Journal Article10.1109/TCSI.2007.902482
Nonisolation Soft-Switching Buck Converter With Tapped-Inductor for Wide-Input Extreme Step-Down Applications
Joung-Hu Park,Bo-Hyung Cho +1 more
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TL;DR: This converter improves the conventional tapped inductor critical conduction mode buck converters that have the ZVS operation range determined by the TI turn ratios and includes another soft switching range extension method, the current injection method, which gives additional design freedom for the selection of the turn-ratios.
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Abstract: In this paper, a new zero-voltage switching (ZVS) buck converter with a tapped inductor (TI) is proposed. This converter improves the conventional tapped inductor critical conduction mode buck converters that have the ZVS operation range determined by the TI turn ratios. It includes another soft switching range extension method, the current injection method, which gives an additional design freedom for the selection of the turn-ratios and enables the optimal design of the winding ratio of the TI so that the efficiency may be maximized. This soft-switching buck converter is suitable for wide input range step-down applications. The principle of the proposed scheme, analysis of the operation, and design guidelines are included. Experimental results of the 100-W prototype dc-dc converter are given for hardware verification also. Finally, based on the proposed soft-switching technique, a new soft-switching topology family is derived.
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Citations
Analysis and implementation of a bidirectional converter with high conversion ratio
Bor-Ren Lin,J.-J. Chen,F.-Y. Hsieh +2 more
- 21 Apr 2008
TL;DR: A biddirectional dc converter with high conversion ratio is presented in this paper to have the capability of bidirectional power flow and to reduce the switching losses and limit the voltage stress on the power switch.
High step-down dc–dc converter with low voltage stress and wide soft-switching range
TL;DR: In this paper, the buck converter with Cuk converter is integrated to achieve a non-isolated high step-down dc-dc converter with zero current switching and zero voltage switching condition for the converter switches at turn-on and turn-off.
References
A zero-voltage-switching bidirectional battery charger/discharger for the NASA EOS satellite
Dan M. Sable,F.C. Lee,Bo-Hyung Cho +2 more
- 23 Feb 1992
TL;DR: In this paper, the buck and boost topology was employed for the zero-voltage-switching (ZVS) bidirectional converter for the NASA EOS (Earth Observing System) satellite.
130
Comparison of three topology candidates for 12 V VRM
Jia Wei,Peng Xu,H.-P. Wu,Fred C. Lee,Kaiwei Yao,M. Ye +5 more
- 04 Mar 2001
TL;DR: In this article, a comparison of three 12 V VRM topology candidates: buck, tapped-inductor buck, and active-clamp couple-buck is presented, focusing primarily on the comparison of buck and tapped-induction buck.
126
Investigation of candidate topologies for 12 V VRM
Peng Xu,Jia Wei,Kaiwei Yao,Yu Meng,Fred C. Lee +4 more
- 07 Aug 2002
TL;DR: In this paper, the influence of duty cycle on the performance of a multiphase buck converter is investigated and the results show that both the transient response and the efficiency suffer from the very small duty cycle.
100
Static and dynamic modeling of tapped-inductor dc-to-dc converters
M. Rico,J. Uceda,Javier Sebastian,F. Aldana +3 more
- 21 Jun 1987
TL;DR: In this paper, the influence of the tapped inductor turn ratio (λ) is analyzed in dc-to-dc converters derived from buck, boost and buck-boost topologies.
95
Active-clamp DC/DC converters using magnetic switches
Qun Zhao,Fengfeng Tao,Yongxuan Hu,Fred C. Lee +3 more
- 04 Mar 2001
TL;DR: In this article, a family of high-efficiency, high step-up DC/DC power converters is proposed, which use diodes and coupled windings instead of active switches to realize clamp functions.
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