# Books

[B1] Z. Zhang, Y. F. Liu, "

**High Frequency MOSFET Gate Drivers: Technologies and Applications**," IET. 2017.# Journal Publications

[J102] Y. -F. Liu and D. Tan, "

**A Discussion on Ultra-High Efficiency and Ultra-High Power Density DC-DC Converter Technologies**," IEEE Journal of Emerging and Selected Topics in Power Electronics, 2023.[J101] M. Forouzesh, Y. -F. Liu and P. C. Sen, "

**A Line Cycle Synchronous Rectification Strategy Based on Time-Domain Analysis for Single-Stage AC-DC LLC Converters**," IEEE Transactions on Power Electronics, vol. 38, no. 4, pp. 5077-5091, April 2023.[J100] M. Shepertycky, Y. -F. Liu and Q. Li, "

**Design and Evaluation of a Load Control System for Biomechanical Energy Harvesters and Energy-Removing Exoskeletons**," IEEE/ASME Transactions on Mechatronics, vol. 28, no. 2, pp. 990-1001, April 2023.[J99] G. Li, D. Yang, B. Zhou, Y. -F. Liu and H. Zhang, "

**A Topology-Reconfigurable Fault-Tolerant Two-and-Single Stage AC-DC Converter for High Reliability Applications**," IEEE Transactions on Industrial Electronics, vol. 70, no. 4, pp. 3708-3716, April 2023.[J98] X. Zhou, L. Wang, Y. Gan, H. Luo, Y. -F. Liu and P. C. Sen, "

**Accurate Analysis and Design of the Circuit Parameters of LLC DC-DC Converter with Synchronous Rectification**," IEEE Transactions on Power Electronics, vol. 37, no. 12, pp. 15051-15065, Dec. 2022.[J97] G. Li, D. Yang, B. Zhou, Y.-F. Liu and H. Zhang, "

**Integration of Three-Phase LLC Resonant Converter and Full Bridge Converter for Hybrid Modulated Multi-Outputs Topology**," IEEE Journal of Emerging and Selected Topics in Power Electronics, vol. 10, no. 5, pp. 5844-5856, Oct. 2022.[J96] M. Shepertycky, S. Burton, A. Dickson, Y.-F. Liu and Q. Li, "

**Removing Energy with an Exoskeleton Reduces the Metabolic Cost of Walking**,"*Science,*Vol. 372, No. 6545, May 2021, pp. 957-960.[J95] X. Zhou, B. Sheng, W. Liu, Y. Chen, L. Wang, Y.-F. Liu and P. C. Sen, "

**A High-Efficiency High-Power-Density On-Board Low-Voltage DC-DC Converter for Electric Vehicles (EVs) Application**," IEEE Transactions on Power Electronics, Vol. 36, No. 11, pp. 12781-12794, Nov. 2021.[J94] S. Webb, T. Liu and Y. -F. Liu, "

**Zero Inductor-Voltage (ZIV) Multilevel Bus Converter**," IEEE Transactions on Power Electronics, Vol. 36, vol. 36, no. 10, pp. 11565-11578, Oct. 2021.[J93] M. Forouzesh and Y. -F. Liu, "

**Interleaved LCLC Resonant Converter with Precise Current Balancing Over a Wide Input Voltage Range**," IEEE Transactions on Power Electronics, Vol. 36, No. 9, pp. 10330-10342, Sept. 2021.[J92] X. Zhou, Y. Wang, L. Wang, Y. -F. Liu and P. C. Sen, "

**A Soft-switching Transformerless DC-DC Converter with Single Input Bipolar Symmetric Outputs**," IEEE Transactions on Power Electronics, Vol. 36, No. 8, pp. 8640-8646, Aug. 2021.[J91] X. Zhou, X. Duo, Y. Wang, L. Wang, Y. -F. Liu and P. C. Sen, "

**An Electrolytic Capacitor-Free Half Bridge Class-D Audio Amplifier System Without Bus-Voltage Pumping**," IEEE Transactions on Power Electronics, Vol. 36, No. 8, pp. 9221-9236, Aug. 2021.[J90] S. Webb and Y. -F. Liu, "

**A novel intermediate bus converter topology for cutting edge data center applications**," Chinese Journal of Electrical Engineering, Vol. 6, No. 4, pp. 3-14, Dec. 2020.[J89] R. Y. Sun, S. Webb and Y. -F. Liu, "

