Delta Products - Research and Development

Papers Presented at Major International Technical Meetings

Y. Jang and R. W. Erickson,
"Physical Origins of Input Filter Oscillations in Current Programmed Converter,"
Sixth Annual IEEE Applied Power Electronics Conference, Dallas, TX, March 10-15, 1991.
Y. Jang and R. W. Erickson,
"New Quasi-Square Wave and Multi-Resonant Integrated Magnetic Zero Voltage Switching Converters,"
Twenty-fourth Annual IEEE Power Electronics Specialists Conference, Seattle, Washington, June 20-24, 1993.
Y. Jang and R. W. Erickson,
"New Single-Switch Three-Phase High Power Factor Rectifiers Using Multi-Resonant Zero Current Switching,"
Ninth Annual IEEE Applied Power Electronics Conference, Orlando, FL, February 13-17, 1994.
D. Maksimovic, Y. Jang, and R. W. Erickson,
"Nonlinear Carrier Control for High Power Factor Boost Rectifiers,"
Tenth Annual IEEE Applied Power Electronics Conference, Dallas, TX, March 5-9, 1995.
Y. Jang and R. W. Erickson,
"Analysis and Experimental Results of a 6kW Single-Switch Three-Phase High Power Factor Rectifier
Using Multi-Resonant Zero Current Switching,"
Eleventh Annual IEEE Applied Power Electronics Conference, San Jose, CA, March 3-7, 1996.
Y. Jang, M. M. Jovanovic,
"Novel, Robust Harmonic Injection Method for a Single-Switch 3-Phase Discontinuous-Conduction-Mode Boost Rectifier,"
Twenty-Eighth Annual IEEE Power Electronics Specialists Conference, St. Louis, MO, June 22-27, 1997.
Y. Jang, M. M. Jovanovic,
"Design Considerations and Performance Evaluation of a 6-kW, Single-Switch, Three-Phase, High-Power-
Factor, Multi-Resonant, Zero-Current-Switching Buck Rectifier,"
Nineteenth International Telecommunications Energy Conference, Melbourne, Australia, October 19-24, 1997.
M. M. Jovanovic, Y. Jang,
"A New, Soft-Switched Boost Converter with Isolated Active Snubber,"
Thirteenth Annual IEEE Applied Power Electronics Conference, Anaheim, CA, February 15-19, 1998.
Y. Jang, M. M. Jovanovic,
"A Comparative Study of Single-Switch, Three-Phase, High-Power-Factor Rectifiers,"
Thirteenth Annual IEEE Applied Power Electronics Conference, Anaheim, CA, February 15-19, 1998.
Y. Jang, M. M. Jovanovic,
"Design Considerations and Performance Evaluation of a 3-kW, Soft-Switched Boost Converter with Active Snubber,"
Twentieth International Telecommunications Energy Conference, San Francisco, CA, October 4-8, 1998.
M. M. Jovanovic, Y. Jang,
"A Boost Converter with Novel Active Snubber,"
Fourteenth Annual IEEE Applied Power Electronics Conference, Dallas, TX, March 14-18, 1999.
Y. Jang, M. M. Jovanovic,
"A New Input-Voltage Feedforward Harmonic-Injection Technique With Nonlinear Gain Control For Single-Switch, Three-Phase, DCM Boost Rectifiers,"
Fourteenth Annual IEEE Applied Power Electronics Conference, Dallas, TX, March 14-18, 1999.
Y. Jang, M. M. Jovanovic,
"A New, Soft-Switched, High-Power-Factor Boost Converter with IGBT,"
Twenty First International Telecommunications Energy Conference, Copenhagen, Denmark, June 6-9, 1999.
Y. Jang, M. M. Jovanovic,
"A New Technique for Reducing Switching Losses in Pulse-Width-Modulated Converters,"
Twenty-Ninth Annual IEEE Power Electronics Specialists Conference, Charleston, SC, June 27-July 1, 1999.
.B. Irving, Y. Jang, M. M. Jovanovic,
"A Comparative Study of Soft-Switched CCM Boost Rectifiers and Interleaved Variable-Frequency DCM Boost Rectifier,"
Fifteenth Annual IEEE Applied Power Electronics Conference, New Orleans, February 6-10, 2000.
