## Queen's Power Group Publications

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## Journal Papers

[J81] Y. Zhang, J. Liu, X. Li, X. Ma, S. Zhou, H. Wang, Y. F. Liu, "**An Improved PWM Strategy for Z-Source Inverter With Maximum Boost Capability and Minimum Switching Frequency**," IEEE Transactions on Power Electronics, Vol. 33, No. 1, Januray 2018, pp 606-608.

[J80] H. Wang, Y. Chen, Y. Qiu, P. Fang, Y. Zhang, L. Wang, Y. F. Liu, J. Afsharian and Z. Yang, "**Common Capacitor Multiphase LLC Converter With Passive Current Sharing Ability**," IEEE Transactions on Power Electronics, Vol. 33, No. 1, Januray 2018, pp 370-387.

[J79] H. Wang, Y. Chen, and Y. F. Liu, "**A Passive-Impedance-Matching Technology to Achieve Automatic Current Sharing for Multi-Phase Resonant Converter**," IEEE Transactions on Power Electronics, Vol. 32, No. 12, December 2017, pp. 9191-9209.

[78] L. Jia and Y. F. Liu, "**Topology and Control Innovation for Auxiliary Power Supply in Dimmable LED Drivers**," IEEE Transactions on Power Electronics, Vol. 32,No. 11, November 2017, pp. 8728-8742.

[J77] L. Jia, L. Srikanth, X. Lin and Y. F. Liu, " **New Modeling Method and Design Optimization for a Soft-Switched DC-DC Converter**," IEEE Transactions on Power Electronics, Vol. , No. , September 2017, pp (early access).

[J76] H. Wang, L. Kou, Y. F. Liu, and P. C. Sen, "**A New Six-Switch Five-Level Active Neutral Point Clamped Inverter for PV Applications**," IEEE Transactions on Power Electronics, Vol. 32, No. 9, September 2017, pp. 6700-6715.

[J75] H. Wang, Y. Chen, Y. F. Liu, J. Afsharian, and Z. Yang, "**A Passive Current Sharing Method with Common Inductor Multi-Phase LLC Resonant Converter**," IEEE Transactions on Power Electronics, Vol. 32, No. 9, September 2017, pp. 6994-7010.

[J74] Y. Zhang, J. Liu, Z. Dong, H. Wang, Y. F. Liu, "**Dynamic Performance Improvement of Diode-capacitor Based High Step-up DC-DC Converter Through Right-half-plane Zero Elimination**," IEEE Transactions on Power Electronics, Vol. 32, No. 8, August 2017. pp 6532 - 6543.

[J73] H. Wang, L. Kou, Y. F. Liu, and P. Sen, "**A Seven-Switch Five-Level Active-Neutral-Point-Clamped Converter and Its Optimal Modulation Strategy**," IEEE Transactions on Power Electronics, Vol. 32, No. 7, July 2017, pp. 5146-5161.

[J72] Y. Zhang, J. Liu, Z. Dong, Y. Jia, C. Nie, S. Zhou and Y. F. Liu, "**Maximum Boost Control of Diode-Assisted Buck Boost Voltage-Source Inverter with Minimum Switching Frequency**," IEEE Transactions on Power Electronics, Vol. 32, No. 2, February 2017, pp. 1533-1547.

[71] H. Wang, Y. Chen, P. Fang, Y. F. Liu, J. Afsharian, and Z. Yang, "An LLC Converter family with Auxiliary Switch for Hold Up Mode Operation," IEEE Transactions on Power Electronics, Vol. 32, No. 6, August 2016, pp. 4291-4306.

[J70] P. Fang, Y. Qiu, H. Wang, and Y. F. Liu, "**A Single Stage Primary Side Controlled Offline Flyback LED Driver with Ripple Cancellation**," IEEE Transactions on Power Electronics, Vol. 32, No. 6,August 2016, pp. 4700-4715.

[J69] Z. Hu, L. Wang, H. Wang, Y.F. Liu and P. C. Sen, "**An Accurate Design Algorithm for LLC Resonant Converters-Part I**," IEEE Transactions on Power Electronics, Vol. 30, No. 8, August 2016, pp. 5435-5447.

[J68] Z. Hu, L. Wang, H. Wang, Y.F. Liu and P. C. Sen, "**An Accurate Design Algorithm for LLC Resonant Converters-Part II**," IEEE Transactions on Power Electronics, Vol. 30, No. 8, August 2016, pp. 5448-5460.

[J67] P. Fang and Y. F. Liu, "**An Energy Channeling LED Driver Technology to Achieve Flicker-Free Operation with True Single Stage Power Factor Correction**," IEEE Transactions on Power Electronics, Vol. 32, No. 5, June 2016 pp. 3892-3907.

[J66] M. D. Xu and Y. F. Liu, "**Editorial Special Issue on Green Power Supplies**," IEEE Journal of Emerging and Selected Topics in Power Electronics, June 2016, Vol. 4, No. 2, pp. 333-334.

[J65] Z. Zhang, Y. Y. Cai, Y. Zhang, D. J. Gu, and Y. F. Liu, "**A Distributed Architecture Based on Microbank Modules with Self-Reconfiguration Control to Improve the Energy Efficiency in the Battery Energy Storage System**," IEEE Transactions on Power Electronics, Vol. 31, No. 1, January 2016, pp. 304-317.

[J64] L. Wang, Y. Qiu, H. Wang, Z. Hu and Y.F. Liu, "**A New Model for Designing Multiwindow Multipermeability Nonlinear LTCC Inductors**," IEEE Transcations on Industry Applications, Vol. 51, No. 6, December 2015, pp4677-4687.

[J63]A. Dickson, S. Burton, M. Shepertycky, Y.F. Liu and Q. Li, "**Digitally Controlled Energy Harvesting Power Management System**," IEEE Journal of Emerging and Selected Topics in Power Electronics, Vol. 4, No. 1, Oct.2015, pp.303-317.

[J62]B. White, H. Wang, Y.F. Liu and X. Liu, **"An Average Current Modulation Method for Single-Stage LED Drivers With High Power Factor and Zero Low-Frequency Current Ripple**,**"** IEEE Journal of Emerging and Selected Topics in Power Electronics, Vol. 3, No. 3, September.2015, pp.714-731.

[J61]P. Fang, Y.F. Liu and P. C. Sen, **"A Flicker-Free Single-Stage Offline LED Driver With High Power Factor**,**"** IEEE Journal of Emerging and Selected Topics in Power Electronics, Vol. 3, No. 3, September.2015, pp.654-665.

[J60] Y. Qiu, L. Wang, H. Wang, Y.F. Liu and P. C. Sen, **"Bipolar Ripple Cancellation Method to Achieve Single-Stage Electrolytic-Capacitor-Less High-Power LED Driver**,**"** IEEE Journal of Emerging and Selected Topics in Power Electronics, Vol. 3, No. 3, September. 2015, pp.698-703.

[J59] Z. Hu, Y.F. Liu and P. C. Sen, **"Bang-Bang Charge Control for LLC Resonant Converters**,**"** IEEE Transactions on Power Electronics, Vol. 30, No. 2, February 2015. pp. 1093-1108.

[J58] Z. Hu, Y. Qiu, Y.F. Liu and P.C.Sen,** "****A Control Strategy and Design Method for Interleaved LLC Converters Operating at Variable Switching Frequency**,**" **IEEE Trans. Power Electron. Vol. 29, No. 8, August 2014. pp. 4426-4437.

[J57] Z. Zhang, F.F Li, Y.F. Liu, , "**A High Frequecy Dual-Channel Isolated Resonant Gate Driver with Low Gate Drive Loss for ZVS Full-Bridge Converters**," IEEE Transactions on Power Electronics, Vol. 29,No. 6, June 2014.pp.3077 - 3090.

[J56] Z. Hu, Y. Qiu, L. Wang and Y.F. Liu, "**An Interleaved LLC Resonant Converter Operating at Constant Switching Frequency,**"IEEE Transactions on Power Electronics, Vol. 29, No. 6, June. 2014. pp.2931-2943.

[J55] Z. Hu, Y.F. Liu, T.H. Yeap and L. Ge, "**A Communication Protocol with Data Compression for Isolated Digital Power Supplies**," IEEE Transactions on Power Electronics, Vol. 29, No. 4, April 2014. pp. 2109-2123.

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[J54] D. Wang, Y.F. Liu, "**A Zero-Crossing Noise Filter for Driving Synchronous Rectifiers of LLC Resonant Converter**," IEEE Transactions on Power Electronics, Vol. 29, No. 4, April 2014. pp. 1953-1965.

[J53] Z. Zhang, C. Xu, Y.F. Liu, "**A Digital Adaptive Discontinuous Current Source Driver for High Frequency Interleaved Boost PFC Converters**," IEEE Transactions on Power Electronics, Vol. 29, No. 3, March 2014. pp. 1298-1310

[J52] Z. Zhang, X.F. He and Y.F. Liu, "**An Optimal Control Method for Photovoltaic Grid-Tied-Interleaved Flyback Microinverters to Achieve High Efficiency in Wide Load Range**," IEEE Transactions on Power Electronics, Vol. 28, No. 11, Nov. 2013. pp. 5074-5087

[J51] W. Fang, X.D. Liu and Y.F. Liu, "**An New Digital Control Algorithm for Dual-Transistor Forward Converter**" IEEE Transactions on Power Electronics, Vol. 9, No. 4, Nov. 2013. pp. 2074-2081

[J50] L. Wang, Z. Hu, Y.F. Liu, Y. Pei and X. Yang, **"****Multipermeability Inductors for Increasing the Inductance and Improving the Efficiency of High-Frequency Converters**," IEEE Transactions on Power Electronics, Vol. 28, No. 9, Sept. 2013. pp. 4402-4413.

