Introduction Modern electronics are rapidly evolving to meet high-computing needs while shrinking in size resulting in large heat fluxes that must be removed for safe operation. Figure 1 shows a schematic of a generic electronics cooling system with representative heat transfer pathway from a chip (heat source) to a cold plate (heat sink) via heat spreaders and card retainers … [Read more...]
Calculating Thermal Design Power for Mobile Consumer Electronics – Part 2
Overview Thermal Design Power (TDP) is a term commonly used in the thermal management of consumer electronics. While the usage of this terminology may vary across the industry, it commonly refers to the amount of power that a device may dissipate indefinitely, in a given thermal environment, without exceeding the temperature limits of the device. The TDP for a consumer … [Read more...]
Thermal Management and Safety Regulation of Smart Watches
ABSTRACT A smartwatch is one of the most popular wearable devices now. Along with battery life and security, thermal safety is the most common concern. We show how to meet ergonomic standards for users and predict thermal performance in typical scenarios. Thermal simulation software applied at the design stage can provide guidance on the use of heat-spreading materials and … [Read more...]
Electronics Cooling Sanity Check
Introduction A number of years ago I attended a meeting at Purdue University to discuss future challenges and goals for electronics cooling research. One topic that generated a significant amount of interest was, what magnitude of heat flux represented a substantial challenge that the electronics cooling community should be striving to meet with new developments. The closest … [Read more...]
Transient Thermal Calculations for Skin Contact by Wearable Devices
Introduction Mobile and wearable electronic devices are truly ubiquitous these days. Thermal engineers involved in the design of these devices are not only attentive to managing the temperature of the various components within these devices, but they are also careful to ensure that the temperature on the outer shell of these devices never exceeds certain limits as specified in … [Read more...]
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