.2A Constant Output Current 93% Efficiency @ input voltage 13V, 350mA, 9~36V Input Voltage Range Hysteretic PFM Improves Efficiency at Light Loads Settable Output
More informationCree XLamp XP-G LEDs Data Sheet
Cree XLamp XP-G LEDs Data Sheet The XLamp XP-G LED delivers unprecedented levels of light output and efficacy for a single die LED. The XLamp XP-G LED continues Cree s history of innovation in LEDs for
More information65 V, 100 ma PNP/PNP general-purpose transistor
Rev. 02 19 February 2009 Product data sheet 1. Product profile 1.1 General description PNP/PNP general-purpose transistor pair in a very small SOT363 (SC-88) Surface-Mounted Device (SMD) plastic package.
More informationLM134-LM234-LM334. Three terminal adjustable current sources. Features. Description
Three terminal adjustable current sources Features Operates from 1V to 40V 0.02%/V current regulation Programmable from 1µA to 10mA ±3% initial accuracy Description The LM134/LM234/LM334 are 3-terminal
More informationSCR, 12 A, 15mA, 500 V, SOT78. Planar passivated SCR (Silicon Controlled Rectifier) in a SOT78 plastic package.
Rev. 5 2 March 29 Product data sheet 1. Product profile 1.1 General description Planar passivated SCR (Silicon Controlled Rectifier) in a SOT78 plastic package. 1.2 Features and benefits High reliability
More informationLDS8720. 184 WLED Matrix Driver with Boost Converter FEATURES APPLICATION DESCRIPTION TYPICAL APPLICATION CIRCUIT
184 WLED Matrix Driver with Boost Converter FEATURES High efficiency boost converter with the input voltage range from 2.7 to 5.5 V No external Schottky Required (Internal synchronous rectifier) 250 mv
More informationSurface Mount Technology cooling for high volumes applications by: Cesare Capriz Aavid Thermalloy via XXV Aprile 32 Cadriano (BO) ITALY
Surface Mount Technology cooling for high volumes applications by: Cesare Capriz Aavid Thermalloy via XXV Aprile 32 Cadriano (BO) ITALY Abstract: The automotive technology is fast moving in integrating
More informationDISCRETE SEMICONDUCTORS DATA SHEET. BZX384 series Voltage regulator diodes. Product data sheet Supersedes data of 2003 Apr 01.
DISCRETE SEMICONDUCTORS DATA SHEET Supersedes data of 2003 Apr 01 2004 Mar 22 FEATURES Total power dissipation: max. 300 mw Two tolerance series: ±2% and approx. ±5% Working voltage range: nominal 2.4
More informationL293B L293E PUSH-PULL FOUR CHANNEL DRIVERS. OUTPUT CURRENT 1A PER CHANNEL PEAK OUTPUT CURRENT 2A PER CHANNEL (non repetitive) INHIBIT FACILITY
L293B L293E PUSH-PULL FOUR CHANNEL DRIVERS OUTPUT CURRENT 1A PER CHANNEL PEAK OUTPUT CURRENT 2A PER CHANNEL (non repetitive) INHIBIT FACILITY. HIGH NOISE IMMUNITY SEPARATE LOGIC SUPPLY OVERTEMPERATURE
More informationT5 LongLast. GE Lighting DATA SHEET
GE Lighting T5 LongLast DATA SHEET Linear Fluorescent Lamps T5 LongLast High Efficiency 14W, 21W, 28W, 35W T5 LongLast High Output 24W, 39W, 49W, 54W, 8W Product information T5 LongLast lamps are triphosphor
More information3W RGB High Power LED
Features: Super high flux output and high luminance Designed for high current operation Low thermal resistance No UV Package Dimensions: Typical Applications Reading lights Portable flashlight Uplighters
More information40 V, 200 ma NPN switching transistor
Rev. 01 21 July 2009 Product data sheet BOTTOM VIEW 1. Product profile 1.1 General description NPN single switching transistor in a SOT883 (SC-101) leadless ultra small Surface-Mounted Device (SMD) plastic
More informationCree XLamp LED Operating Capacity
Cree XLamp LED Operating Capacity Application Note CLD-AP89 rev 0D Table of Contents Introduction and executive summary... 1 What is LED operating capacity?... 2 Design approach/objectives... 2 The 6-step
More informationCree XLamp MX-3S LEDs Data Sheet
Cree XLamp MX-3S LEDs Data Sheet The Cree XLamp MX-3S LED provides the proven lighting-class performance and reliability of Cree XLamp LEDs in a high voltage, PLCC configuration. All members of the MX-family
More informationFollowing are definitions for major parameters to consider when selecting a power line polarity protection diode for an automotive application.
