Project Lighting - April 2008 - (Page 16) FeAtURe computationaL anaLysis Contents Viewpoint Selecting HBLED Drivers for Lighting Apps Simulation Technique for Optimizing White-LED Design An Analytical Approach to Cooling HBLEDs Lighting News FIg 3 heating of an leD lamP can Be DiagrameD uSing an electrical analog. Computational analyses were used to develop secondorder solutions to verify results from the integral analysis. To develop a model that accurately represents the problem, the problem must be well understood. Computational fluid dynamics (CFD) simulation was used to characterize the spreading resistance, flow around the LED lamp, and heat sink performance (see Figure 4). FIg 4 a cfD Simulation of the leD lamP reSultS in the calculateD thermal characteriSticS ShoWn. The LEDs were represented by compact two-resistor models. The effect of the glue layer interface was added to R j-b, the thermal resistance between the chip and the heat-carrying layers of the PCB. A detailed model was used for the board to accurately represent the effect of spreading resistance. The heat sink was modeled in greater detail. Home Page Product Training Module Online Ordering Suppliers Catalog 16 | Project lighting | aPr 08 http://digikey.com/ http://ad.doubleclick.net/clk;198717884;26055153;t http://ad.doubleclick.net/clk;198717989;26055167;e http://ad.doubleclick.net/clk;198717988;26055168;e http://ad.doubleclick.net/clk;198717986;26055170;v http://ad.doubleclick.net/clk;198717985;26055171;v
Table of Contents Feed for the Digital Edition of Project Lighting - April 2008 Project Lighting - April 2008 Contents Viewpoint About Project Lighting Sponsor Simulation Technique for Optimizing White-LED Design An Analytical Approach to Cooling HBLEDs LED Lighting Needs Smarts to be Competitive Lighting News Enter to Win an iPhone Refernce Materials Lighting Quick Links Project Lighting - April 2008 Project Lighting - April 2008 - Project Lighting - April 2008 (Page 1) Project Lighting - April 2008 - Contents (Page 2) Project Lighting - April 2008 - Viewpoint (Page 3) Project Lighting - April 2008 - About Project Lighting Sponsor (Page 4) Project Lighting - April 2008 - About Project Lighting Sponsor (Page 5) Project Lighting - April 2008 - About Project Lighting Sponsor (Page 6) Project Lighting - April 2008 - About Project Lighting Sponsor (Page 7) Project Lighting - April 2008 - About Project Lighting Sponsor (Page 8) Project Lighting - April 2008 - Simulation Technique for Optimizing White-LED Design (Page 9) Project Lighting - April 2008 - Simulation Technique for Optimizing White-LED Design (Page 10) Project Lighting - April 2008 - Simulation Technique for Optimizing White-LED Design (Page 11) Project Lighting - April 2008 - Simulation Technique for Optimizing White-LED Design (Page 12) Project Lighting - April 2008 - An Analytical Approach to Cooling HBLEDs (Page 13) Project Lighting - April 2008 - An Analytical Approach to Cooling HBLEDs (Page 14) Project Lighting - April 2008 - An Analytical Approach to Cooling HBLEDs (Page 15) Project Lighting - April 2008 - An Analytical Approach to Cooling HBLEDs (Page 16) Project Lighting - April 2008 - An Analytical Approach to Cooling HBLEDs (Page 17) Project Lighting - April 2008 - LED Lighting Needs Smarts to be Competitive (Page 18) Project Lighting - April 2008 - LED Lighting Needs Smarts to be Competitive (Page 19) Project Lighting - April 2008 - LED Lighting Needs Smarts to be Competitive (Page 20) Project Lighting - April 2008 - LED Lighting Needs Smarts to be Competitive (Page 21) Project Lighting - April 2008 - Lighting News (Page 22) Project Lighting - April 2008 - Enter to Win an iPhone (Page 23) Project Lighting - April 2008 - Refernce Materials (Page 24) Project Lighting - April 2008 - Refernce Materials (Page 25) Project Lighting - April 2008 - Refernce Materials (Page 26) Project Lighting - April 2008 - Lighting Quick Links (Page 27) Project Lighting - April 2008 - Lighting Quick Links (Page 28)
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