Y. Jang, M. M. Jovanovic,
"A Contactless Electrical Energy Transmission System for Portable-Telephone Battery Chargers,"
Twenty Second International Telecommunications Energy Conference, Phoenix, Arizona, September 10-14, 2000.
Y.M. Chae, Y. Jang, M. M. Jovanovic, J.S. Gho, G.H. Choe,
"A Novel Mixed Current and Voltage Control Scheme for Inverter Arc Welding Machines,"
Sixteenth Annual IEEE Applied Power Electronics Conference, Anaheim, CA, March 4-8, 2001.
Y. Jang, M. M. Jovanovic,
"A New Two-Inductor Boost Converter with Coupled Inductor,"
Seventeenth Annual IEEE Applied Power Electronics Conference, Dallas, TX, March 10-14, 2002.
Y. Jang, M. M. Jovanovic,
"A New ZVS-PWM Full-Bridge Converter,"
Twenty Fourth International Telecommunications Energy Conference, Montréal, Quebéc, September 29-October 3, 2002.
Y. Jang, M. M. Jovanovic,
"A New Family of Full-Bridge ZVS Converters,"
Eighteenth Annual IEEE Applied Power Electronics Conference, Miami Beach, FL, February 9-13, 2003.
Y. Jang, M. M. Jovanovic,
"A New Three-Level ZVS Converter,"
Eighteenth Annual IEEE Applied Power Electronics Conference, Miami Beach, FL, February 9-13, 2003.
Y. Jang, M. M. Jovanovic,
"A New Soft-Switched DC-DC Front-End Converter for Applications with Wide-Range Input Voltage from Battery Power Sources,"
Twenty Fifth International Telecommunications Energy Conference, Yokohama, Japan, October 19-23, 2003.
Y. Jang, M. M. Jovanovic,
"A New Soft-Switched Contactless Battery Charger With Robust Local Controllers,"
Twenty Fifth International Telecommunications Energy Conference, Yokohama, Japan, October 19-23, 2003.
Y. Jang, D. Dillman, and M. M. Jovanovic,
"A New Soft-Switched PFC Boost Rectifier with Integrated Flyback Converter for Stand-by Power,"
Nineteenth Annual IEEE Applied Power Electronics Conference, Anaheim, Ca, February 22-26, 2004.
Y. Jang, M. M. Jovanovic, K. H. Fang, and Y. M. Chang,
"Soft-Switched High-Power-Factor Boost Converter,"
Twenty Sixth International Telecommunications Energy Conference, Chicago, Illinois, September 19-23, 2004.
.Y. Jang, M. M. Jovanovic, and D. Dillman,
"Hold-Up Time Extension Circuit with Integrated Magnetics,"
Twentieth Annual IEEE Applied Power Electronics Conference, Austin, Texas, March 6-10, 2005.
Y. Jang and M. M. Jovanovic,
"Constant-Frequency Resonant Inverter for AC-Bus Distribution System,"
Twentieth Annual IEEE Applied Power Electronics Conference, Austin, Texas, March 6-10, 2005.
Y. Jang, D. Dillman, and M. M. Jovanovic,
"Soft-Switched PFC Boost Rectifier with Integrated ZVS Two-Switch Forward Converter,"
Twentieth Annual IEEE Applied Power Electronics Conference, Austin, Texas, March 6-10, 2005.
Y. Jang, M. M. Jovanovic and Yuequan Hu,
"Non-Isolated Two-Inductor Boost Converter with Improved EMI Performance,"
Twenty Seventh International Telecommunications Energy Conference, Berlin, Germany, September 18-22, 2005.
Y. Jang and M. M. Jovanovic,
"Isolated Boost Converters,"
Twenty First Annual IEEE Applied Power Electronics Conference, Dallas, Texas, March 19-23, 2006.
Y. Jang, M. M. Jovanovic, and Y. Panov,
"Multi-Phase Buck Converters with Extended Duty Cycle,"
Twenty First Annual IEEE Applied Power Electronics Conference, Dallas, Texas, March 19-23, 2006.