**Flying capacitor design considerations for a 48-to-12 V, 35 a split-phase dickson SC converter**," Chinese Journal of Electrical Engineering, Vol. 6, No. 4, pp. 28-41, Dec. 2020.[J88] P. Fang, S. Webb, Y. Chen, Y.F. Liu and P.C. Sen, "

**A Multiplexing Ripple Cancellation LED Driver with True Single-Stage Power Conversion and Flicker-free Operation**," IEEE Transactions on Power Electronics, Vol. 34, No. 10, Oct. 2019, pp. 10105-10120[J87] P. Fang, B. Sheng, S. Webb, Y. Zhang and Y.F. Liu, "

**LED Driver Achieves Electrolytic Capacitor-Less and Flicker-Free Operation with an Energy Buffer Unit**," IEEE Transactions on Power Electronics, Vol. 34, No. 7, July 2019, pp 6777-6793.[J86] P. Fang, S. Webb, Y.F. Liu and P.C. Sen, "

**Single Stage LED Driver Achieves Electrolytic Capacitor-less and Flicker-free Operation with Unidirectional Current Compensator**," IEEE Transactions on Power Electronics, Vol. 34, No. 7, July 2019, pp 6760-6776.[J85] X. Zhou, J. Xu, S. Zhong and Y.F. Liu, "

**Soft Switching Symmetric Bipolar Outputs DC-Transformer (DCX) for Eliminating Power Supply Pumping of Half Bridge Class-D Audio Amplifier**," IEEE Transactions on Power Electronics, Vol. 34, No. 7, July 2019, pp 6440-6455.[J84] Y. Chen, H. Wang, Z. Hu, Y.F. Liu, X. Liu, J. Afsharian and Z. Yang, "

**LCLC Converter with Optimal Capacitor Utilization of Hold Up Mode Operation**," IEEE Transactions on Power Electronics, Vol. 34, No. 4, March 2019, pp 2385 - 2396.[J83] L. Wang, W. Liu, Y. F. Liu and D. Malcolm, "

**An Integrated Power Module Based on Power-System-In-Inductor Structure**," IEEE Transactions on Power Electronics, Vol. 33, No. 9, September 2018, pp 7904-7915.[J82] 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. 33, No. 7, July 2018, pp 5754-5772.[J81] Y. Zhang, J. Liu, X. Li, X. Ma, S. Zhou, H. Wang and 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, January 2018, pp 606-628.[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, January 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[J78] 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] 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.[J76] 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[J75] 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[J74] 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[J73] 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.[J72] J. P. Martin, M. Shepertycky, Y. F. Liu, and Q. Li, "

**Lower Limb-Driven Energy Harvester: Modeling, Design, and Performance Evaluation**." ASME.*J. Med. Devices*. December 2016; 10(4): 041005.[J71] 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.[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.[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[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[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[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[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.[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.[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.[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.[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[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[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[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.[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[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.[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.[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.[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.[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.[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.[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.[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.[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[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[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[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[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[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[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[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.[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[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[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.[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.[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.[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[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[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[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[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

[C192] M. Forouzesh, Y. -F. Liu and P. C. Sen, "

**An Instantaneous Power Balancing Control With Power Factor Correction for Single-Stage Three-Phase AC-DC Converters**," in*IEEE Energy Conversion Congress and Exposition (ECCE)*, Detroit, MI, USA, 2022, pp. 1-8.[C191] M. Forouzesh, Y. -F. Liu and P. C. Sen, "

**A Reconfigurable Single-Stage Three-Phase Electric Vehicle DC Fast Charger Compatible With Both 400V and 800V Automotive Battery Packs**," in*IEEE European Conference on Power Electronics and Applications (EPE'22 ECCE Europe)*, 2022, pp. 1-11.[C190] M. Forouzesh, Y. -F. Liu and P. C. Sen, "

**Efficiency Improvement of Single-Stage AC-DC LLC Converter Using a Line Cycle Synchronous Rectifier (SR) Driving Strategy**," in*IEEE European Conference on Power Electronics and Applications (EPE'22 ECCE Europe)*, 2022, pp. P.1-P.10.[C189] Y. Chen, B. He, W. Liu, B. Sheng, Y. -F. Liu and P. C. Sen, "

**Power Cycle Modulation Control of LLC Resonant Converters for Wide Voltage Gain Range Applications**," in*IEEE Applied Power Electronics Conference and Exposition (APEC), 2022, pp. 1780-1786*.[C188] M. Forouzesh, Y. -F. Liu and P. C. Sen, "