[J49] L. Wang, Z. Hu and Y.F. Liu, Y. Pei, X. Yang, Z. Wang, "**A Horizontal-Winding Multipermeability LTCC Inductor for a Low-profile Hybrid DC/DC Converter,**" IEEE Transactions on Power Electronics, Vol. 28, No. 9, Sept. 2013. pp. 4365-4375.

[J48] Z. Zhang, P. Xu and Y.F. Liu, **"Adaptive Continuous Current Source Drivers for 1-MHz Boost PFC Converters,"** IEEE Transactions on Power Electronics, Vol. 28, No. 5, May. 2013, pp. 2457-2467.

[J47] L. Jia and Y.F. Liu, "**Low Cost Microcontroller Based Implementation of Robust Voltage Based Capacitor Charge Balance Control Algorithm**,"IEEE Transactions on Industrial Informatics, Vol. 9, No. 2, May 2013. pp. 869-879.

[J46] L. Jia, Z. Hu, Y.F. Liu and P.C. Sen, **"****Predictable Auxiliary Switching Strategy to Improve Unloading Transient Response Performance for DC-DC Buck Converter,****"** IEEE Transactions on Industrial Applications, Vol. 49, No. 2, March/April 2013. pp. 931-941.

[J45] L. Jia and Y.F. Liu, **"****Voltage-Based Charge Balance Controller Suitable for Both Digital and Analog Implementation,****"** IEEE Transactions on Power Electronics, Vol. 28, No. 2, Feb. 2013, pp. 930-944

[J44] E. Meyer and Y.F. Liu, "**Digital Charge Balance Controller With an Auxiliary Circuit for Improved Unloading Transient Performance of Buck Converters,****"** IEEE Transactions on Power Electronics, Vol. 28, No. 1, Jan. 2013, pp. 357-370

[J43] A. Elnady, Y.F. Liu, **"****A Practical Solution for the Current and Voltage Fluctuation in Power Systems"**, IEEE Transactions on Power Delivery, Vol. 27, No. 3, July 2012. pp. 1339-1349.

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[J42] Z. Zhang, J. Fu, Y.F. Liu and P.C. Sen, "**Adaptive Current Source Drivers for Efficiency Optimization of High-Frequency Synchronous Buck Converters,**" IEEE Transactions on Power Electronics, Vol. 27, No. 5, May. 2012, pp. 2462-2470

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[J41] E. Meyer, Z. Zhang and Y.F. Liu, "**Digital Charge Balance Controller to Improve the Loading/Unloading Transient Response of Buck Converters**," IEEE Transactions on Power Electronics, Vol. 27, No. 3, March. 2012, pp. 1314-1326

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[J40] J. Fu, Z. Zhang, Y.F. Liu, P.C. Sen and L.S. Ge, "**A New High Efficiency Current Source Driver With Bipolar Gate Voltage,**" IEEE Transactions on Power Electronics , Vol. 27, No. 2, Feb. 2012, pp. 985-997

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[J39] J. Fu, Z. Zhang, Y.F. Liu and P.C.Sen, "**MOSFET Switching Loss Model and Optimal Design of Current Source Driver Considering the Current Diversion Problem,**" IEEE Transactions on Power Electronics, Vol. 27, No. 2, Feb. 2012, pp. 998-1012

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[J38] Z. Zhang, J. Fu, Y.F. Liu and P.C. Sen, "**Switching Loss Analysis Considering Parasitic Loop Industance With Current Source Drivers for Buck Converters**," IEEE Transactions on Power Electronics, Vol. 26, No. 7, July. 2011, pp. 1815-1819.

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[J37] Z. Zhang, E. Meyer, Y.F. Liu and P.C. Sen, "**A Nonisolated ZVS Self-Driven Current Tripler Topology for Low-Voltage and High-Current Applications**," IEEE Transactions on Power Electronics, Vol. 26, No. 2, Feb. 2011, pp. 512-522.

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[J36] Z. Zhang, J. Fu, Y.F. Liu and P.C. Sen, "**Discontinuous-Current-Source Drivers for High-Frequency Power MOSFETs**," IEEE Transactions on Power Electronics, Vol. 25, No. 7, July. 2010, pp. 1863-1876.

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[J35] E. Meyer, Z. Zhang and Y.F. Liu, "**Controlled Auxiliary Circuit to Improve the Unloading Transient Response of Buck Converters,**" IEEE Transactions on Power Electronics, Vol. 25, No. 4, Apr. 2010, pp. 806-819.

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[J34] Z. Zhang, E. Meyer, Y.F. Liu and P.C. Sen, "**A 1-MHz, 12-V ZVS Nonisolated Full-Bridge VRM With Gate Energy Recovery**," IEEE Transactions on Power Electronics, Vol. 25, No. 3, Mar. 2010, pp. 624-636.

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[J33] Y. F. Liu, E. Meyer, X. Liu, "**Recent Developments in Digital Control Strategies for DC/DC Switching Power Converters,**" * invited paper,* IEEE Transactions on Power Electronics, Vol. 24, No. 11, Nov 2009, pp.2567-2577.

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[J32] Y. F. Liu and W. Eberle, **"Recent Developments in Switching Mode Power Supply Technologies,"** ** invited paper**, IEEE Canadian Review, Fall 2009, pp. 9-13

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[J31] Z. Zhang, W. Eberle, P.C. Sen and Y.F. Liu, "**A Nonisolated ZVS Asymmetrical Buck Voltage Regulator Module With Direct Energy Transfer**," IEEE Transactions on Industrial Electronics, Vol. 56, No. 8, August 2009, pp. 3096-3105.

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[J30] W. Eberle, Z. Zhang, Y.F. Liu, P.C. Sen, "**A Practical Switching Loss Model for Buck Voltage Regulators**", IEEE Transactions on Power Electronics, Vol. 24, No. 3, Mar. 2009, pp. 700-713.

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[J29] G. Feng, E. Meyer, Y.F. Liu, "**A Digital Two-Switching-Cycle Compensation Algorithm for Input-Voltage Transients in DC-to-DC Converters**", IEEE Transactions on Power Electronics, Vol. 24, No. 1, Jan. 2009, pp. 181-191.

..

[J28] Z. Zhang, W. Eberle, P. Lin, Y.F. Liu, P.C. Sen, "**A 1-MHz High-Efficiency 12-V Buck Voltage Regulator With a New Current-Source Gate Driver**", IEEE Transactions on Power Electronics, Vol. 23, No. 6, Nov. 2008, pp. 2817-2827.

..

[J27] S. Ye, E. Meyer and Y.F. Liu, "**A Novel Two Phase Nonisolated Full Bridge With Shared Primary Switches**", IEEE Transactions on Power Electronics, Vol. 23, No. 5, Sept. 2008, pp. 2363-2376.

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[J26] E. Meyer, Z. Zhang and Y.F. Liu, "**An Optimal Control Method for Buck Converters Using a Practical Capacitor Charge Balance Technique**", IEEE Transactions on Power Electronics, Vol. 23, No. 4, July 2008, pp. 1802-1812.

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[J25] W. Eberle, P.C. Sen and Y.F. Liu, "**A New Resonant Gate Drive Circuit with Efficient Energy Recovery and Low Conduction Loss**", IEEE Transactions on Industrial Electronics, Vol. 55, No. 5, May 2008, pp. 2213-2221.

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[J24] Z. Yang, S. Ye, and Y.F. Liu, "**A New Dual Channel Resonant Gate Drive Circuit for Low Gate Drive Loss and Low Switching Loss**", IEEE Transactions on Power Electronics, Vol. 23, No. 3, May 2008, pp. 1574-1583.

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[J23] A. Elnady, A. Noureldin and Y.F. Liu, "**Power-Quality Improvement Using Wiener Filters Based On a Modular Compensating Strategy**", IEEE Transactions on Power Delivery, Vol. 23, No. 2, April 2008, pp. 841-849.

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[J22] W. Eberle, Z. Zhang, Y.F. Liu and P.C. Sen, "**A Current Source Gate Driver Achieving Switching Loss Savings and Gate Energy Recovery at 1-MHz**," IEEE Transactions on Power Electronics, Vol. 23, No. 2, Mar. 2008, pp. 678-691.

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[J21] Z. Zhang, W. Eberle, Y.F. Liu and P.C. Sen, "**Optimal Design of a Resonant Gate Driver for Buck Converter Based on a New Analytical Loss Model**," IEEE Transactions on Power Electronics, Vol. 23, No. 2, Mar. 2008, pp. 653-666.

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[J20] Y. Han and Y.F. Liu, "**A Practical Transformer Core Loss Measurement Scheme for High-Frequency Power Converter**", IEEE Transactions on Industrial Electronics, Vol. 55, No. 2, Feb. 2008, pp. 941-948.

