NDLI: Power-Supply Volume Reduction via Forced Convection

Content Provider	IEEE Xplore Digital Library
Author	Sirocky, W. F.
Copyright Year	1982
Description	Author affiliation: Bell Telephone Laboratories, Whippany, New Jersey (Sirocky, W. F.)
Abstract	The continuing miniaturization of telecommunications equipment has been unaccompanied by a decrease in the demand for processed power. The result is a decrease in the system volume allocated for power conversion equipment with no corresponding decrease in processed power requirements. Forced-convection cooling of power supplies has traditionally been disregarded for considerations of reliability, efficiency, and acoustics. In light of continuing miniaturization, however, this tradition must be reassessed and any disadvantages must be weighed against potential volume reduction. This study analyzes the thermal performance of typical classes of power components and circuits in order to identify and quantify the thermal parameters that determine power supply volume. The degree of volume reduction possible is governed by the thermal and volumetric topology of the power supply under consideration. Forced convection is least effective for circuits dominated by magnetic components and filter capacitors, and is most amenable to those dominated by power semiconductors. Forced-air cooling of conductively coupled baseplates may be the most volumetrically effective method for cooling power supplies. Design relationships for this application are defined and presented.
Starting Page	152
Ending Page	157
File Size	743948
Page Count	6
File Format	PDF
DOI	10.1109/INTLEC.1982.4793722
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1982-10-03
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Power supplies Cooling Magnetic separation Power conversion Power system reliability Acoustics Performance analysis Circuit topology Magnetic circuits Magnetic semiconductors
Content Type	Text
Resource Type	Article

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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