**A Novel Soft-Switched Three-Phase Three-Wire Isolated AC-DC Converter With Power Factor Correction**," in*IEEE Applied Power Electronics Conference and Exposition (APEC), 2022, pp. 887-894*.[C187] B. He, Y. Chen, W. Liu, B. Sheng, Y. -F. Liu and P. C. Sen, "

**Investigation and Reduction of Common Mode Current in Center-Tapped Transformer of LLC Resonant Converters**," in*IEEE Applied Power Electronics Conference and Exposition (APEC), 2022, pp. 1686-1691*.[C187] M. Forouzesh, Y. -F. Liu and P. C. Sen, "

**Implementation of an Isolated Phase-Modular-Designed Three-Phase PFC Rectifier Based on Single-Stage LLC Converter**," in*IEEE Energy Conversion Congress and Exposition (ECCE), 2021, pp. 2266-2273*.[C186] R. Sun, S. Webb, Y. -F. Liu and P. C. Sen, "

**Optimization and Design of a 48-to-12 V, 35 A Split-Phase Dickson Switched-Capacitor Converter**," in*IEEE Applied Power Electronics Conference and Exposition (APEC), 2021, pp. 1900-1907*.[C185] M. Forouzesh, B. Sheng, Y. Chen and Y. -F. Liu, "

**Current Sharing Analysis of Interleaved LCLC Resonant Converter**," in*IEEE Energy Conversion Congress and Exposition (ECCE)*, Detroit, MI, USA, 2020, pp. 5422-5429.[C184] W. Liu, A. Yurek, B. Sheng, Y. Chen, Y. -F. Liu and P. C. Sen, "

**A Single Stage 1.65kW AC-DC LLC Converter with Power Factor Correction (PFC) for On-Board Charger (OBC) Application**," in*IEEE Energy Conversion Congress and Exposition (ECCE)*, Detroit, MI, USA, 2020, pp. 4594-4601.[C183] Y. Chen, W. Liu, A. Yurek, X. Zhou, B. Sheng and Y. -F. Liu, "

**Design and Optimization of A High Power Density Low Voltage DC-DC Converter for Electric Vehicles**," in*IEEE Energy Conversion Congress and Exposition (ECCE)*, Detroit, MI, USA, 2020, pp. 1244-1251.[C182] S. Webb and Y. -F. Liu, "

**A 12 Switch Zero-Inductor Voltage Converter Topology For Next Generation Datacenters**," in*IEEE Energy Conversion Congress and Exposition (ECCE)*, Detroit, MI, USA, 2020, pp. 143-150.[C181] S. Webb and Y. -F. Liu, "

**A Quasi Output Voltage Regulation Technique for the Zero InductorVoltage Converter**," in IEEE Energy Conversion Congress and Exposition (ECCE), Detroit, MI, USA, 2020, pp. 930-937.[C180] B. Sheng, X. Zhou, W. Liu, Y. Chen, Y. -F. Liu and P. C. Sen, "

**Analysis and Control of Three-Phase Interleaved SCC-LLC Resonant Converter Load Sharing Considering Component Tolerance**," in*IEEE Energy Conversion Congress and Exposition (ECCE)*, Detroit, MI, USA, 2020, pp. 385-392.[C179] M. Forouzesh, B. Sheng and Y. Liu, "

**Interleaved SCC-LCLC Converter with TO-220 GaN HEMTs and Accurate Current Sharing for Wide Operating Range in Data Center Application**," in*IEEE Applied Power Electronics Conference and Exposition (APEC)*, New Orleans, LA, USA, 2020, pp. 482-489.[C178] S. Webb and Y. Liu, "

**A Zero Inductor-Voltage 48 V to 12V/70A Converter for Gata Centers with 99.1% Peak Efficiency and 2.5kW/in3 Power Density**," in*IEEE Applied Power Electronics Conference and Exposition (APEC)*, New Orleans, LA, USA, 2020, pp. 1858-1865.[C177] B. Sheng, X. Zhou, W. Liu, A. Yurek, Y. Chen, Y.F. Liu, P. C. Sen, "

**Adaptive Hysteresis Comparison Control of Load Sharing for Three-Phase Interleaved SCC-LLC Converter**," in*IEEE Applied Power Electronics Conference and Exposition (APEC)*, New Orleans, LA, USA, 2020, pp. 3060-3067.[C176] X. Zhou, B. Sheng, W. Liu, Y. Chen, A. Yurek, Y.F. Liu, P. C. Sen and K. L. V. Iyer, "

