NDLI: Thermally optimized demagnetization of inductive loads [power IC load switching]

Content Provider	IEEE Xplore Digital Library
Author	Horn, W. Singerl, P.
Copyright Year	2004
Description	Author affiliation: Infineon Technol. Austria AG, Villach, Austria (Horn, W.; Singerl, P.)
Abstract	Switching inductive loads, without free-wheeling diodes, to achieve fast switch-off times, is an important application for integrated smart power circuits. It requires an integrated overvoltage protection and the ability of the integrated circuit to dissipate the energy stored in the inductive load within short periods of time. In this paper, an optimized demagnetization strategy is introduced which allows for switching off large inductive loads quickly without exceeding the critical junction temperature. It is shown that for a given power transistor, the energy capability can be increased by approximately 50% compared to the state-of-the-art switch-off procedure. A circuit implementation is presented which has been implemented on a testchip. Measurement results are shown which demonstrate the advantages of the new approach.
Starting Page	243
Ending Page	246
File Size	292603
Page Count	4
File Format	PDF
ISBN	0780384806
DOI	10.1109/ESSCIR.2004.1356663
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2004-09-23
Publisher Place	Belgium
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Thermal loading Demagnetization Power integrated circuits Switching circuits Circuit testing Diodes Voltage control Protection Temperature Power transistors
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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