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[J19] S. Ye, W. Eberle and Y.F. Liu, "**A Novel Non-Isolated Full Bridge Topology for VRM Applications**", IEEE Transactions on Power Electronics, Vol. 23, No. 1, Jan. 2008, pp. 427-437.

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[J18] A. Perry, G. Feng, Y.F. Liu and P.C. Sen, "**A Design Method for PI-Like Fuzzy Logic controllers for DC-DC Converter**", IEEE Transactions on Industrial Electronics, Vol. 54, No. 5, Oct. 2007, pp. 2688-2696.

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[J17] Y. Han, W. Eberle and Y.F. Liu, "**A Practical Copper Loss Measurement Method for the Planar Transformer in High-Frequency Switching Converters**", IEEE Transactions on Industrial Electronics, Vol. 54, No. 4, August 2007, pp. 2276-2287.

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[J16] G. Feng, E. Meyer, and Y.F. Liu, "**A New Digital Control Algorithm to Achieve Optimal Dynamic Performance in DC-to-DC Converters**", IEEE Transactions on Power Electronics, July 2007, Volume 22, Number 4, pp. 1489-1498.

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[J15] Z. Yang, S. Ye, and Y.F. Liu, "**A New Resonant Gate Drive Circuit for Synchronous Buck Converter**", IEEE Transactions on Power Electronics, July 2007, Volume 22, Number 4, pp. 1311-1320.

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[J14] W. Zhang, Y.F. Liu, and B. Wu, "**A New Duty Cycle Control Strategy for Power Factor Correction and FPGA Implementation**", IEEE Transactions on Power Electronics, Nov 2006, Volume 21, Number 6, pp. 1745-1753.

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[J13] W. Zhang, Y.F. Liu, and B. Wu, "**New Digital Control Method for Power Factor Correction**", IEEE Transactions on Industrial Electronics, June 2006, Volume 53, Number 3, pp. 987-990.

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[J12] W. Zhang, G. Feng, Y.F. Liu, and B. Wu, "**A Digital Power Factor Correction (PFC) Control Strategy Optimized for DSP**", IEEE Transactions on Power Electronics, Nov 2004, Volume 19, Number 6, pp. 1474-1486.

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[J11] G. Feng, Y.F. Liu and L. Huang, "**A New Robust Algorithm to Improve the Dynamic Performance on the Speed Control of Induction Motor Drive**", IEEE Transactions on Power Electronics, November 2004, Vol.19, No.6, pp. 1614-1627

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[J10] S. Ye, W. Eberle and Y.F. Liu, "**A Novel EMI Filter Design Method for Switching Power Supplies**", IEEE Transactions on Power Electronics, Nov 2004, Volume 19, No. 6, pp. 1668-1678

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[J9] Y. Xi, P. Jain, Y.F. Liu and R. Orr, "**A Self Core Reset and Zero Voltage Switching Forward Converter Topology**", IEEE Transactions on Power Electronics, Vol.15, No.6, November 2000, pp. 1192-1203

..

[J8] G. Moschopoulos, P. Jain, Y.F. Liu and G. Joos, "**A Zero-Voltage Switched PWM Boost Converter with an Energy Feedforward Auxiliary Circuit**", IEEE Transactions on Power Electronics, Vol. 14, No. 4, July 1999, pp. 653-662

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[J7] Y.F. Liu and P.C. Sen, "**New Class-E DC-DC Converter Topologies with Constant Switching Frequency**", IEEE Transactions on Industry Applications, Vol.32, No.4, July/August 1996, pp. 961-969

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[J6] Y.F. Liu and P.C. Sen, "**Large Signal Modeling of Hysteretic Current-Programmed Converters**", IEEE Transactions on Power Electronics, Vol.11, No.3, May 1996, pp.423-430

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[J5] Y.F. Liu and P.C. Sen, "**Source Reactance Lossless Switch (SRLS) for Soft-Switching Converters with Constant Switching Frequency**", IEEE Transactions on Circuits and Systems, Vol.43, No.4, April 1996, pp. 301-312

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[J4] Y.F. Liu and P.C. Sen, "**A Novel Resonant Converter Topology for DC-to-DC Power Supply**", IEEE Transactions on Aerospace and Electronic Systems, Vol.31, No.4, October 1995, pp. 1301-1313

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[J3] Y.F. Liu and P.C. Sen, "**A Novel Method to Achieve Zero-Voltage Regulation in Buck Converter**", IEEE Transactions on Power Electronics, Vol.10, No.3, May 1995, pp. 292-301

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[J2] Y.F. Liu, P.C. Sen and S. Huang, "**Function Control - A Novel Strategy to Achieve Improved Performance of the DC-to-DC Switching Regulators**", IEEE Transactions on Industrial Electronics, Vol.42, No.2, April 1995, pp. 186-191

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[J1] Y.F. Liu and P.C. Sen, "**A General Unified Large-Signal Model for Current Programmed DC-to-DC Converters**", IEEE Transactions on Power Electronics, Vol.9, No.4, July 1994, pp. 414-424

## Conference Papers

[C151] H. Wang, Y. Chen, Y. F. Liu, Z. Yang, J. Afsharian and B. Gong, "**LLC Resonant Converter with Shared Power Switches and Dual Coupled Resonant Tanks to Achieve Automatic Current Sharing**" in *IEEE Energy Conversion Congress & Expo (ECCE) 2017*, Cincinati,Ohio, USA, Oct 2017, pp. 1-8.

[C150] W. Liu, L. Wang, S. Webb, Y. F. Liu and D. Malcolm, "**A Modified Equivalent Circuit Based ElectroThermal Model for Integrated POL Power Modules**," in *IEEE Energy Conversion Congress & Expo (ECCE) 2017*, Cincinati,Ohio, USA, Oct 2017, pp. 1-8.

[C149] Y. Chen, H. Wang and Y.F. Liu, "**Improved Hybrid Rectifier for 1-MHz LLC-Based Universal AC-DC Adapter**," in *Applied Power Electronics Conference and Exposition (APEC) 2017*, Tampa, Florida, USA, March 2017, pp. 23-30

[C148] L. Kou, H. Wang, Y.F. Liu and P.C. Sen, "**DC-Link Capacitor Voltage Balancing Technique for Phase-Shifted PWM-Based Seven-Switch Five-Level ANPC Inverter**," in *Applied Power Electronics Conference and Exposition (APEC) 2017, Tampa, Florida, USA, March 2017, pp. 671-678*

[C147] Y. Zhang, X. Li, Z. Dong, Y.F. Liu and J. Liu, "**High Step-up Isolated DC-DC Converter with Multicell Diode-capacitor Network**," in *Applied Power Electronics Conference and Exposition (APEC) 2017, Tampa, Florida, USA, March 2017, pp.114 - 120*

[C146] Y. Zhang, X. Li, Z. Miu, K. Kudanam, Y.F. Liu and J. Liu, "**High Step-Up Full Bridge DC-DC Converter with Multi-Cell Diode-Capacitor Network**," in *Applied Power Electronics Conference and Exposition (APEC) 2017, Tampa, Florida, USA, March 2017, pp.157 - 163*

[C145] W. Liu, L. Wang, Y.F. Liu and D. Malcolm, "**A 3D Stacked Step-Down Integrated Power Converter**," in *Applied Power Electronics Conference and Exposition (APEC) 2017, Tampa, Florida, USA, March 2017, pp. 890- 897*

[C144] W. Liu, L. Wang, Y.F. Liu and D. Malcolm, "**A Novel Equivalent Circuit Thermal Model for Integrated Power Modules**," in *Applied Power Electronics Conference and Exposition (APEC) 2017, Tampa, Florida, USA, March 2017, pp. 3106 - 3113*

[C143] L. Kou, H. Wang, Y. F. Liu, P.C. Sen and Y. Zhang, "**Modulation Method for Single-Phase Six-Switch Five-Level ANPC Inverter**," in *IEEE Energy Conversion Congress & Expo (ECCE) 2016*, Milwakee,Wisconsin, USA, Sept 2016, pp. 1-8.

[C142] Y. Zhang, Z. Dong, J. Liu and Y.F. Liu, "**Unified Model of High Step-up DC-DC Converterwith Multi-cell Diode-Capacitor/Inductor Network**," in *IEEE Energy Conversion Congress & Expo (ECCE) 2016*, Milwakee,Wisconsin, USA, Sept 2016, pp. 1-8.

[C141] Y. Chen, H. Wang, Z. Hu, Y.F. Liu, J. Afsharian and Z. Yang, "**Efficiency-wise Optimal Design Methodology of LCLC Converter for Wide Input Voltage Range Applications**," in *IEEE Energy Conversion Congress & Expo (ECCE) 2016*, Milwakee,Wisconsin, USA, Sept 2016, pp. 1-8.

[C140] H. Wang, Y. Chen, Y. F. Liu, and S. Liu, "**Automatic current-sharing method for multi-phase LLC resonant converter**," in 2016 IEEE 8th International Power Electronics and Motion Control Conference (IPEMC-ECCE Asia) 2016, Hefei, Anhui, China, May 2016, pp. 3198-3205.

