NDLI: Practical and accurate pulse-loss-prediction method and its application to switching power supply

Content Provider	IEEE Xplore Digital Library
Author	Yamamura, H.
Copyright Year	2007
Description	Author affiliation: Hitachi Ltd., Kanagawa (Yamamura, H.)
Abstract	Following the decrease of power supply voltage for integrated circuits, the increase of power consumption of information technology systems as well as environmental issues, there is a need to reduce the energy consumption of the systems and the loss of power supply circuits, therefore an accurate and practical loss prediction method is required. This paper describes a new loss prediction method for switching power supply circuits, suited for quick evaluation and comparison of components with accuracy needed for power supply circuit design. A set of Pulse-Loss-Prediction equations was derived in explicit form of elementary functions, from resistive-loss frequency response model and square pulse current model, using Fourier transform and numerical calculation. When the resistance's frequency response of a component is known, its loss can be calculated rapidly and easily against pulse currents of arbitrary period and rise-fall time, in a switching power supply, before actually building one. Transformers' and MOS FETs' resistances are measured, their frequency dependencies are shown, their Pulse-Losses are calculated with the developed method and compared. This method was applied to actual development of a low voltage, high power DC-DC converter for a supercomputer. Component selection, optimization was carried out using this method, and an efficiency of 82% at 1.4 V, 200 A output, 280 V input, was realized. This new power supply gave significant power consumption reduction of the system from conventional model, contributing to initial and running cost reduction, energy saving and environmental conservation and sustainability.
Starting Page	408
Ending Page	414
File Size	172540
Page Count	7
File Format	PDF
ISBN	9781424416271
DOI	10.1109/INTLEC.2007.4448808
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2007-09-30
Publisher Place	Italy
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Pulsed power supplies Power supplies Energy consumption Pulse transformers Circuits Prediction methods Frequency response Pulse measurements Voltage Information technology
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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