Late in 1988 two key employees of CHAM (Concentration Heat And Momentum Ltd.), the first commercial CFD vendor and at the time market leader, left to set up a new type of CFD company. Recognising the opportunity to package CFD in focussed, highly automated and application specific products, David Tatchell and Harvey Rosten started to develop what would become FloTHERM. A CFD … [Read more...]
Thermal Venting with Thermal Vias
Thermal vias are merely one tool, albeit sometimes an important tool, in the thermal engineer's arsenal of techniques for getting heat away from potentially overheating electronics components. The problem is, vias don't actually "cool" a hot device in and of themselves. As their name implies ("vias"), what they really are is nothing more than a short pathway for unwanted heat … [Read more...]
Alumina Substrate Packs More Passive Components into Less Space
Today’s electronic device market is characterized by two conflicting demands: more power, less space. As users come to expect ever more capabilities from ever smaller electronics, electrical engineers are in need of innovative and efficient new solutions for packing more components into shrinking board space. However, this pressure isn’t limited to iPhones, tablets, and other … [Read more...]
Power Density and the 1-cm Cell Phone
It seems that everybody knows that power density keeps increasing, inexorably. How are we going to manage that? In my discussions with otherwise knowledgeable folks, however, it becomes immediately apparent that there's a huge disconnect in what we mean by power. Case in point: someone mentioned to me last week a "1 cm cell phone." Now to be perfectly honest, I'm not really … [Read more...]
Why Not Just Shove a Heatsink on Top of it? Part 3: Pads, Vias and Undersinking
An appreciation of heat flow paths is a pre-requisite for good thermal design. If you attempt to augment heat flow where there is none then your expectations are as futile as your design skills. The real value of simulation for me is that it enables an insight into the behaviour of a proposed design (this is true for simulation of any design and any behaviour). Once you … [Read more...]
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