Journal Article10.1109/TPEL.2013.2292676
LLC Resonant Converter With Matrix Transformer
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TL;DR: In this article, a high-efficiency high power density LLC resonant converter with a matrix transformer is proposed, which can help reduce leakage inductance and the ac resistance of windings so that the flux cancellation method can then be utilized to reduce core size and loss.
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Abstract: In this paper, a high-efficiency high power density LLC resonant converter with a matrix transformer is proposed. A matrix transformer can help reduce leakage inductance and the ac resistance of windings so that the flux cancellation method can then be utilized to reduce core size and loss. Synchronous rectifier (SR) devices and output capacitors are integrated into the secondary windings to eliminate termination-related winding losses, via loss and reduce leakage inductance. A 1 MHz 390 V/12 V 1 kW LLC resonant converter prototype is built to verify the proposed structure. The efficiency can reach as high as 95.4%, and the power density of the power stage is around 830 W/in3.
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Citations
Three-Phase Interleaved Bidirectional LLC Resonant Converter with Vertically Integrated Magnetics
Junyang Bao,Yong Li,Shanxu Duan,Bangyin Liu +3 more
- 25 Feb 2024
Unraveling the Potential of Matrix Transformers in High-Current Low-Voltage Applications
Jannik Schäfer,Johann W. Kolar +1 more
- 24 Jun 2024
TL;DR: This paper explores the application of matrix transformers in high-current low-voltage power electronics, investigating their advantages over conventional designs, and providing a comprehensive analysis of their electromagnetic behavior and practical design suggestions for enhanced efficiency and power density.
Two-Stage 48 V-12 V/6 V-1.8 V Voltage Regulator Module With Dynamic Bus Voltage Control for Light-Load Efficiency Improvement
TL;DR: In this article, the authors proposed to change the primary side of LLC converter from the full-bridge (FB) configuration into the half-bridge configuration dynamically in the light-load condition, so that the output of the LLC dc transformer (DCX) can be changed from 12 to 6V.
Integrated Magnetic Design for High Power Density Converter
Pinhe Wang,Asier Arruti,Jiung-Yao Huang,Tiberiu‐Gabriel Zsurzsan,Michael A. E. Andersen,Ziwei Ouyang +5 more
- 25 Feb 2024
TL;DR: High power density and high efficiency two-stage DC/DC converter for datacenter applications using integrated magnetic design.
Dual-output, three-level GaN-based dc-dc converter for battery charger applications
Ren Ren,Bo Liu,Edward A. Jones,Fred Wang,Zheyu Zhang,Daniel Costinett +5 more
- 20 Mar 2016
TL;DR: In this article, a three-level dc-dc converter with dual outputs based on enhancement-mode GaN devices, intended for use as a battery charger in aircraft applications, is presented.
References
LLC resonant converter for front end DC/DC conversion
Bo Yang,Fred C. Lee,A.J. Zhang,Guisong Huang +3 more
- 07 Aug 2002
TL;DR: In this article, a LLC resonant converter is proposed for front end DC/DC conversion in a distributed power system, which utilizes leakage and magnetizing inductance of a transformer.
Three-level LLC series resonant DC/DC converter
TL;DR: In this article, a three-level soft switching LLC series resonant dc/dc converter is presented, which achieves zero-voltage switching (ZVS) for each main switch without any auxiliary circuit.
320
Zero-voltage and zero-current-switching full bridge PWM converter for high power applications
Jung-Goo Cho,J.A. Sabate,Guichao Hua,Fred C. Lee +3 more
- 20 Jun 1994
TL;DR: In this paper, a zero-voltage and zero-current-switching (ZVZCS) full-bridge (FB) PWM converter is proposed to overcome the limitations of the ZVS-FB-PWM converter such as high circulating energy, loss of duty cycle, and limited ZVS load range for the lagging-leg switches.
319
Analytical Loss Model of High Voltage GaN HEMT in Cascode Configuration
TL;DR: In this article, the authors presented an accurate analytical model to calculate the power loss of a high voltage Gallium Nitride high electron mobility transistor (GaN HEMT) in cascode configuration.
276
Integrated magnetic for LLC resonant converter
Bo Yang,Rengang Chen,Fred C. Lee +2 more
- 07 Aug 2002
TL;DR: In this article, a new LLC resonant converter is proposed for front end DC/DC conversion in a distributed power system, which shows some potential benefits in this application, such as reduced number of components, flux ripple cancellation, and higher power density.
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