[C139] Y. Chen, H. Wang, Y.F. Liu, J. Afsharian and Z. Yang, "**LLC Converter with Auxiliary Switch for Hold Up Mode Operation,**" in *Applied Power Electronics Conference and Exposition (APEC) 2016*, Long Beach, California, USA, March 2016, pp.2312-2319

[C138] H. Gui, Z. Zhang, D. Gu, Y. Yang, Z. Lu and Y.F. Liu, "**A Hierarchical Active Balancing Architecturefor Li-ion Batteries,**" in *Applied Power Electronics Conference and Exposition (APEC) 2016*, Long Beach, California, USA, March 2016, pp.1243-1248

[C137] L. Wang, Y.F. Liu and D. Malcolm, "**An Innovative Power Module with Power-SystemIn-Inductor Structure,**" in *Applied Power Electronics Conference and Exposition (APEC) 2016*, Long Beach, California, USA, March 2016, pp.2087-2094

[C136] H. Wang, Y. Chen and Y.F. Liu, "**A Passive-Impedance-Matching Concept for Multiphase Resonant Converter,**" in *Applied Power Electronics Conference and Exposition (APEC) 2016*, Long Beach, California, USA, March 2016, pp.2304-2311

[C135] H. Wang, Y. Chen, Z. Hu, L. Wang, T. Liu, W. Liu, Y.F. Liu, J. Afsharian and Z. Yang, "**An Algorithm to Analyze Circulating Current for MultiPhase Resonant Converter,**" in *Applied Power Electronics Conference and Exposition (APEC) 2016*, Long Beach, California, USA, March 2016, pp.899-906

[C134] H. Wang, L. Kou, Y.F. Liu, P. C. Sen and S. Liu, "**New Low-Cost Five-Level Active Neutral-Point Clamped Converter,**" in *Applied Power Electronics Conference and Exposition (APEC) 2016*, Long Beach, California, USA, March 2016, pp.1489-1496

[C133] H. Wang, L. Kou, Y.F. Liu, P. C. Sen and S. Liu, "**Seven-Switch Five-Level Active Neutral-Point Clamped Converter and Optimal Modulation Strategy,**" in *Applied Power Electronics Conference and Exposition (APEC) 2016*, Long Beach, California, USA, March 2016, pp.2278-2285

[C132] H. Wang, Y. Chen, Z. Hu, L. Wang, Y. Qiu, W. Liu, Y.F. Liu, J. Afsharian and Z. Yang, "**A Common Capacitor Multi-Phase LLC Resonant Converter,**" in *Applied Power Electronics Conference and Exposition (APEC) 2016*, Long Beach, California, USA, March 2016, pp.2320-2327

[C131] L. Wang, W. Liu, Y.F. Liu and D. Malcolm, "**Thermal Analysis of a Magnetic Packaged Power Module,**" in *Applied Power Electronics Conference and Exposition (APEC) 2016*, Long Beach, California, USA, March 2016, pp.2095-2102

[C130] Y. Qiu, H. Wang, L. Wang, Y.F. Liu and P. C. Sen, "**Current-Ripple-Based Control Strategy to Achieve Low-Frequency Ripple Cancellation in Single-Stage High-Power LED Driver,**" in *IEEE Energy Conversion Congress & Expo (ECCE) 2015*, Montreal,Quebec, Canada, Sept 2015, pp. 5316-5322

[C129] B. White, H. Wang, Y.F. Liu, "**An Average Current Modulation Method for Single Stage LED Drivers with High Power Factor and Zero Low Frequency Current Ripple,**"** **in *IEEE Energy Conversion Congress & Expo (ECCE) 2015*, Montreal,Quebec, Canada, Sept 2015, pp.** **3247-3252

[C128] S. Liu, X. Liu, Y.F. Liu, "**Analysis on Feedback Interconnections of Cascaded DC-DC Converter Systems,**" in *IEEE Energy Conversion Congress & Expo (ECCE) 2015*, Montreal,Quebec, Canada, Sept 2015, pp. 5160-5166

[C127] T. Liu, H. Wang, W. Liu, Y.F. Liu, L. Wang, D.Hamid, D.Malcolm, "**A Novel Asymmetrical Three-Level BUCK (ATL BUCK) Converter for Point-of-Load (POL) Application,**" in *IEEE Energy Conversion Congress & Expo (ECCE) 2015*, Montreal,Quebec, Canada, Sept 2015, pp. 5096-5101

[C126] H. Wang, Y. Chen, Y.F. Liu, J. Afshanrian, Z. Yang, "**A Common Inductor Multi-Phase LLC Resonant Converter,**" in *IEEE Energy Conversion Congress & Expo (ECCE) 2015*, Montreal,Quebec, Canada, Sept 2015, pp. 548-555

[C125] H. Wang, Y.F. Liu and P.C. Sen, "**A Neutral Point Clamped Multilevel Topology Flow Graph and Space NPC Multilevel Topology,**" in *IEEE Energy Conversion Congress & Expo (ECCE) 2015*, Montreal,Quebec, Canada, Sept 2015, pp. 3615-3621

[C124] L. Jia, Y.F. Liu and D. Fang, **"****High Power Factor Single Stage Flyback Converter for Dimmable LED Driver,**" in *IEEE Energy Conversion Congress & Expo (ECCE) 2015*, Montreal,Quebec, Canada, Sept 2015, pp. 3231-3238

[C123] H. Wang, X. Pei, Y. Chen, Y. Kang and Y. F. Liu, "**Short-Circuit Fault Protection Strategy of Parallel Three-phase Inverters,**" in *IEEE Energy Conversion Congress & Expo (ECCE) 2015*, Montreal,Quebec, Canada, Sept 2015, pp. 1736-1742

[C122] Y. Chen, H. Wang, Z. Hu, Y.F. Liu, J. Afsharian, Z. Yang, "**LCLC Resonant Converter For Hold Up Mode Operation,**" in *IEEE Energy Conversion Congress & Expo (ECCE) 2015*, Montreal,Quebec, Canada, Sept 2015, pp. 556-562

[C121] H. Wang, Y. Chen, Y.F. Liu, J. Afsharian, Z. Yang, "**A New LLC Converter Family with Synchronous Rectifier to Increase Voltage Gain for Hold-up Application,**" in *IEEE Energy Conversion Congress & Expo (ECCE) 2015*, Montreal,Quebec, Canada, Sept 2015, pp. 5447-5453

[C120] B. White, Y. F. Liu, and X. Liu, "**A control technology to achieve a low cost flicker-free single stage LED driver with power factor correction**," in 2015 IEEE 16th Workshop on Control and Modeling for Power Electronics (COMPEL) 2015, Vancouver, British Columbia, Canada, July 2015, pp. 1-6.

[C119] Z. X. Chen, J. Wang, L. S. Ge, T. Jiang, Y. Liu, and Y. F. Liu, "**Double integral sliding mode control of paralleled dc/dc converters**," in 2015 IEEE 10th Conference on Industrial Electronics and Applications (ICIEA) 2015, Auckland, New Zealand, June 2015, pp. 1134-1138.

[C118] Z. x. Chen, T. Jiang, L. s. Ge, J. Wang, Y. Liu, and Y. f. Liu, "**Research on delay-dependent stability of parallel DC-DC converter system based on a Wireless communication**," in 2015 IEEE 10th Conference on Industrial Electronics and Applications (ICIEA) 2015, Auckland, New Zealand, June 2015, pp. 749-752.

[C117] J. Lin, Y. Zhou, Z. Zhang, X. Ruan, and Y. F. Liu, "**Analysis and design of a 30 MHz resonant SEPIC converter**," in 2015 IEEE Applied Power Electronics Conference and Exposition (APEC) 2015,Charlotte, NC, USA. March 2015, pp. 455-460.

[C116] H. D. Gui, Y. Zhang, Z. Zhang, and Y. F. Liu, "**An optimized efficiency-based control strategy for islanded paralleled PV micro-converters**," in 2015 IEEE Applied Power Electronics Conference and Exposition (APEC) 2015, Charlotte, NC, USA. March 2015, pp. 229-234.

[C115] Z. Dong, Z. Zhang, X. Ren, X. Ruan, and Y. F. Liu, "**A gate drive circuit with mid-level voltage for GaN transistors in a 7-MHz isolated resonant converter**," in 2015 IEEE Applied Power Electronics Conference and Exposition (APEC) 2015, Charlotte, NC, USA. March 2015, pp. 731-736.

[C114] Y. Y. Cai, Z. Zhang, Y. Zhang, and Y. F. Liu, "**A self-reconfiguration control regarding recovery effect to improve the discharge efficiency in the distributed battery energy storage system**," in 2015 IEEE Applied Power Electronics Conference and Exposition (APEC) 2015, Charlotte, NC, USA. March 2015, pp. 1774-1778.