Y. Jang and M. M. Jovanovic,
"A New PWM ZVS Full-Bridge Converter,"
Twenty First Annual IEEE Applied Power Electronics Conference, Dallas, Texas, March 19-23, 2006.
Y. Jang, M. M. Jovanovic,
"Interleaved PFC Boost Converter with Intrinsic Voltage-Doubler Characteristic,"
Thirty Seventh Annual IEEE Power Electronics Specialists Conference, Jeju, Korea, June 18-June 22, 2006.
Y. Jang, D. Dillman, and M. M. Jovanovic,
"Three-Phase Isolated High-Power-Factor Rectifier Using Soft-Switched Two-Switch Forward Converter,"
Twenty Second Annual IEEE Applied Power Electronics Conference, Anaheim, Ca, February 25-March 1, 2007.
.L. Huber, Y. Jang, and M. M. Jovanovic,
"Performance Evaluation of Bridgeless PFC Boost Rectifiers,"
Twenty Second Annual IEEE Applied Power Electronics Conference, Anaheim, Ca, February 25-March 1, 2007.
Y. Jang, D. Dillman, and M. M. Jovanovic,
"Performance Evaluation of Silicon-Carbide MOSFET in Three-Phase High-Power-Factor Rectifier,"
Twenty Ninth International Telecommunications Energy Conference, Rome, Italy, September 30-October 4, 2007.
Y. Jang, M. M. Jovanovic, and D. Dillman,
"Bridgeless PFC Boost Rectifier with Optimized Magnetic Utilization,"
Twenty Third Annual IEEE Applied Power Electronics Conference, Austin, Texas, February 24-28, 2008.
Y. Jang, M. M. Jovanovic, and D. Dillman,
"Light-Load Efficiency Optimization Method,"
Twenty Fourth Annual IEEE Applied Power Electronics Conference, Washington, DC, February 15-19, 2009.
Y. Jang and M. M. Jovanovic,
"Bridgeless Buck PFC Rectifier,"
Twenty Fifth Annual IEEE Applied Power Electronics Conference, Palm Springs, CA, February 21-25, 2010.



		.	. Yungtaek Jang Senior Member of R&D Staff Language .....Fluent in English and native in Korean. Medium skill in Chinese. Education ....Ph.D. Electrical Engineering, University of Colorado, Boulder, 1994. .....M.S. Electrical Engineering, University of Colorado, Boulder, 1991. .....B.S. Electrical Engineering, Yonsei University, Seoul, Korea, 1982. Areas of Specialization .....Power Electronics. Power-Semiconductor Devices. Electronics. Magnetics. Motor Control, Computer-Aided Analysis and Design. Experience Apr. 1996 - present: Senior Member of R&D Staff, Delta Products Corporation, Power Electronics Laboratory, P.O. Box 12173, 5101 Davis Dr., Research Triangle Park, NC 27709. Feb. 1995 - Apr. 1996: Senior Research Engineer, Advanced Energy Industries Inc., 1600 Prospect Parkway, Fort Collins, CO 80525. Feb. 1982 - Oct. 1988: Project Manager and Design Engineer, Hyundai Engineering CO., LTD. Seoul, Korea. Patents Y. Jang, M. Jovanovic "Robust, Harmonic-Injection System for Single-Switch, Three-Phase, Discontinuous-Conduction-Mode Boost Rectifiers," US Patent 5,847,944, December 8 1998. D. Maksimovic, R. W. Erickson, and Y. Jang, "Nonlinear Carrier Controllers for High-Power-Factor Boost Rectification," US Patent 5,867,379, February 2 1999. M. Jovanovic, Y. Jang, "Soft-Switched Boost Converter with Isolated Active Snubber," US Patent 5,959,438, September 28, 1999. M. Jovanovic, Y. Jang, "Boost Converter with Minimum-Component-Count Active Snubber," US Patent 6,028,418, February 22, 2000. Y. Jang, M. Jovanovic, "Harmonic-Injection Control Technique for Three-Phase, Discontinuous-Conduction-Mode, High-Power-Fctor Boost Rectifiers with Improved Lne-Transient Response," US Patent 