100 MHz isolated DC-DC resonant converter using spiral planar PCB transformer

This paper describes a very high frequency (VHF) isolated dc-dc resonant converter operating at 100 MHz switching frequency with a rated output power of 2 W. The power stage consists of two half-bridge GaN chips with integrated gate drivers, one operating as a dc-ac inverter on the primary side, the other operating as an ac-dc synchronous rectifier on the secondary side. Isolation is provided by a spiral planar printed circuit board (PCB) transformer designed and optimized using 3D finite element modeling (FEM) tools and radio-frequency (RF) circuit design software. Simulation and experimental results are presented for a prototype step-down converter operating from 20 V input voltage. Experimental results show a peak efficiency of 80.5% at 1.8 W output power.

[1]  H. B. Kotte,et al.  High frequency half-bridge converter using multilayered coreless Printed Circuit Board step-down power transformer , 2011, 8th International Conference on Power Electronics - ECCE Asia.

[2]  D. J. Perreault,et al.  Optimization of Integrated Transistors for Very High Frequency DC–DC Converters , 2013, IEEE Transactions on Power Electronics.

[3]  D. Boroyevich,et al.  Reduction of high-frequency conduction losses using a planar litz structure , 2005, IEEE Transactions on Power Electronics.

[4]  Henry Shu-Hung Chung,et al.  Coreless planar printed-circuit-board (PCB) transformers-a fundamental concept for signal and energy transfer , 2000 .

[5]  Chi Kwan Lee,et al.  On the relationship of quality factor and hollow winding structure of coreless printed spiral winding (CPSW) inductor , 2012, IEEE Transactions on Power Electronics.

[6]  T. Reveyrand,et al.  High-Efficiency Harmonically Terminated Diode and Transistor Rectifiers , 2012, IEEE Transactions on Microwave Theory and Techniques.

[7]  D.J. Perreault,et al.  Very High Frequency Resonant Boost Converters , 2007, 2007 IEEE Power Electronics Specialists Conference.

[8]  Y. Perriard,et al.  FEM modeling of skin and proximity effects for coreless transformers , 2012, 2012 15th International Conference on Electrical Machines and Systems (ICEMS).

[9]  Xiaodong Li,et al.  Analysis and Design of High-Frequency Isolated Dual-Bridge Series Resonant DC/DC Converter , 2010, IEEE Transactions on Power Electronics.

[10]  Fan Li,et al.  A Novel Transformer Structure for High power, High Frequency converter , 2007, 2007 IEEE Power Electronics Specialists Conference.

[11]  Reinel Marante,et al.  GaN HEMT Class E 2 Resonant Topologies for UHF DC / DC Power Conversion , 2022 .

[12]  H. B. Kotte,et al.  High-Speed (MHz) Series Resonant Converter (SRC) Using Multilayered Coreless Printed Circuit Board (PCB) Step-Down Power Transformer , 2013, IEEE Transactions on Power Electronics.

[13]  Dragan Maksimovic,et al.  Zero Voltage Switching Technique for Bidirectional DC/DC Converters , 2014, IEEE Transactions on Power Electronics.

[14]  D. Perreault,et al.  Design Considerations for Very High Frequency dc-dc Converters , 2006 .

[15]  Yan-Fei Liu,et al.  A 30-MHz isolated push-pull VHF resonant converter , 2014, 2014 IEEE Applied Power Electronics Conference and Exposition - APEC 2014.

[16]  David J. Perreault,et al.  Transformer synthesis for VHF converters , 2010, The 2010 International Power Electronics Conference - ECCE ASIA -.

[17]  Hua Bai,et al.  Eliminate Reactive Power and Increase System Efficiency of Isolated Bidirectional Dual-Active-Bridge DC–DC Converters Using Novel Dual-Phase-Shift Control , 2008, IEEE Transactions on Power Electronics.

[18]  D.J. Perreault,et al.  New Architectures for Radio-Frequency DC – DC Power Conversion , 2006 .

[19]  Dragan Maksimovic,et al.  Voltage regulation and efficiency optimization in a 100 MHz series resonant DC-DC converter , 2015, 2015 IEEE Applied Power Electronics Conference and Exposition (APEC).

[20]  Dragan Maksimovic,et al.  High-frequency integrated gate drivers for half-bridge GaN power stage , 2014, 2014 IEEE 15th Workshop on Control and Modeling for Power Electronics (COMPEL).

[21]  Robert W. Erickson,et al.  Fundamentals of Power Electronics , 2001 .

[22]  D. Maksimović,et al.  High-Frequency PWM Buck Converters Using GaN-on-SiC HEMTs , 2014, IEEE Transactions on Power Electronics.

[23]  R. Marante,et al.  GaN HEMT Class ${\hbox{E}}^{2}$ Resonant Topologies for UHF DC/DC Power Conversion , 2012, IEEE Transactions on Microwave Theory and Techniques.

[24]  D.J. Perreault,et al.  New architectures for radio-frequency DC/DC power conversion , 2004, 2004 IEEE 35th Annual Power Electronics Specialists Conference (IEEE Cat. No.04CH37551).

[25]  Wei Liang,et al.  13.56 MHz High Density DC–DC Converter With PCB Inductors , 2013, IEEE Transactions on Power Electronics.

[26]  R. Marante,et al.  A 1 GHz frequency-controlled class E2 DC/DC converter for efficiently handling wideband signal envelopes , 2013, 2013 IEEE MTT-S International Microwave Symposium Digest (MTT).

[27]  C. Sourkounis,et al.  Design and analysis of different structure of a coreless planar transformer for a flyback converter , 2012, International Symposium on Power Electronics Power Electronics, Electrical Drives, Automation and Motion.

[28]  W. G. Hurley,et al.  Calculation of self and mutual impedances in planar magnetic structures , 1995 .

[29]  H. Chung,et al.  A low-profile power converter using printed-circuit board (PCB) power transformer with ferrite polymer composite , 2001 .

[30]  Dragan Maksimovic,et al.  100 MHz, 20 V, 90% efficient synchronous buck converter with integrated gate driver , 2014, 2014 IEEE Energy Conversion Congress and Exposition (ECCE).

[31]  Khurram K. Afridi,et al.  High efficiency resonant dc/dc converter utilizing a resistance compression network , 2013, 2013 Twenty-Eighth Annual IEEE Applied Power Electronics Conference and Exposition (APEC).

[32]  Luke Raymond,et al.  27.12 MHz large voltage gain resonant converter with low voltage stress , 2013, 2013 IEEE Energy Conversion Congress and Exposition.

[33]  R. S. Pengelly,et al.  A Review of GaN on SiC High Electron-Mobility Power Transistors and MMICs , 2012, IEEE Transactions on Microwave Theory and Techniques.

[34]  Praveen Jain,et al.  High frequency analysis of an integrated planar transformer with common mode EMI suppression capability , 2013, 2013 IEEE Energy Conversion Congress and Exposition.