**A High Efficiency High Power-Density LLC DC-DC Converter for Electric Vehicles (EVs) On-Board Low Voltage DC-DC Converter (LDC) Application**," in*IEEE Applied Power Electronics Conference and Exposition (APEC)*, New Orleans, LA, USA, 2020, pp. 1339-1346.[C175] F. Poloei, A. Akbari and Y. Liu, "

**A Moving Window Least Mean Square Approach to State of Charge Estimation for Lithium Ion Batteries**," in*1st Global Power, Energy and Communication Conference (GPECOM)*, Nevsehir, Turkey, 2019, pp. 398-402.[C174] P. Fang, Y.F. Liu and P.C. Sen, "

**A Multiplexing Off-Line LED Driver Achieves High Power Factor and Flicker-Free Operation**," in*IEEE Energy Conversion Congress & Expo (ECCE) 2019*, Baltimore, MD, USA, Sept 2019, pp. 1148-1154.[C173] X. Zhou, B. Sheng, W. Liu, Y. Chen, A. Yurek, Y.F. Liu and P.C. Sen, "

**Analysis and Design of SR Driver Circuit for LLC DC-DC Converter Under High Load Current Application**," in*IEEE Energy Conversion Congress & Expo (ECCE) 2019*, Baltimore, MD, USA, Sept 2019, pp. 1375-1381.[C172] W. Liu, A. Yurek. Y. Chen. B. Sheng, X. Zhou and Y.F. Liu, "

**A High Power Density Thermal Managment Approach Using Multi-PCB Distributed Cooling (MPDC) Structure**," in*IEEE Energy Conversion Congress & Expo (ECCE) 2019*, Baltimore, MD, USA, Sept 2019, pp. 4181-4188.[C171] S. Webb, T. Liu and Y.F. Liu, "

**A Comparison of Multilevel "Zero Inductor-Voltage" Converters for Data Center Applications**," in*IEEE Energy Conversion Congress & Expo (ECCE) 2019*, Baltimore, MD, USA, Sept 2019, pp. 89-96.[C170] A. Yurek, W. Liu and Y. Liu, "

**Thermal Analysis of Power Module Packaging Using Power-System-in-Inductor (PSI2) Technology**," in IEEE*Control and Modeling for Power Electronics (COMPEL)*, Toronto, ON, Canada, 2019, pp. 1-8.[C169] A. Yurek, W. Liu, Y. Chen, B. Sheng, X. Zhou and Y. Liu, "

**A Novel Integrated Multi-Layer Cooling (IMLC) Structure for High Power Density Applications**," in IEEE*Control and Modeling for Power Electronics (COMPEL)*, Toronto, ON, Canada, 2019, pp. 1-7.[C168] P. Fang, Y. Liu and P. C. Sen, "

**A Multiplexing Ripple Cancellation LED Driver with True Single-Stage Power Conversion and Flicker-free Operation**," in*IEEE Applied Power Electronics Conference and Exposition (APEC)*, Anaheim, CA, USA, 2019, pp. 3414-3420.[C167] A. Yurek, W. Liu and Y. Liu, "

**An In-Depth Analysis of Power-System-in-Inductor (PSI2) Technology for Power Module Packaging**," in*IEEE Applied Power Electronics Conference and Exposition (APEC)*, Anaheim, CA, USA, 2019, pp. 2794-2801.[C166] S. Webb and Y. Liu, "

**12 Switch Zero-Inductor Voltage Converter Topology**," in*IEEE Applied Power Electronics Conference and Exposition (APEC)*, Anaheim, CA, USA, 2019, pp. 2189-2196.[C165] S. Webb, T. Liu and Y. Liu, "

**A Two-Phase Zero-Inductor Voltage Converter for Datacenter and Server Applications**," in*IEEE Applied Power Electronics Conference and Exposition (APEC)*, Anaheim, CA, USA, 2019, pp. 2255-2262.[C164] Y. Chen and Y.F. Liu, "

**Power Adapter with Line Voltage Control for USB Power Delivery**," in*IEEE Applied Power Electronics Conference and Exposition (APEC)*, Anaheim, CA, USA, 2019, pp. 2054-2060.[C163] B. Sheng, Y. Chen, H. Wang, Y.F. Liu and P.C. Sen, "

**High Efficiency Wide Input Voltage Range LCLC Resonant Converter using Nonlinear Frequency Controllers**," in*IEEE Energy Conversion Congress & Expo (ECCE) 2018*, Portland, Oregon, USA, Sept 2018, pp. 1435-1441[C162] P. Fang, B. Sheng, Y.F. Liu and Y. Zhang, "