[C113] P. Fang, Z. Hu, Y.F. Liu, "**An Energy Channeling LED Driver Technology to Achieve Flicker-free Operation with True Single Stage Power Factor Correction,**" in Applied Power Electronics Conference and Exposition (APEC) 2015, Charlotte, NC, USA. March 2015, pp. 3353-3358

[C112] Y. Qiu, L. Wang, Y.F. Liu and P.C. Sen, "**A novel Bipolar Series Ripple Compensation Method for Single-Stage High-Power Led Driver,**" in Applied Power Electronics Conference and Exposition (APEC) 2015, Charlotte, NC, USA. March 2015, pp. 861-868

[C111] H. Wang, S. Burton, Y.F. Liu, P.C. Sen and J.M. Guerrero, "**A Systematic Method to Synthesize New Transformerless Full-bridge Grid-tied Inverters,**" in *IEEE Energy Conversion Congress & Expo (ECCE) 2014*, Pittsburgh, Pennsylvania, USA, June 2014, pp. 2760-2766

[C110] Y. Qiu, H. Wang, L. Wang, Y.F. Liu and P.C. Sen, "**Electrolytic-Capacitor-Less High-Power LED Driver,**" in *IEEE Energy Conversion Congress & Expo (ECCE) 2014*, Pittsburgh, Pennsylvania, USA, June 2014, pp. 3612-3619

[C109] L. Wang, Z. Hu, Y. Qiu, H. Wang and Y.F. Liu, "**A New Model for Designing Multi-hole Multipermeability Nonlinear LTCC Inductors**," in Applied Power Electronics Conference and Exposition (APEC) 2014, Fort Worth, Texas, USA, 2014, pp. 757-762

[C108] P. Fang and Y.F. Liu, "**An Electrolytic Capacitor-Free Single Stage BuckBoost LED Driver and its Integrated Solution,**" in Applied Power Electronics Conference and Exposition (APEC) 2014, Fort Worth, Texas, USA, 2014, pp. 1394-1401

[C107] P. Fang and Y.F. Liu, "**Single Stage Primary Side Controlled Offline Flyback LED Driver with Ripple Cancellation,**" in Applied Power Electronics Conference and Exposition (APEC) 2014, Fort Worth, Texas, USA, 2014, pp. 3323-3328

[C106] P. Fang and Y.F. Liu, "**A Innovative Current Sensor-less Continuous Conduction Mode PFC Control,**" in *IEEE Energy Conversion Congress & Expo (ECCE) 2013*, Denver, Colorado, USA, September 2013, pp. 2155-2161

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[C105] P. Fang, B. White, C. Fiorentino and Y.F. Liu, "**Zero Ripple Single Stage AC-DC LED Driver with Unity Power Factor,**" in *IEEE Energy Conversion Congress & Expo (ECCE) 2013*, Denver, Colorado, USA, September 2013, pp. 3452-3458

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[C104] Z. Hu, , L. Wang, Y.F. Liu and P.C. Sen, "**Bang-Bang Charge Control for LLC Resonant Converters,**" in *IEEE Energy Conversion Congress & Expo (ECCE) 2013*, Denver, Colorado, USA, September 2013, pp.140-146

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[C103] Z. Hu, Y.F. Liu and P.C. Sen, "**Cycle-by-Cycle Average Input Current Sensing Method for LLC Resonant Topologies**," in *IEEE Energy Conversion Congress & Expo (ECCE) 2013*, Denver, Colorado, USA, September 2013, pp. 167-174

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[C102] M. Shepertycky, J.T. Zhang, Y.F. Liu and Q. Li, "**Development of an Energy Harvesting Backpack and Performance Evaluation**," in *IEEE International Conference on Rehabilitation Robotics (ICORR) 2013*, Seattle, Washington, USA, June 2013

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[C101] C. Fiorentino, Z. Hu and Y.F. Liu, "**Improving the Light Load Efficiency and THD of PFC Converters using a Line Cycle Skipping Method**," in *IEEE Workshop on Control and Modeling for Power Electronics (COMPEL) 2013*, Salt Lake City, Utah, USA, June 2013

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[C100] Z. Hu, Y. Qiu and Y.F. Liu, "**Digital Implementation of Load Sharing Method for Interleaved LLC Converters**," in *IEEE Workshop on Control and Modeling for Power Electronics (COMPEL) 2013*, Salt Lake City, Utah, USA, June 2013

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[C99] C. Fiorentino, Z. Hu and Y.F. Liu, **"A Line Cycle Skipping Method to Improve the Light Load Efficiency and THD of PFC Converters"** in *Applied Power Electronics Conference and Exposition (APEC) 2013*, Long Beach, California, USA, 2013, pp. 368-373

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[C98] Z. Hu, Y. Qiu, Y.F. Liu and P.C. Sen**, "An Interleaving and Load Sharing Method for Multiphase LLC Converters"** in *Applied Power Electronics Conference and Exposition (APEC) 2013*, Long Beach, California, USA, 2013, pp. 1421-1428

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[C97] Y. Zhang, X.F. He, Z. Zhang and Y.F. Liu, **"A Hybrid Control Method for Photovoltaic Grid-Connected Interleaved Flyback Micro-Inverter to Achieve High Efficiency in Wide Load Range,"** in *Applied Power Electronics Conference and Exposition (APEC) 2013*, Long Beach, California, USA, 2013, pp. 751-756

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[C96] Z. Zhang, F.F. Li, F. Zhang and Y.F. Liu, **"A Dual-Channel Isolated Resonant Gate Driver for Low Gate Drive Loss in ZVS Full-Bridge Converters,"** in *Applied Power Electronics Conference and Exposition (APEC) 2013*, Long Beach, California, USA, 2013, pp. 31-37

[C95] L. Wang, Z. Hu, Y.F. Liu, Y. Pei and X. Yang**, "Design of Multi-permeability Distributed Air-gap Inductors"** in *IEEE Energy Conversion Congress & Expo (ECCE) 2012*, Raleigh, North Carolina, USA, 2012 pp. 3285-3292

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[C94] Z. Hu, Y.J. Qiu, L. Wang and Y.F. Liu, **"An Interleaved LLC Resonant Converter Operating at Constant Switching Frequency"** in *IEEE Energy Conversion Congress & Expo (ECCE) 2012*, Raleigh, North Carolina, USA, , 2012 pp. 3541-3548

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[C93] Z. Zhang, X.F. He, X. Ren and Y.F. Liu, **"Multi-Mode Control for Photovoltaic Grid-connected Interleaved Flyback Micro-inverters to Achieve High Efficiency in Wide Load Range"** in *IEEE Energy Conversion Congress & Expo (ECCE) 2012*, Raleigh, North Carolina, USA, 2012 pp. 2433-2438

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[C92] Z. Zhang, P. Xu, X. Ren, Y.F. Liu and P.C. Sen, "**Optimization and Comparison of Continuous and Discontinuous Current Source Drivers for MHz Boost PFC Converters**" in *Applied Power Electronics Conference and Exposition (APEC)* *2012*, Orlando, Florida, USA, 2012, pp. 1165-1171

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[C91] L. Wang, Y. Pei, X. Yang, Z. Wang and Y.F. Liu, "**A Horizontal-winding Multi-permeability Distributed Air-gap Inducto**r" in *Applied Power Electronics Conference and Exposition (APEC)* *2012*, Orlando, Florida, USA, 2012, pp. 994-1001

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[C90] Z. Zhang, P. Xu, Y.F. Liu and P.C. Sen, "**Adaptive Current Source Drivers for Efficiency Optimization of High Frequency Synchronous Buck Converters**," in *IEEE Energy Conversion Congress & Expo (ECCE)* *2011*, Phoenix, Arizona, USA, 2011, pp. 1181 - 1187

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[C89] P. Xu, Z. Zhang, Y.F. Liu and P.C. Sen, "**MHz Power Factor Correction with Adaptive Current Source Drivers**," in *IEEE Energy Conversion Congress & Expo (ECCE)* *2011*, Phoenix, Arizona, USA, 2011, pp. 2338 - 2344

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[C88] P. Xu, Z. Zhang, Y.F. Liu and P.C. Sen, "**Adaptive Discontinuous Current Source Driver to Achieve Switching Loss Reduction for MHz PFC Boost Converters**," in *IEEE Energy Conversion Congress & Expo (ECCE)* *2011*, Phoenix, Arizona, USA, 2011, pp. 1346-1352

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[C87] L. Jia, Z. Hu, Y.F. Liu and P.C. Sen, "**A Practical Control Strategy to Improve Unloading Transient Response Performance for Buck Converters**," in *IEEE Energy Conversion Congress & Expo (ECCE)* *2011*, Phoenix, Arizona, USA, 2011, pp. 397-404

[C86] Z. Zhang, P. Xu,Y.F. Liu and P.C. Sen, "**Adaptive Current Source Drivers for MHz Power Factor Correction**," in Applied Power Electronics Conference and Exposition (APEC) 2011, Fort Worth, Texas, USA, 2011, pp. 1456-1463

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[C85] L. Jia, D. Wang, Y.F. Liu and P.C. Sen, "**A Novel Analog Implementation of Capacitor Charge Balance Controller with a Practical Extreme Voltage Detector**," in *Applied Power Electronics Conference and Exposition (APEC) 2011, Fort Worth, Texas, USA, 2011,* pp. 245-252

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[C84] D. Wang, L. Jia, Y.F. Liu and P.C. Sen, "**An Improved Driving Method for Synchronous Rectifier using Drain-Source Voltage Sensing**," in *Applied Power Electronics Conference and Exposition (APEC)* *2011*, Fort Worth, Texas, USA, 2011, pp. 1433-1438

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[C83] Z. Hu, Y.F. Liu and T.H. Yeap, "**High-Accuracy Digital controlled isolated power supply with low data transfer requirements**," in *Applied Power Electronics Conference and Exposition (APEC) 2011*, Fort Worth, Texas, USA, 2011, pp. 338-345

