Introduction As electronic products become more sophisticated and design margins tighten, defining the thermal management strategy early in the design cycle is vital to ensure a cost-effective design for the level of heat dissipation. Optimizing the cooling system for an electronic product can involve juggling many design parameters, such as airflow rate, fan and vent … [Read more...]
CFD Simulations in Electronic Systems: A Lot of Pitfalls and a Few Remedies
Introduction In the past 15 years, we have observed a significant increase in the use of Computational Fluid Dynamics (CFD) codes to calculate the thermal behavior of electronic systems. The benefits are undisputed when it comes to performing parametric studies in early design phases. However, when the objective is accuracy, the discussion about what we can expect in practice … [Read more...]
"Revolutionary" New Thermal Management Materials
Editors tend to frown on use of "revolutionary" in technical papers. However, advances in thermal management material properties in the last few years clearly warrant this word. There are now over a dozen materials with low coefficients of thermal expansion (CTEs) and thermal conductivities higher than that of copper (400 W/m K), and a score with thermal conductivities at least … [Read more...]
Solve Thermal Issues Earlier in Updated Board Designs
Introduction Often new products or product concepts only introduce some new aspects and rely heavily on existing designs. At the board level this often means only one section of a board is retooled or upgraded; an approach that can save significant time and money. Unfortunately, we cannot rely solely on previous work because the interaction of old functions and new features … [Read more...]
Server Design Challenges for the High-heat-load Internet Data Center
Introduction Microprocessor and system thermal management are linked to facility cooling: power dissipation and cooling techniques employed at one end of the size scale have cascading impacts at the other extreme (Figure 1). For example, ineffective airflow distribution or insufficient underfloor static pressure in a data center can reduce the supply airflow rate from … [Read more...]
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