Diode rectifiers are ideal solutions for automotive electronic power line protection and have several important parameters for these applications, including: Forward current, repetitive reverse voltage,
More informationHigh Performance Schottky Rectifier, 3.0 A
High Performance Schottky Rectifier, 3. A Cathode Anode SMC PRODUCT SUMMARY Package SMC I F(AV) 3. A V R 4 V V F at I F.46 V I RM 3 ma at 25 C T J max. 5 C Diode variation Single die E AS 6. mj FEATURES
More informationCAT4109, CAV4109. 3-Channel Constant-Current RGB LED Driver with Individual PWM Dimming
3-Channel Constant-Current RGB LED Driver with Individual PWM Dimming Description The CAT419/CAV419 is a 3 channel constant current LED driver, requiring no inductor. LED channel currents up to 175 ma
More informationLUXEON S. High Flux Density
LUXEON S Optimized solution for applications requiring high flux and tight beam control Technical Datasheet DS80 LUXEON S High Flux Density Introduction The LUXEON S emitters deliver uniform beam intensity
More informationOptiMOS Power-Transistor Product Summary
OptiMOS Power-Transistor Product Summary V DS 55 V R DS(on),max 4) 35 mω Features Dual N-channel Logic Level - Enhancement mode AEC Q11 qualified I D 2 A PG-TDSON-8-4 MSL1 up to 26 C peak reflow 175 C
More informationLUXEON 5630 Mid-Power LEDs Illumination Portfolio
LUXEON 5630 Mid-Power LEDs Illumination Portfolio Introduction LUXEON 5630 delivers optimized performance in combination with quality of light needed for distributed light source applications. In addition
More informationApplication Note, V1.0, Nov. 2009 AN2009-10. Using the NTC inside a power electronic module IMM INP LP
Application Note, V1.0, Nov. 2009 AN2009-10 Using the NTC inside a power electronic module C o n s i d e r a t i o n s r e g a r d i n g t e m p e r a t u r e m e a s u r e m e n t IMM INP LP Edition 2010-01-13
More informationCA723, CA723C. Voltage Regulators Adjustable from 2V to 37V at Output Currents Up to 150mA without External Pass Transistors. Features.
CA73, CA73C Data Sheet April 1999 File Number 788. Voltage Regulators Adjustable from V to 37V at Output Currents Up to 1mA without External Pass Transistors The CA73 and CA73C are silicon monolithic integrated
More informationNJW4841-T1. 1-channel Switching Gate Driver
NJW8-T -channel Switching Gate Driver GENERAL DESCRIPTION The NJW8 is a High Speed Switching Gate Driver that is applicable A peak current. The NJW8 features are Withstand voltage of, recommended operating
More informationMT..KB SERIES 55 A 90 A 110 A THREE PHASE CONTROLLED BRIDGE. Power Modules. Features. Description. Major Ratings and Characteristics
MT..KB SERIES THREE PHASE CONTROLLED BRIDGE Power Modules Features Package fully compatible with the industry standard INT-A-pak power modules series High thermal conductivity package, electrically insulated
More informationSWITCH-MODE POWER SUPPLY CONTROLLER PULSE OUTPUT DC OUTPUT GROUND EXTERNAL FUNCTION SIMULATION ZERO CROSSING INPUT CONTROL EXTERNAL FUNCTION
SWITCH-MODE POWER SUPPLY CONTROLLER. LOW START-UP CURRENT. DIRECT CONTROL OF SWITCHING TRAN- SISTOR. COLLECTOR CURRENT PROPORTIONAL TO BASE-CURRENT INPUT REERSE-GOING LINEAR OERLOAD CHARACTERISTIC CURE
More informationTEA1024/ TEA1124. Zero Voltage Switch with Fixed Ramp. Description. Features. Block Diagram
Zero Voltage Switch with Fixed Ramp TEA04/ TEA4 Description The monolithic integrated bipolar circuit, TEA04/ TEA4 is a zero voltage switch for triac control in domestic equipments. It offers not only
More informationT5 Watt-Miser Linear Fluorescent lamps
GE Lighting T5 Watt-Miser Linear Fluorescent lamps DATA SHEET T5 Watt-Miser High Efficiency 13W, 20W, 26W, 33W T5 Watt-Miser High Output 21W, 36W, 46W, 51W, 76W Product information T5 Watt-Miser lamps
More informationA Guide to the Specification of LED Lighting Products 2012