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[C82] Z. Zhang, J. Fu, Y.F. Liu and P.C. Sen, "**Comparison of Continuous and Discontinuous Current Source Drivers for High Frequency Applications**," in *IEEE Energy Conversion Congress & Expo (ECCE) 2010*, Atlanta, Georgia, USA, pp. 2434-2440

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[C81] Z. Hu, T.H. Yeap and Y.F. Liu, "**Multi-Resolution Feedback to Minimize Communication Data and Improve Output Accuracy**," in *IEEE Energy Conversion Congress & Expo.(ECCE) 2010*, Atlanta, Georgia, USA, pp. 787-795

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[C80] Z. Hu, Y.F. Liu and T.H. Yeap, " **An Efficient Communication Protocol for Single- and Multi-Module Isolated Digital Power Supplies Using a Single Pulse-Transformer**," in *IEEE Energy Conversion Congress & Expo (ECCE) 2010*, Atlanta, Georgia, USA, pp. 1997-2003

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[C79] L. Jia , D. Wang, E. Meyer, Y.F. Liu and P.C. Sen, " **A Novel Parameter-Independent Digital Optimal Control Algorithm for Dc-Dc Buck Converters Based on Parabolic Curve Fitting**," in *IEEE Energy Conversion Congress & Expo (ECCE) 2010*, Atlanta, Georgia, USA, pp. 500-507

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[C78] L. Jia , D. Wang, J. Fu, Y.F. Liu and P.C. Sen, " **A Novel Digital Capacitor Charge Balance Control Algorithm with a Practical Extreme Voltage Detector**," in *The IEEE Energy Conversion Congress & Expo (ECCE) 2010*, Atlanta, Georgia, USA, pp. 514-521

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[C77] D. Wang, L. Jia , J. Fu, Y.F. Liu and P.C. Sen, " **A New Driving Method for Synchronous Rectifiers of LLC Resonant Converter with Zero-crossing Noise Filter**," in *The* *IEEE Energy Conversion Congress & Expo (ECCE) 2010*, Atlanta, Georgia, USA. pp. 249-255

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[C76] J. Fu, Z. Zhang, L. Jia , Y.F. Liu and P.C. Sen, " **A New Inductorless Bipolar Gate Driver for Control FET of High Frequency Buck Converters**," in *the IEEE Energy Conversion Congress & Expo (ECCE) 2010*, Atlanta, Georgia, USA . pp. 2422-2429

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[C75] Y.F. Liu and L. Jia " **Performance Enhancement with Digital Control Technologies for DC/DC Switching Converters**," in the *12th IEEE Workshop on Control and Modeling for Power Electronics (COMPEL 2010)*, University of Colorado, Boulder, Colorado, USA. pp.1-8

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[C74] E. Meyer, D. Wang, L. Jia and YF. Liu, " **Digital Charge Balance Controller with an Auxiliary Circuit for Superior Unloading Transient Performance of Buck Converters**," in IEEE Applied Power Electronics Conference and Exposition (APEC), Palm Springs, California, February 2010, pp. 124-131.

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[C73] Z. Zhang, J. Fu, Y.F. Liu and P.C. Sen, " **Switching Loss Analysis Considering Parasitic Loop Inductance with Current Source Drivers for Buck Converters**", IEEE Applied Power Electronics Conference and Exposition (APEC), Palm Springs, California, February 2010, pp. 1482-1486.

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[C72] J. Fu, Z. Zhang, A. Dickson, Y.F. Liu and P.C. Sen, " **Accurate Switching Loss Model and Optimal Design of A Current Source Driver Considering the Current Diversion Problem**", IEEE Applied Power Electronics Conference and Exposition (APEC), Palm Springs, California, February 2010, pp. 702-709.

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[C71] E. Meyer, Z. Zhang, Y.F. Liu, "**Digital Charge Balance Controller with Low Gate Count to Improve the Transient Response of Buck Converters**", IEEE Energy Conversion Congress and Exposition (ECCE), San Jose, California, September 2009, pp. 3320-3327.

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[C70] Z. Zhang, E. Meyer, Y.F. Liu and P.C. Sen, "**A Non-Isolated ZVS Self-Driven Current Tripler Topology for Low Voltage and High Current Applications**", IEEE Energy Conversion Congress and Exposition (ECCE), San Jose, California, September 2009, pp. 1983-1990.

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[C69] Z. Zhang, J. Fu, Y.F. Liu and P.C. Sen, " **A New Discontinuous Current Source Driver for High Frequency Power MOSFETs**", IEEE Energy Conversion Congress and Exposition (ECCE), San Jose, California, September 2009, pp. 1655-1662.

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[C68] J. Fu, Z. Zhang, W. Eberle, Y.F. Liu and P.C. Sen, "**A High Efficiency Current Source Driver with Negative Gate Voltage for Buck Voltage Regulators**", IEEE Energy Conversion Congress and Exposition (ECCE), San Jose, California, September 2009, pp. 1663-1670.

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[C67] E. Meyer, Z. Zhang, Y.F. Liu, "**Controlled Auxiliary Circuit with Measured Response for Reduction of Output Voltage Overshoot in Buck Converters**", IEEE Applied Power Electronics Conference (APEC), Washington, DC, February 2009, pp. 1367-1373.

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[C66] Z. Zhang, E. Meyer, Y.F. Liu, P.C. Sen, "**A New ZVS Non-Isolated Full-Bridge Voltage Regulator Module with Gate Energy Recovery**", IEEE Applied Power Electronics Conference (APEC), Washington, DC, February 2009, pp. 1469-1475.

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[C65] E. Meyer, Z. Zhang and Y.F. Liu, "**Controlled Current Source Circuit (CCSC) for Reduction of Output Voltage Overshoot in Buck Converters**", IEEE Power Electronics Specialists Conference (PESC), Rhodes, Greece, June 2008, pp. 815-820.

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[C64] W. Eberle, Z. Zhang, Y.F. Liu and P.C. Sen, "**A Simple Switching Loss Model for High Switching Frequency Voltage Regulators with Current Source Gate Drive**," IEEE Power Electronics Specialists Conference (PESC), Rhodes, Greece, June 2008, pp. 3780-3786.

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[C63] Z. Zhang, W. Eberle, Y.F. Liu and P.C. Sen, "**A Novel Non-Isolated ZVS Asymmetrical Buck Converter for 12V VRs**," IEEE Power Electronics Specialists Conference (PESC), Rhodes, Greece, June 2008, pp. 974-978.

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[C62] Z. Zhang,W. Eberle, Y.F. Liu and P.C. Sen, "**A New Hybrid Gate Drive Scheme for Buck Voltage Regulators**," IEEE Power Electronics Specialists Conference (PESC), Rhodes, Greece, June 2008, pp. 2498-2504.

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[C61] E. Meyer and Y.F. Liu, "**A Practical Minimum Time Control Method for Buck Converters Based on Capacitor Charge Balance**", IEEE Applied Power Electronics (APEC), Austin, Texas, USA, February 2008, pp. 10-16.

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[C60] S. Ye, E. Meyer and Y.F. Liu, "**A Novel Non-Isolated Two-Phase Full Bridge Topology for VRM Applications**", IEEE Applied Power Electronics (APEC), Austin, USA, February 2008, pp. 24-30.

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[C59] S. Ye, E. Meyer and Y.F. Liu, "**A Novel Isolated Two-Phase Full Bridge Topology for VRM Applications**", IEEE Applied Power Electronics Conference (APEC), Austin, Texas, USA, February 2008, pp. 353-359.

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[C58] W. Eberle, Z. Zhang, Y.F. Liu and P.C. Sen, "**A Simple Switching Loss Model for High Switching Frequency DC-DC Converters**," IEEE Applied Power Electronics Conference (APEC), Austin, Texas, USA, February 2008, pp. 36-42.

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[C57] Z. Zhang, W. Eberle, Y.F. Liu and P.C. Sen, "**A New Current-Source Gate Driver for a Buck Voltage Regulator**," IEEE Applied Power Electronics Conference (APEC), Austin, Texas, USA, February 2008, pp. 1433-1439.

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[C56] W. Eberle, Z. Zhang, Y.F. Liu, and P.C. Sen "**A High Efficiency Synchronous Buck VRM with Current Source Gate Driver,**" IEEE Power Electronics Specialists Conference (PESC), 2007, Orlando, FL, USA, pp. 21-27.

PESC presentation

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[C55] E. Meyer and Y.F. Liu, "**A Quick Capacitor Charge Balance Control Method to Achieve Optimal Dynamic Response for Buck Converters,**" IEEE Power Electronics Specialists Conference (PESC), 2007, Orlando, USA, pp. 1549-1555.

PESC presentation

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[C54] Z. Zhang, W. Eberle, Z. Yang, Y.F. Liu and P.C. Sen, "**Optimal Design of Current Source Gate Driver for a Buck Voltage Regulator Based on a New Analytical Loss Model**," IEEE Power Electronics Specialists Conference (PESC), 2007, Orlando, USA, pp. 1556-1562.

PESC presentation

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[C53] A. Elnady, A. Noureldin and Y.F. Liu, "**Implementation of the Wiener Filter for Extracting Power Quality Disturbances**" IEEE Power Electronics Specialists Conference (PESC), 2007, Orlando, Florida, USA, pp. 1116-1120.