**LED Driver Achieves Electrolytic Capacitor-Less and Flicker-Free Operation with an Energy Buffer Unit**," in*IEEE Energy Conversion Congress & Expo (ECCE) 2018*, Portland, Oregon, USA, Sept 2018, pp. 5109-5116[C161] P. Fang, B. Sheng, W. Liu, Y.F. Liu and P.C. Sen, "

**Parallel Energy Buffering LED Driver Achieves Electrolytic Capacitor-Less and Flicker-Free Operation**," in*IEEE Energy Conversion Congress & Expo (ECCE) 2018*, Portland, Oregon, USA, Sept 2018, pp. 5117-5124[C160] S. Webb, T. Liu and Y.F. Liu, "

**Zero inductor voltage multilevel bus converter**," in*Applied Power Electronics Conference and Exposition (APEC) 2018*, San Antonio, Texas, USA, March 2018, pp. 2175-2182[C159] Y. Qiu, W. Liu, P. Fang, Y.F. Liu and P. C. Sen, "

**A mathematical guideline for designing an AC-DC LLC converter with PFC**," in*Applied Power Electronics Conference and Exposition (APEC) 2018*, San Antonio, Texas, USA, March 2018, pp. 2001-2008[C158] Y. Chen, H. Wang, Y.F. Liu and S. Liu, "

**Line power extension method for capacitor reduction for AC-DC application**," in*Applied Power Electronics Conference and Exposition (APEC) 2018*, San Antonio, Texas, USA, March 2018, pp. 2070-2076[C157] Y. Chen, H. Wang, Y.F. Liu, P. C. Sen and X. Liu, "

**Improving SRC with capacitor bypassing method for universal AC-DC adapter**," in*Applied Power Electronics Conference and Exposition (APEC) 2018*, San Antonio, Texas, USA, March 2018, pp. 746-753[C156] H. Wang, Y. Chen,B. Sheng, Y.F. Liu and P. C. Sen, "

**Two-phase three-dimension common inductor LLC resonant converter with automatic current sharing**," in*Applied Power Electronics Conference and Exposition (APEC) 2018*, San Antonio, Texas, USA, March 2018, pp. 3575-3582[C155] H. Wang, Y. Chen, Y.F. Liu and P. C. Sen, "

**A general multi-phase coupled-resonant-tank resonant converter**," in*Applied Power Electronics Conference and Exposition (APEC) 2018*, San Antonio, Texas, USA, March 2018, pp. 2183-2190[C154] W. Liu, L. Wang and Y.F. Liu, "

**A power converter integration approach with a multi-functional heat sink shaped inductor**," in*Applied Power Electronics Conference and Exposition (APEC) 2018*, San Antonio, Texas, USA, March 2018, pp. 1249-1255[C153] Y. Zhang, W. Liu, L. Kou, Y.F. Liu and C. Keimel, "

**Design of a high power MEMS relay with zero voltage switching and isolated power and signal transfer**," in*Applied Power Electronics Conference and Exposition (APEC) 2018*, San Antonio, Texas, USA, March 2018, pp. 1974-1980.[C152] F. Poloei, A. Bakhshai and Y. Liu, "

**A novel online adaptive fast simple state of charge estimation for Lithium Ion batteries**," in*IEEE 6th International Conference on Renewable Energy Research and Applications (ICRERA)*, San Diego, CA, 2017, pp. 914-918.[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. 5712-5719.[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. 1366-1373[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*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*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*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*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*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*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*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[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[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[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[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[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[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[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[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[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[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[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[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[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[C91] L. Wang, Y. Pei, X. Yang, Z. Wang and Y.F. Liu, "

**A Horizontal-winding Multi-permeability Distributed Air-gap Inductor**" in*Applied Power Electronics Conference and Exposition (APEC)2012, Orlando, Florida, USA, 2012, pp. 994-1001*[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[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[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[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[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[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[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[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[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[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[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[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[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[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[C75] Y.F. Liu and L. Jia "

**Performance Enhancement with Digital Control Technologies for DC/DC Switching Converters**," in*12th IEEE Workshop on Control and Modeling for Power Electronics (COMPEL 2010)*, University of Colorado, Boulder, Colorado, USA. pp.1-8[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.[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**", in*IEEE Applied Power Electronics Conference and Exposition (APEC) 2010*, Palm Springs, California, February 2010, pp. 1482-1486.[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**", in*IEEE Applied Power Electronics Conference and Exposition (APEC) 2010*, Palm Springs, California, February 2010, pp. 702-709.[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.[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.[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.[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[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.[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.[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.[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.[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.[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.[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.[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.[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.[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.[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[C56] W. Eberle, Z. Zhang, Y.F. Liu, and P.C. Sen "

