ATS, Advanced Thermal Solutions, Inc, has compiled several expert technical resources for thermally managing LED lighting. The Expert Resource Kit for Better Thermal Management of LED Lighting is compendium of free downloadable information.
The Kit is specifically for thermal management professionals in the LED lighting industry and for engineers who are responsible for ensuring the proper performance of LED designs.
Included in the Resource Kit are:
LED Heat Transfer and Cooling Options: Lighting the Way for LED Development
Mentor Graphics Webinar (free registration required): Diagnosing and Solving Thermal Challenges in Next Generation LED
ATS Case Study: Feasibility Study of an LED-Based Lighting System Using Analytical Modeling
ATS Article: How to Cool High Power LEDs
Clemens Lasance Lecture on LED Thermal Management: Thermal Management for LED Applications: What is the Role of the PCB?
Clemens Lasance, Michael Gay, Norm Berry, Richard A. Wessel on MCPCBs for LED Applications:MCPCBs for LED Applications, Thermal Management Material Specifications
Dr. Kaveh Azar Video Interview: LED Heat Sink Types and Applications
Dr. Kaveh Azar, President and CEO of Advanced Thermal Solutions, and John O’Day, Director of Marketing, sat down to discuss what an LED heat sink is, and how to use them. Our 5 minute, informal interview is chock full of information on LED heat sinks.
The results of our study were quite interesting. As you can see from the following graph, graphite was a good material but not the best. Copper and Aluminum performed better and similarly.
Our conclusions were:
Copper and Aluminum are very close in thermal performance. If weight is an issue or cost, then Aluminum is the way to go. The size of your heat sink or the thermal interface material can often make the difference too.
Pure copper has about 2x the conductivity of aluminum but that inherent advantage is only helpful when
Air Flow speeds are 800LFM
The hot spot on the CPU or other semiconductor is small in comparison to the size of the chip itself.
When air flow is 400LFM or lower or the hot spot on the CPU or semiconductor is spread throughout the chip, then Aluminum is a better choice.
The cost of a copper heatsink is often up to 3x the equivalent sized aluminum heatsink
Graphite foam-derived heat sinks show promise in specific applications, but exhibit several drawbacks in mainstream electronics cooling.
We’ve written a number of case studies on thermal analysis and thermal design for LED Lights, thermally optimizing a PCB, and even liquid cooling. We thought we’d put them in one place up to now to make them easier to find. You can do this yourself as well by clicking on the drop down box “blog article categories” in the right hand column of our blog and choosing the category “case study”.
We just wanted to take a minute to remind our readers that we’ll be hosting a free webinar on Thursday, September 23 @ 2PM EST: “LED Thermal Management in Commercial and Consumer Lighting Applications”.
We’d also like to thank our new sponsor for this and the next webinar, Ellsworth Adhesives. Ellsworth is a global company that distributes a wide range of adhesives and chemicals and, of most interest to our readers, thermally conductive tape.