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[C52] E. Meyer, G. Feng and Y.F. Liu, "**Novel Digital Controller Improves Dynamic Response and Simplifies Design Process of Voltage Regulator Module**" IEEE Applied Power Electronics Conference (APEC), 2007, Anaheim, California, USA, pp. 1447-1453.

APEC poster

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[C51] S. Ye, W. Eberle and Y.F. Liu, " **A Novel Non-Isolated Full Bridge Topology for VRM Applications**," IEEE Applied Power Electronics Conference (APEC), 2007, Anaheim, California, USA, pp. 134-140.

APEC presentation

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[C50] W. Eberle, Y.F. Liu and P.C. Sen, "**A Resonant Gate Drive Circuit with Reduced MOSFET Switching and Gate Losses**", IEEE Industrial Electronics Society Conference (IECON), 2006, Paris, France, pp. 1745-1750

IECON presentation

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[C49] K.Xu, Y.F. Liu and P.C. Sen, " **A New Resonang Gate Drive Circuit Utilizing Leakage Inductance of Transformer**", IEEE Industrial Electronics Society Conference (IECON), 2006, Paris, France, pp. 1933-1937

IECON presentation

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[C48] G. Feng, E. Meyer and Y.F. Liu, "**High Performance Digital Control Algorithms For DC-DC Converters Based on the Principle of Capacitor Charge Balance**", IEEE Power Electronics Specialists Conference (PESC), 2006, Jeju, South Korea, pp. 1740-1746

PESC presentation

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[C47] Z. Zhang, Z. Yang, S. Ye and Y.F. Liu, "**Topology and Analysis of a New Resonant Gate Driver**", IEEE Power Electronics Specialists Conference (PESC), 2006, Jeju, South Korea, pp. 1453-1459

PESC presentation

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[C46] W. Eberle, Y.F. Liu and P.C. Sen, "**A Simple Large Signal Model for Isolated DC-DC Converters**", IEEE Canadian Conference on Electrical and Computer Engineering (CCECE), Ottawa, Canada, May 2006, pp. 1267-1270

CCECE presentation

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[C45] W. Eberle, P.C. Sen and Y.F. Liu, "**A Novel High Performance Resonant Gate Drive Circuit with Low Circulating Current**", IEEE Applied Power Electronics Conference (APEC), 2006, Dallas, Texas, USA, pp. 324-330

APEC presentation

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[C44] Z. Yang, S. Ye and Y.F. Liu, "**A New Resonant Gate Drive Circuit for Synchronous Buck Converter**", IEEE Applied Power Electronics Conference (APEC), 2006, Dallas, Texas, USA, pp. 52-58

APEC presentation

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[C43] Z. Yang, S. Ye and Y.F. Liu, "**A New Dual Channel Resonant Gate Drive Circuit for Synchronous Rectifiers**", IEEE Applied Power Electronics Conference (APEC), 2006, Dallas, Texas, USA, pp. 756-762

APEC presentation

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[C42] G. Feng, W. Eberle and Y.F. Liu, "**A Digital Control Algorithm for DC-DC Converters Under Input Voltage Changes**", IEEE Applied Power Electronics Conference (APEC), 2006, Dallas, Texas, USA, pp. 1430-1436

APEC poster

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[C41] W. Eberle, P.C. Sen and Y.F. Liu, "**A New Resonant Gate Drive Circuit with Efficient Energy Recovery and Low Conduction Loss**", IEEE Industrial Electronics Society Conference (IECON), 2005, pp. 650-655

IECON presentation

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[C40] K. Xu, Y.F. Liu and P.C. Sen, " **A New Resonant Gate Drive Circuit with Centre-Tapped Transformer**", IEEE Industrial Electronics Society Conference (IECON), 2005, pp. 639-644

IECON presentation

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[C39] A. Perry, G. Feng, Y.F. Liu and P.C. Sen, "**A New Analysis and Design Method for Fuzzy Logic Controllers Used in Power Converters**", IEEE Industrial Electronics Society Conference (IECON), 2005, pp. 1006-1011

IECON presentation

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[C38] Y.F. Liu and P.C. Sen, *Invited Paper*, "**Digital Control of Switching Power Converters**", International Conference on Control Applications (ICC), 2005, pp. 635-640

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[C37] Z. Yang, S. Ye and Y.F. Liu, "**A New Transformer-Based Non-Isolated topology Optimized for VRM Application**", IEEE Power Electronics Specialists Conference (PESC), 2005, pp. 447-453

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[C36] S. Ye, W. Eberle, Z. Yang and Y. F. Liu, " **A New Non-Isolated Full Bridge Topology for Low Voltage High Current VRM Applications**", IEEE Power Electronics Specialists Conference (PESC), 2005, pp. 389-395

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[C35] G. Feng, W. Eberle and Y. F. Liu, "**A New Digital Control Algorithm to Achieve Optimal Dynamic Performance in DC-to-DC Converters**", IEEE Power Electronics Specialists Conference (PESC), 2005, pp. 2744-2749

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[C34] W. Zhang, G. Feng, Y.F. Liu and B. Wu, "**A New Duty Cycle Parallel Control Method and FPGA Implementation for AC-DC Converters with Power Factor Correction (PFC)**", IEEE Applied Power Electronics Conference (APEC), 2005, pp. 805-810

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[C33] Z. Yang, S. Ye and Y.F. Liu, " **A Novel Non-Isolated Half Bridge DC-DC Converter**", IEEE Applied Power Electronics Conference (APEC), 2005, pp. 301-307

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[C32] Y.W. Lu and Y.F. Liu, "**A Large-Signal Dynamic Model for Single-Phase AC-DC Converter with Power Factor Correction**", IEEE Power Electronics Specialists Conference (PESC), 2004, pp. 1057-1063

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[C31] Y. Han and Y.F. Liu, "**New Measurement Methods to Characterize Transformer Core Loss and Copper Loss in High-Frequency Switching Mode Power Supply**", IEEE Power Electronics Specialists Conference (PESC), 2004, pp. 1695-1701

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[C30] W. Zhang, G. Feng, Y.F. Liu, and B. Wu, " **A Direct Duty Cycle Calculation Algorithm for Digital Power Factor Correction (PFC) Implementation**", IEEE Power Electronics Specialists Conference (PESC), 2004, pp. 2326-2332

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[C29] A. Perry, G. Feng, Y.F. Liu and P.C. Sen, "**A New Sliding Mode-Like Control Method for Buck Converter**", IEEE Power Electronics Specialists Conference (PESC), 2004, pp. 3688-3693

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[C28] A. Perry, G. Feng, Y.F. Liu and P.C. Sen, "**A New Design Method for PI-like Fuzzy Logic Controllers Applied to DC-to-DC Converter**", IEEE Power Electronics Specialists Conference (PESC), 2004, pp. 3751-3757

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[C27] G. Feng, W. Zhang and Y.F. Liu, " **A New Current Feedback Fuzzy Logic Controller with Extended State Observer for DC-to-DC Converters**", IEEE Applied Power Electronics Conference (APEC), 2004, pp. 1771-1777

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[C26] W. Zhang, G. Feng, Y.F. Liu and B. Wu, "**DSP Implementation of Predictive Control Strategy for Power Factor Correction (PFC)**", IEEE Applied Power Electronics Conference (APEC), 2004, pp. 67-73

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[C25] W. Eberle, Y. Han, Y.F. Liu and S. Ye, "**An Overall Study of the Asymmetrical Half-Bridge with Unbalanced Turns and Current Mode Control**", IEEE Applied Power Electronics Conference (APEC), 2004, pp. 1083-1089

.

[C24] Y.W. Lu, G. Feng and Y.F. Liu, " **A Large Signal Dynamic Model for DC-to-DC Converters with Average Current Control**", IEEE Applied Power Electronics Conference (APEC), 2004, pp. 797-803

.

[C23] W. Zhang, G. Feng, Y.F. Liu and B. Wu, "**Analysis and Implementation of a New PFC Digital Control Method**", IEEE Power Electronics Specialists Conference (PESC), 2003, pp. 335-340

.

[C22] S. Ye and Y.F. Liu, "**EMI Filter Design Method for Communication Power Sub-System**", IEEE Applied Power Electronics Conference (APEC), 2003, 2003, pp. 483-489

.

[C21] G. Feng, W. Zhang and Y.F. Liu, " **An Adaptive Current Mode Fuzzy Logic Controller for DC-to-DC Converters**", IEEE Applied Power Electronics Conference (APEC) 2003, pp. 983-989

.

[C20] W. Zhang, G. Feng, Y.F. Liu and B. Wu, "**A New Predictive Control Strategy for Power Factor Correction**", IEEE Applied Power Electronics Conference (APEC), 2003, pp. 403-409

.

[C19] G. Feng, W. Zhang and Y.F. Liu, "**A New Adaptive Fuzzy Logic Control Method for DC-to-DC Converter**", IEEE Industrial Electronics Society Conference (IECON), 2002, pp. 1208-1213

.

[C18] W. Zhang, G. Feng, Y.F. Liu and Bin Wu, " **A New Power Factor Correction (PFC) Control Method Suitable for Low Cost DSP**", IEEE International Telecommunications Energy Conference (INTELEC), 2002, pp. 407-414

.