PESC presentation

**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

[C55] E. Meyer and Y.F. Liu, "

PESC presentation

**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

[C54] Z. Zhang, W. Eberle, Z. Yang, Y.F. Liu and P.C. Sen, "

PESC presentation

**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

[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[C52] E. Meyer, G. Feng and Y.F. Liu, "

APEC poster

**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

[C51] S. Ye, W. Eberle and Y.F. Liu, "

APEC presentation

**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

[C50] W. Eberle, Y.F. Liu and P.C. Sen, "

IECON presentation

**A Resonant Gate Drive Circuit with Reduced MOSFET Switching and Gate Losses**", IEEE Industrial Electronics Society Conference (IECON), 2006, Paris, France, pp. 1745-1750IECON presentation

[C49] K.Xu, Y.F. Liu and P.C. Sen, "

IECON presentation

**A New Resonang Gate Drive Circuit Utilizing Leakage Inductance of Transformer**", IEEE Industrial Electronics Society Conference (IECON), 2006, Paris, France, pp. 1933-1937IECON presentation

[C48] G. Feng, E. Meyer and Y.F. Liu, "

PESC presentation

**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. 1740-1746PESC presentation

[C47] Z. Zhang, Z. Yang, S. Ye and Y.F. Liu, "

PESC presentation

**Topology and Analysis of a New Resonant Gate Driver**", IEEE Power Electronics Specialists Conference (PESC), 2006, Jeju, South Korea, pp. 1453-1459PESC presentation

[C46] W. Eberle, Y.F. Liu and P.C. Sen, "

CCECE presentation

**A Simple Large Signal Model for Isolated DC-DC Converters**", IEEE Canadian Conference on Electrical and Computer Engineering (CCECE), Ottawa, Canada, May 2006, pp. 1267-1270CCECE presentation

[C45] W. Eberle, P.C. Sen and Y.F. Liu, "

APEC presentation

**A Novel High Performance Resonant Gate Drive Circuit with Low Circulating Current**", IEEE Applied Power Electronics Conference (APEC), 2006, Dallas, Texas, USA, pp. 324-330APEC presentation

[C44] Z. Yang, S. Ye and Y.F. Liu, "

APEC presentation

**A New Resonant Gate Drive Circuit for Synchronous Buck Converter**", IEEE Applied Power Electronics Conference (APEC), 2006, Dallas, Texas, USA, pp. 52-58APEC presentation

[C43] Z. Yang, S. Ye and Y.F. Liu, "

APEC presentation

**A New Dual Channel Resonant Gate Drive Circuit for Synchronous Rectifiers**", IEEE Applied Power Electronics Conference (APEC), 2006, Dallas, Texas, USA, pp. 756-762APEC presentation

[C42] G. Feng, W. Eberle and Y.F. Liu, "

APEC poster

**A Digital Control Algorithm for DC-DC Converters Under Input Voltage Changes**", IEEE Applied Power Electronics Conference (APEC), 2006, Dallas, Texas, USA, pp. 1430-1436APEC poster

[C41] W. Eberle, P.C. Sen and Y.F. Liu, "

IECON presentation

**A New Resonant Gate Drive Circuit with Efficient Energy Recovery and Low Conduction Loss**", IEEE Industrial Electronics Society Conference (IECON), 2005, pp. 650-655IECON presentation

[C40] K. Xu, Y.F. Liu and P.C. Sen, "

IECON presentation

**A New Resonant Gate Drive Circuit with Centre-Tapped Transformer**", IEEE Industrial Electronics Society Conference (IECON), 2005, pp. 639-644IECON presentation

[C39] A. Perry, G. Feng, Y.F. Liu and P.C. Sen, "

IECON presentation

**A New Analysis and Design Method for Fuzzy Logic Controllers Used in Power Converters**", IEEE Industrial Electronics Society Conference (IECON), 2005, pp. 1006-1011IECON presentation

[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[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[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[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[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[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[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[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[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[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[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[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[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[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

[P68] M. Forouzesh, X. Zhou and Y. F. Liu, "

**Three-phase single-stage soft-switching AC-DC converter with power factor correction**", US Patent, patent number 11,451,139 B2, Sept. 20, 2022[P67] Y. Chen and Y. F. Liu, "

