Isolated fully soft-switched flyback converter with low voltage stress

Henry Chung; S. Y R Hui; W. H. Wang

doi:10.1109/PESC.1997.616953

Isolated fully soft-switched flyback converter with low voltage stress

City University of Hong Kong

Research output: Chapters, Conference Papers, Creative and Literary Works › RGC 32 - Refereed conference paper (with host publication) › peer-review

12 Citations (Scopus)

Abstract

An isolated fully soft-switched PWM flyback converter topology with low switch voltage stress is proposed. The converter features the use of the leakage inductance of the `flyback' coupled inductors to achieve zero-voltage switching (ZVS) and/or zero-current switching (ZCS) of all switching devices. The method of implementation is simply to add an additional auxiliary circuit, consisting of a switched LC circuit to the conventional PWM flyback converter. No extra active or passive voltage clamp circuit is needed to suppress voltage stress on the switching devices. A complete steady-state dc analysis and the operating principle will be described. The performance of a 80 W experimental converter prototype with dual output voltages is presented.

Original language	English
Title of host publication	PESC Record - IEEE Annual Power Electronics Specialists Conference
Pages	1417-1423
Volume	2
DOIs	https://doi.org/10.1109/PESC.1997.616953
Publication status	Published - 1997
Event	Proceedings of the 1997 28th Annual IEEE Power Electronics Specialists Conference, PESC. Part 1 (of 2) - St.Louis, CA, USA Duration: 23 Jun 1997 → 26 Jun 1997

Publication series

Name
Volume	2
ISSN (Print)	0275-9306

Conference

Conference	Proceedings of the 1997 28th Annual IEEE Power Electronics Specialists Conference, PESC. Part 1 (of 2)
City	St.Louis, CA, USA
Period	23/06/97 → 26/06/97

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title = "Isolated fully soft-switched flyback converter with low voltage stress",

abstract = "An isolated fully soft-switched PWM flyback converter topology with low switch voltage stress is proposed. The converter features the use of the leakage inductance of the `flyback' coupled inductors to achieve zero-voltage switching (ZVS) and/or zero-current switching (ZCS) of all switching devices. The method of implementation is simply to add an additional auxiliary circuit, consisting of a switched LC circuit to the conventional PWM flyback converter. No extra active or passive voltage clamp circuit is needed to suppress voltage stress on the switching devices. A complete steady-state dc analysis and the operating principle will be described. The performance of a 80 W experimental converter prototype with dual output voltages is presented.",

author = "Henry Chung and Hui, {S. Y R} and Wang, {W. H.}",

year = "1997",

doi = "10.1109/PESC.1997.616953",

language = "English",

isbn = "780338405",

volume = "2",

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booktitle = "PESC Record - IEEE Annual Power Electronics Specialists Conference",

note = "Proceedings of the 1997 28th Annual IEEE Power Electronics Specialists Conference, PESC. Part 1 (of 2) ; Conference date: 23-06-1997 Through 26-06-1997",

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Chung, H , Hui, SYR & Wang, WH 1997, Isolated fully soft-switched flyback converter with low voltage stress. in PESC Record - IEEE Annual Power Electronics Specialists Conference. vol. 2, pp. 1417-1423, Proceedings of the 1997 28th Annual IEEE Power Electronics Specialists Conference, PESC. Part 1 (of 2), St.Louis, CA, USA, 23/06/97. https://doi.org/10.1109/PESC.1997.616953

TY - GEN

T1 - Isolated fully soft-switched flyback converter with low voltage stress

AU - Chung, Henry

AU - Hui, S. Y R

AU - Wang, W. H.

PY - 1997

Y1 - 1997

N2 - An isolated fully soft-switched PWM flyback converter topology with low switch voltage stress is proposed. The converter features the use of the leakage inductance of the `flyback' coupled inductors to achieve zero-voltage switching (ZVS) and/or zero-current switching (ZCS) of all switching devices. The method of implementation is simply to add an additional auxiliary circuit, consisting of a switched LC circuit to the conventional PWM flyback converter. No extra active or passive voltage clamp circuit is needed to suppress voltage stress on the switching devices. A complete steady-state dc analysis and the operating principle will be described. The performance of a 80 W experimental converter prototype with dual output voltages is presented.

AB - An isolated fully soft-switched PWM flyback converter topology with low switch voltage stress is proposed. The converter features the use of the leakage inductance of the `flyback' coupled inductors to achieve zero-voltage switching (ZVS) and/or zero-current switching (ZCS) of all switching devices. The method of implementation is simply to add an additional auxiliary circuit, consisting of a switched LC circuit to the conventional PWM flyback converter. No extra active or passive voltage clamp circuit is needed to suppress voltage stress on the switching devices. A complete steady-state dc analysis and the operating principle will be described. The performance of a 80 W experimental converter prototype with dual output voltages is presented.

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U2 - 10.1109/PESC.1997.616953

DO - 10.1109/PESC.1997.616953

M3 - RGC 32 - Refereed conference paper (with host publication)

SN - 780338405

VL - 2

SP - 1417

EP - 1423

BT - PESC Record - IEEE Annual Power Electronics Specialists Conference

T2 - Proceedings of the 1997 28th Annual IEEE Power Electronics Specialists Conference, PESC. Part 1 (of 2)

Y2 - 23 June 1997 through 26 June 1997

ER -

Isolated fully soft-switched flyback converter with low voltage stress

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