October 2012 A Guide to the Specification of LED Lighting Products 2012 This Guide has been produced under the umbrella of the Lighting Industry Liaison Group and is endorsed by its member organisations:
More informationDirectFET TM - A Proprietary New Source Mounted Power Package for Board Mounted Power
TM - A Proprietary New Source Mounted Power Package for Board Mounted Power by Andrew Sawle, Martin Standing, Tim Sammon & Arthur Woodworth nternational Rectifier, Oxted, Surrey. England Abstract This
More informationLED Luminaires. White paper. Evaluating performance of. LED based. luminaires
LED Luminaires White paper Evaluating performance of LED based luminaires Evaluating performance of LED based luminaires Avoid comparing apples and pears In recent years there has been a significant increase
More informationLUXEON LEDs. Circuit Design and Layout Practices to Minimize Electrical Stress. Introduction. Scope LED PORTFOLIO
LED PORTFOLIO LUXEON LEDs Circuit Design and Layout Practices to Minimize Electrical Stress Introduction LED circuits operating in the real world can be subjected to various abnormal electrical overstress
More informationU LED modules, converters and systems GENERAL ILLUMINATION. Umodule SPOT P330-2 umodule SPOT PHASED OUT NTC
Product description Spotlights Downlights High-flux LED module Narrow colour temperature tolerance band Compact design Excellent thermal management 1 NTC for temperature control High-power LED in chip-on-board
More informationL6234. Three phase motor driver. Features. Description
Three phase motor driver Features Supply voltage from 7 to 52 V 5 A peak current R DSon 0.3 Ω typ. value at 25 C Cross conduction protection TTL compatible driver Operating frequency up to 150 khz Thermal
More information703-0148 InGaN / Sapphire White Water clear. Parameter Rating Unit
Package Dimensions: * All dimensions are in mm * Tolerance: ±.6mm unless otherwise noted. LED Chip Lens Colour Ant Part No. Material Colour Coordinates 73-148 InGaN / Sapphire White Water clear Absolute
More informationU LED modules, converters and systems GENERAL ILLUMINATION. Umodule SPOT P340-2 umodule SPOT PHASED OUT NTC 42.25 37 11 5.75 3.5 5.15 37.89 39.
Product description Spotlights Downlights High-flux LED module Narrow colour temperature tolerance band Compact design Excellent thermal management 1 NTC for temperature control High-power LED in chip-on-board
More informationMedium power Schottky barrier single diode
Rev. 03 17 October 2008 Product data sheet 1. Product profile 1.1 General description Planar medium power Schottky barrier single diode with an integrated guard ring for stress protection, encapsulated
More information45 V, 100 ma NPN general-purpose transistors
Rev. 9 2 September 214 Product data sheet 1. Product profile 1.1 General description NPN general-purpose transistors in Surface-Mounted Device (SMD) plastic packages. Table 1. Product overview Type number
More informationMotor-CAD Software for Thermal Analysis of Electrical Motors - Links to Electromagnetic and Drive Simulation Models
Motor-CAD Software for Thermal Analysis of Electrical Motors - Links to Electromagnetic and Drive Simulation Models Dave Staton, Douglas Hawkins and Mircea Popescu Motor Design Ltd., Ellesmere, Shropshire,
More informationLM386 Low Voltage Audio Power Amplifier
Low Voltage Audio Power Amplifier General Description The LM386 is a power amplifier designed for use in low voltage consumer applications. The gain is internally set to 20 to keep external part count
More informationDATA SHEET. TDA8560Q 2 40 W/2 Ω stereo BTL car radio power amplifier with diagnostic facility INTEGRATED CIRCUITS. 1996 Jan 08
INTEGRATED CIRCUITS DATA SHEET power amplifier with diagnostic facility Supersedes data of March 1994 File under Integrated Circuits, IC01 1996 Jan 08 FEATURES Requires very few external components High
More information