[C17] W. Eberle and Y.F. Liu, "**A Zero Voltage Switching Asymmetrical Half-Bridge DC/DC Converter With Unbalanced Secondary Windings For Improved Bandwidth**", IEEE Power Electronics Specialists Conference (PESC), 2002, pp. 1829-1834

.

[C16] G. Feng, Y.F. Liu and L. Huang, "**A New Robust Controller to Improve the Dynamic Performance of Induction Motors**", IEEE Power Electronics Specialists Conference (PESC), 2001, pp. 778 -783

.

[C15] G. Feng and Y.F. Liu, " **An Improved Nonlinear Control Strategy for Induction Motor Drive**", IEEE Canadian Conference on Electrical and Computer Engineering (CCECE), 2001, pp. 7-12

.

[C14] Y. Zhang, P.C. Sen and Y.F. Liu, "**A Novel Zero Voltage Switched (ZVS) Buck Converter Using Coupled Inductor**", IEEE Canadian Conference on Electrical and Computer Engineering (CCECE), 2001, pp. 357-362

.

[C13] Y.F. Liu and P. Jain, "**A New Current Sensing Scheme for Zero-Voltage Switching Phase-Shift Bridge Converter**", IEEE International Telecommunications Energy Conference (INTELEC), 2000, pp. 567-573

.

[C12] Y. Xi, P. Jain and Y.F. Liu, " **A Precisely Regulated Multiple Output Forward Converter Topology**", IEEE Applied Power Electronics Conference (APEC), 2000, pp. 986-992

.

[C11] Y. Xi, P. Jain, Y.F. Liu and R. Orr, "**A Zero Voltage Switching and Self-Reset Forward Converter Topology**", IEEE Applied Power Electronics Conference (APEC), 1999, pp. 827-833

.

[C10] S. Mangat, Y. Xi, P. Jain and Y.F. Liu, "**A Modified Asymmetrical Pulse-Width-Modulated Resonant DC/DC Converter Topology**", IEEE Power Electronics Specialists Conference (PESC), 1998, pp. 662-668

.

[C9] Y. Xi, P. Jain, G. Joos and Y.F. Liu, " **An Improved Zero Voltage Switching Flyback Converter Topology**", IEEE Power Electronics Specialists Conference (PESC), 1998, pp. 923-929

.

[C8] G. Moschopoulos, P. Jain, G. Joos and Y.F. Liu, "**A Single Stage Vero Voltage Switched PWM Full-Bridge Converter with Power Factor Correction**", IEEE Applied Power Electronics Conference (APEC), 1997, pp. 457-463

.

[C7] G. Moschopoulos, P. Jain, G. Joos and Y.F. Liu, "**A Zero-Voltage Switched PWM Boost Converter with an Energy Feedforward Auxiliary Circuit**", IEEE Power Electronics Specialists Conference (PESC), 1996, pp. 76-82

.

[C6] Y.F. Liu and P.C. Sen, " **A General Unified Large Signal Model for Current Programmed DC-To-DC Converter**", IEEE Industry Application Society Conference, 1994, pp. 1106-1112

.

[C5] Y.F. Liu and P.C. Sen, "**New Class-E DC-to-DC Converter Topologies with Constant Switching Frequency**", IEEE Industry Application Society Conference, 1993, pp. 1090-1097

.

[C4] Y.F. Liu and P.C. Sen, "**Source Reactance Lossless Switch (SRLS) for Soft Switching Converters with Constant Switching Frequency**", IEEE Industry Application Society Conference, 1992, pp. 710-719

.

[C3] Y.F. Liu, P.C. Sen and S. Huang, " **Function Control - A novel Strategy to Achieve Improved Performance of the DC-to-DC Switching Regulators**", IEEE Industry Application Society Conference, 1991, pp. 971-976

.

[C2] H. Qu, Y.F. Liu and S. Huang, "**Sliding-Mode Controlled Cuk Switching Regulator with Fast Response and First Order Dynamic Characteristic**", IEEE Power Electronics Specialists Conference (PESC), 1989, pp. 124-129

.

[C1] Y.F. Liu and S. Huang, "**Function Control and its Application in DC-DC Switching Regulator**", IEEE Power Electronics Specialists Conference (PESC), 1988, pp. 377-383

.

## Patents

[P25] Y. F. Liu and Z. Hu, "**Interleaved Resonant Converter**", US Patent, patent number 9,729,070 B2, Aug 8, 2017

[P24] Y. F. Liu "**Ripple Cancellation Converter with High Power Factor**", US Patent, patent number 9,419,510 B2, Aug 16, 2016

[P23] M. Shepertycky, Q. Li and Y. F. Liu, "**Biomechanical Electrical Power Generation Apparatus**" US Patent, patent number 9,407,125 B2, Aug 2, 2016

[P22] H. Miao, Y.F. Liu, R. Hu, "**High Efficiency Regulator and Method**", US Patent, patent number 9,337,641 B2, May 10, 2016

[P21] H. Miao, Y.F. Liu, "**Dual Frequency Control Buck Boost Regulator with a Pass Through Band**", US Patent, patent number 9,122,287 B2, Sep 1, 2015

[P20] H. Miao, Y.F. Liu, R. Hu, "**High Efficiency Power Regulator and Method**", US Patent, patent number 8,717,717 B2, May 6, 2014

[P19] Z. Zhang, Y.F. Liu, **"Current Source Gate Driver",** US Patent, patent number 8,085,083 B2, Dec. 27, 2011

.

[P18] Y.F. Liu, E. Meyer,**"DC-DC Converter with Improved Dynamic Response",** US Patent, patent number 8,054,058 B2, Nov. 8, 2011

.

[P17] R.K. Orr, Y.F. Liu,**"Distributed Power Supply Arrangement"**, US Patent, patent number 7,936,088 B2, May 3,2011

.

[P16] R.K. Orr, Y.F. Liu, **"Distributed Power Supply Arrangement",** US Patent, patent number 7,622,824 B2, Nov. 24, 2009

.

[P15] Z. Yang, Y.F. Liu,**"Resonant Gate Drive Circuits"**, US Patent, patent number 7,612,602 B2, Nov. 3, 2009

.

[P14] Y.F. Liu, Z. Yang, W. Eberie,**"Resonant Gate Drive Circuits"**, US Patent, patent number 7,598,792 B2, Oct. 6, 2009

.

[P13] W. Zhang, Y.F. Liu, B. Wu,**"Parallel Current Mode Control Using a Direct Duty Cycle Algorithm with Low Computational Requirements to Perform Power Factor Correction"** US Patent, patent number 7,514,913 B2, Apr. 7, 2009

.

[P12] Y.F. Liu, K. Xu, **"Resonant Gate Drive Circuit with Centre-Tapped Transformer"** US Patent, patent number 7,453,292 B2, Nov. 18, 2008

.

[P11] W. Zhang, Y.F. Liu, B. Wu**, "Parallel Current Mode Control Using a Direct Duty Cycle Algorithm with Low Computational Requirements to Perform Power Factor .Correction"**, US Patent, patent number 7,317,625 B2, Jan. 8, 2008

.

[P10] Y.F. Liu, S. Ye,**"Non-Isolated DC-DC Converters with Direct Primary to Load Current",** US Patent, patent number 7,307,857 B2, Dec. 11, 2007

.

[P9] Y.F. Liu, S. Ye,**"Non Isolated DC-DC Converters with Direct Primary To Load Current",** US Patent, patent number 7,110,265 B2, Sept. 19, 2006

.

[P8] Y.F. Liu, S. Ye, **"Isolated DC-DC Converters"**, US Patent, patent number 7,079,403 B2, Jul. 18, 2006

.

[P7] Y.F. Liu, R. Orr, K. Xu,**"Apparatus and Method of Controlling Low Frequency Load Currents Drawn From a DC Source in a Telecommunications Systems",** US Patent, patent number 6,980,783 B2, Dec. 27, 2005

.

[P6] R.K. Orr, Y.F. Liu, D.A. Brown, R. Duvnjak,**"Signal and Power Transformers Coupling Arrangements"**, US Patent, patent number 6,911,746 B2, Jun. 28, 2005

.

[P5] R.K. Orr, Y.F. Liu, R.P. Colbeck, D.A. Brown, H.F. Horwitz,**"Power Supply Controller",** US Patent, patent number 6,850,048 B2, Feb. 1, 2005

.

[P4] R.K. Orr, Y.F. Liu, **"DC Converters"**, US Patent, patent number 6,771,518 B2, Aug. 3, 2004

.

[P3] P.K. Jain, Y.F. Liu, **"Topology and Control Method for Power Factor Correction"**, US Patent, patent number 6,344, 986 B1, Feb. 5, 2002

.

[P2] P. Jain, Y.F. Liu, S. Mangat, **"Asymmetrical Pulse Width Modulated Resonant DC-DC Converter with Compensating Circuitry",** , US Patent, patent number 6,097,614, Aug. 1, 2000

.

[P1] P.K. Jain, Y.F. Liu, Y. Xi, **"Flyback Converter with Soft Switching using Auxiliary Switch and Resonant Circuit**", US Patent, patent number 6,005,782, Dec. 21, 1999

.