Lumped block package representation makes the best use of limited available data to simulate for an ‘indication’ of case temperature. Some indication is better than none but I wouldn’t bet on it, really, I wouldn’t. Accurate case and junction temperature prediction can only be realised with either a fully 3D detailed representation or an abstracted CTM … [Read more...]
What’s black and stuck on a PCB?
Hmmm… If you’re guessing it’s a chip package, you’re right – got it in one. Well done! OK, so what type of package is it? If you’re thinking it’s a silly question as you don’t know anything about the package, other than I’ve told you its black - that was a hint that it’s an encapsulated plastic part by the way - you’d be right. You’d need me to tell you if it had leads, and if … [Read more...]
Back to the Future with a Liquid Cooled Supercomputer
Introduction: Evolution of Air and Water Cooling for Electronic Systems Since the development of the first electronic digital computers in the 1940s, efficient removal of heat has played a key role in insuring the reliable operation of successive generations of computers. In many instances the trend toward higher circuit packaging density to provide reductions in circuit delay … [Read more...]
The Better Box Model
Introduction For the consumer, natural convection cooling or fan-less cooling is the method of choice. It is silent, it is reliable, it is simple, and it is environmentally sound because no additional energy is used to remove the excess heat. For the thermal engineer, fan-less cooling is more problematic. On the plus side, no fan is needed, so there is an attractive cost … [Read more...]
Use of Power Law Regression in Packaging Thermal Calculations
Introduction In today’s demanding business climate, thermal engineers are often called upon to produce thermal analyses rapidly. For example, there is frequently the need for a quick calculation of a JEDEC-standard thermal performance metric, such as ΘJA (junction-to-ambient thermal resistance), for specific IC package designs on the basis of limited data. These metrics are in … [Read more...]
- « Previous Page
- 1
- …
- 293
- 294
- 295
- 296
- 297
- …
- 354
- Next Page »