**Resonant Power Converters and Control Methods for Wide Input and Output Voltage Ranges**", US Patent, patent number 11,394,307 B2, Jul. 19, 2022[P66] Y. Chen and Y. F. Liu, "

**High Voltage Start-Up Circuit For Switching Power Supplies**", US Patent, patent number 11,349,385 B2, May 31, 2022[P65] Y. Chen and Y. F. Liu, "

**Circuits and Methods Using Power Supply Output Voltage To Power A Primary Side Auxiliary Circuit**", US Patent, patent number 11,108,330 B2, Aug. 31, 2021[P64] Z. Li, Y. Fu and Y. F. Liu, "

**Packaging For Lateral High Voltage GaN Power Devices**", US Patent, patent number 11,107,755 B2, Aug. 31, 2021[P63] Y. Chen, H. Wang, Y. F. Liu, J. Afsharian and B. Gong, "

**Simplified Hybrid PWM/PFM Control Method For sLLC Converter**", US Patent, patent number 11,063,520 B2, Jul. 13, 2021[P62] S. D. Webb and Y. F. Liu, "

**Zero Inductor Voltage Converter Topology with Improved Switch Utilization**", US Patent, patent number 11,043,899 B2, Jun. 22, 2021[P61] H. Wang, Y. Chen and Y. F. Liu, "

**Power Converter Topologies and Control Methods for Wide Input and Output Voltage Ranges**", US Patent, patent number 10,944,329 B2, Mar. 9, 2021[P60] Y. Chen, H. Wang, Y. F. Liu, J. Afsharian and B. Gong, "

**120-Hz Ripple Reduction with PIR Controller for LLC Converter**", US Patent, patent number 10,944,317 B2, Mar. 9, 2021[P59] Z. Li, Y. F. Liu, W. Fu and W. T. Ng, "

**Vertical-side Solder Method and Package for Power GaN Devices**", US Patent, patent number 10,939,553 B2, Mar. 2, 2021[P58] Z. Li, G. Luo, Y. Fu, W. T. Ng and Y. F. Liu, "

**Defect-Tolerant Layout and Package for GaN Devices**", US Patent, patent number 10,892,254 B2, Jan. 12, 2021[P57] Z. Li, Y. F. Liu, W. Fu and W. T. Ng, "

**High-Side Gate Driver For Gallium Nitride Integrated Circuits**", US Patent, patent number 10,855,273 B2, Dec. 1, 2020[P56] Z. Li, Y. Fu and Y. F. Liu, "

**Gate Drivers and Voltage Regulators for Gallium Nitride Devices and Integrated Circuits**", US Patent, patent number 10,686,436 B2, Jun. 16, 2020[P55] Z. Li, Y. Fu and Y. F. Liu, "

**Gate Drivers and Voltage Regulators for Gallium Nitride Devices and Integrated Circuits**", US Patent, patent number 10,686,411 B2, Jun. 16, 2020[P54] H. Wang, Y. Chen, Y. F. Liu, J. Afsharian and B. Gong, "

**Converters with Hold-Up Operation**", US Patent, patent number 10,637,363 B2, Apr. 28, 2020[P53] Y. Chen and Y. F. Liu, "

**Line Power Extension for Capacitor Size Reduction in AC-DC Converters**", US Patent, patent number 10,630,197 B2, Apr. 21, 2020[P52] Z. Li, Y. Fu, W. T. Ng and Y. F. Liu, "

**High Power Gallium Nitride Devices and Structures**", US Patent, patent number 10,615,094 B2, Mar. 10, 2020[P51] T. Liu and Y. F. Liu, "

**Two-Phase Three-Level Converter and Controller Therefor**", US Patent, patent number 10,498,236 B2, Dec. 3, 2019[P50] H. Wang, Y. Chen, Y. F. Liu, J. Afsharian, Z. Yang and B. Gong, "

**Modular Parallel Technique for Resonant Converter**", US Patent, patent number 10,491,123 B2, Nov. 26, 2019[P49] Y. F. Liu and Z. Hu, "

**Interleaved Resonant Converter**", US Patent, patent number 10,476,397 B2, Nov. 12, 2019[P48] T. Liu, Y. F. Liu, "

**Multi-Stage Multilevel DC-DC Step-Down Converter**", US Patent, patent number 10,468,965 B2 Nov. 5, 2019[P47] H. Wang and Y. F. Liu, "

