NDLI: Zero-voltage-switching technique in high-frequency off-line converters

Content Provider	IEEE Xplore Digital Library
Author	Jovanovic, M.M. Tabisz, W.A. Lee, F.C.
Copyright Year	1988
Description	Author affiliation: Dept. of Electr. Eng., Virginia Polytech. Inst. & State Univ., Blacksburg, VA, USA (Jovanovic, M.M.; Tabisz, W.A.; Lee, F.C.)
Abstract	Zero-voltage switching (ZVS) is implemented using a half-bridge (HB) topology for high-frequency offline applications. Two ZVS techniques are discussed: one is a quasiresonant technique (QRC) the other a multiresonant technique (MRC). A breadboarded HB ZVS-QRC is presented which operates from a 300+or-50 V input with maximum output power of 75 W (5 V, 15 A) and an efficiency of 83.5% at low line and full load and 79.2% at high line and full load. In ZVS-MRCs, all semiconductor devices are operated with no abrupt changes of the voltage across the devices. The technique permits utilization of junction capacitances of all semiconductor devices and the transformer leakage inductance to form a multiple-resonant-tank network to implement zero-voltage switching for all semiconductor devices. Employing this technique, a HB ZVS-MRC is breadboarded with the same specifications as the HB ZVS-QRC. The efficiency of the HB ZVS-MRC is slightly lower than that of the HB ZVS-QRC, 81.7% at full load and low line and 78.5% at full load and high line.<>
Starting Page	23
Ending Page	32
File Size	629244
Page Count	10
File Format	PDF
DOI	10.1109/APEC.1988.10547
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1988-02-01
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Zero voltage switching Switches Frequency conversion Topology Semiconductor diodes Transient response MOSFETs Switching frequency Capacitance Switching converters
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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