NDLI: A novel heat sink design for low speed flows-a BGA example

Content Provider	IEEE Xplore Digital Library
Author	Tavassoli, B.
Copyright Year	2000
Description	Author affiliation: Adv. Thermal Solutions Inc., Norwood, MA, USA (Tavassoli, B.)
Abstract	The ongoing trend in designing electronic systems is to incorporate increased functionality into ever smaller form factors. In addition, the power dissipation from most IC devices continues to increase. Additional design constraints, such as reducing system acoustic noise and weight, are also becoming more prevalent. The combined effect of all these trends is to create increasingly challenging thermal management situations that demand more efficient heat sinks and optimized designs. In this paper a new class of heat sinks are presented and their performance is compared to Airflow conventional heat sinks. MaxiFlow/sup TM/ heat sinks feature very thin, high ratio fins that radiate at various angles from the base. The result is a very low resistance to airflow and very high efficiency of heat dissipation, especially at low airspeeds. They are also very light in weight, allowing for simple attachment methods and weight savings. To aid in designing thermal solutions that utilize these heat sinks, an analytical model has been developed to predict the thermal resistance as a function of airflow velocity for unducted flow for a conventional design. The improvements of the new design compared to the conventional design will be discussed.
Starting Page	16
Ending Page	20
File Size	278997
Page Count	5
File Format	PDF
ISBN	0780359127
ISSN	10899870
DOI	10.1109/ITHERM.2000.866164
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2000-05-23
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Heat sinks Thermal resistance Thermal management Resistance heating Power dissipation Acoustic noise Power system management Cogeneration Design optimization Analytical models
Content Type	Text
Resource Type	Article

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