**Single-Phase Five-Level Active Clamping Converter Unit And Converter**", US Patent, patent number 10,447,173 B2, Oct. 15, 2019[P46] H. Mao, Y. F. Liu and R. Wu, "

**High Efficiency Power Regulator And Method**", US Patent, patent number 10,411,596 B2, Sep 10, 2019[P45] H. Wang and Y. F. Liu, "

**Single-Phase Four-Level Inverter Circuit Topology And Three-Phase Four-Level Inverter Circuit Topology**", US Patent, patent number 10,389,271 B2, Aug 20, 2019[P44] Z. Li, W. Tung Ng and Y. F. Liu, "

**Power Electronic And Optoelectronic Device With Interdigitated Electrodes**", US Patent, patent number 10,388,743 B2, Aug 20, 2019[P43] H. Wang and Y. F. Liu, "

**Five-Level Half Bridge Inverter Topology With High Voltage Utilization Ratio**", US Patent, patent number 10,312,825 B2, Jun 4, 2019[P42] H. Wang and Y. F. Liu, "

**Half Bridge Inverter Units And Inverter Thereof**", US Patent, patent number 10,277,146 B2, Apr 30, 2019[P41] Y. Qiu and Y. F. Liu, "

**Current Ripple Sensing Controller For A Signle-Stage LED Driver**", US Patent, patent number 10,256,712 B2, Apr 9, 2019[P40] H. Wang and Y. F. Liu, "

**Five-Level Inverter Topology With High Voltage Utilization Ratio**", US Patent, patent number 10,250,159 B2, Apr 2, 2019[P39] Y. Qiu and Y. F. Liu, "

**High-Power Single-Stage LED Driver with Bipolar Ripple Cancellation**", US Patent, patent number 10,243,478 B2, Mar 26, 2019[P38] Y. Chen, H. Wang, Y. F. Liu, Z. Li and Y. Fu, "

**Hybrid Full Bridge-Voltage Doubler Rectifier and Single Stage LLC Converter Thereof**", US Patent, patent number 10,135,359 B2, Nov 20, 2018[P37] Y. Chen, H. Wang, Y. F. Liu, Z. Li and Y. Fu, "

**Hybrid Full Bridge-Voltage Doubler Rectifier and Single Stage LLC Converter Thereof**", US Patent, patent number 10,116,233 B2, Oct 30, 2018[P36] Y. F. Liu, S. Claydon, C. F. Kiemel and C. M. Giovaniello, "

**Auxilary Circuit for Micro-Electromechanical System Relay Circuit**", US Patent, patent number 10,083,811 B2, Sept 25, 2018[P35] Z. Wu, D. Douglas and Y. F. Liu, "

**Power Supply Module**", US Patent, patent number 10,080,297 B2, Sept 18, 2018[P34] Y. F. Liu, G. Claydon, C. F. Kiemel and C. M. Glovanniello, "

**Micro-Electromechanical System Relay Circuit**", US Patent, patent number 10,068,733 B2, Sept 4, 2018[P33] Y. F. Liu, "

**Ripple Cancellation Converter with High Power Factor**", US Patent, patent number 10,015,849 B2, July 3, 2018[P32] P. Fang and Y. F. Liu, "

**Primary Side Controlled LED Driver with Ripple Cancellation**", US Patent, patent number 10,015,848 B2, July 3, 2018[P31] Y. F. Liu, S. Claydon, C. F. Kiemel and C. M. Giovaniello, "

**Isolated Control Circuit and Driver for Micro-Electromechanical System Switch**", US Patent, patent number 9,997,317 B2, June 12, 2018[P30] H. Wang and Y. F. Liu, "

**Hybrid Modulation Strategy for Multilevel Inverters**", US Patent, patent number 9,973,108 B2, May 15, 2018[P29] H. Wang and Y. F. Liu, "

**Five-Level Topology Units and Inverter Thereof****", US Patent, patent number 9,966,875 B2, May 8, 2018**[P28] P. Fang and Y. F. Liu, "

**Energy Channeling Single Stage Power Converter**", US Patent, patent number 9,917,524 B2, Mar 13, 2018[P27] H. Zhang, Y. F. Liu and D. Malcolm, "

**Manufacturing Method for a Power Supply Module**", US Patent, patent number 9,907,184 B2, Feb 27, 2018[P26] H. Zhang, D. Malcolm and Y. F. Liu, "

**Coil with Variable Inner Diameters and Electronic Power Module Made from the Coil**", US Patent, patent number 9,773,607 B2, Sep 26, 2017[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 Respons**e", 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. Eberle, "

**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