6,049,473, April 11, 2000. Y. Jang, M. Jovanovic, "Soft-Switching Cell For Reducing Switching Losses In Pulse-Width-Modulated Converters," US Patent 6,051,961, April 18, 2000. Y. Jang, M. Jovanovic, "A Contactless Electrical Energy Transmission System for Portable-Telephone Battery Chargers," US Patent 6,246,599B1, June 12, 2001. Y. Jang, M. Jovanovic, "Two-Inductor Boost Converters," US Patent 6,239,584B1, May 29, 2001. Y. Jang, M. Jovanovic, "Constant Frequency Resonant Inverters with a Pair of Resonant Inductors," US Patent 6,246,599B1, June 12, 2001. Y. Jang, M. Jovanovic "Soft-Switched PWM Full-Bridge Converter," US Patent 6,392,902B1, May 21, 2002. Y. Jang, M. Jovanovic, "Three-Level Soft-Switched Converters," US Patent 6,353,547B1, March 5, 2002. Y. Jang, M. Jovanovic, "Soft-Switched Full-Bridge Converters," US Patent 6,356,462B1, March 12, 2002. Y. Jang, M. Jovanovic "Hold-Up Time Extension Circuits," US Patent 6,504,497B2, January 7, 2003. Y. Jang, M. Jovanovic, "Structure and Method for an Isolated PFC Boost Converter," US Patent 6,906,930B2, June 14, 2005. Y. Jang, M. Jovanovic, "A Contactless Electrical Energy Transmission System Having A Primary Side Current Feedback Control And Soft-Switched Secondary Side Rectifier," US Patent 6,934,167B2, August 23, 2005. M. Jovanovic, Y. Jang, Yu-Ming Chang, Kung-Hui Fang, "Soft-Switched Power Converters," US Patent 6,987,675B2, January 17, 2006. Y. Jang, M. Jovanovic "Full Bridge Converter with ZVS via AC Feedback," US Patent 6,992,902B2, January 31, 2006. Y. Jang, M. Jovanovic, "Electromagnetic Device Having Independent Inductive Components," US Patent 7,161,458B2, January 9, 2007. Y. Jang, M. Jovanovic, "Power System Having Multiple Power Converters with Reduced Switching Loss," US Patent 7,218,081B2, May 15, 2007. Y. Jang, M. Jovanovic, "Non-Isolated Power Conversion System Having Multiple Switching Power Converters," US Patent 7,230,405B2, June 12, 2007. Y. Jang, M. Jovanovic, "Power Factor Correction Rectifier Having Independent Inductive Components," US Patent 7,265,650B2, September 4, 2007. Service to Profession Session Chairman at INTELEC'03 Session Chairman at APEC'99 Session Chairman at PESC'97 Reviewer and Member of Technical Program Committee of IEEE Applied Power Electronics Conference (APEC) since 1995. Reviewer and Member of Technical Program Committee of IEEE Power Electronics Specialist Conference (PESC) since 1996. Reviewer of IEEE Transaction on Power Electronics. Reviewer of IEEE Transaction on Industrial Electronics. Awards IEEE Power Electronics Society Transaction Prize Paper Award for 2009 IEEE Eastern North Carolina Section Outstanding Engineer Award 2003 IEEE Power Electronics Society Transaction Prize Paper Award for 1996 Memberships Senior Member of IEEE Power Electronics Society Senior Member of IEEE Industrial Electronics Society Senior Member of IEEE Industry Application Society Papers Published in Major Technical Journals Y. Jang and R. W. Erickson, "Physical Origins of Input Filter Oscillations in Current Programmed Converter," IEEE Transactions on Power Electronics, Vol. 7, no. 4, pp. 725-733, October 1992. D. Maksimovic, Y. Jang, and R. W. Erickson, "Nonlinear Carrier Control for High Power Factor Boost Rectifiers," IEEE Transactions on Power Electronics, Vol. 11, no. 4, pp. 578-584, July 1996. Y. Jang and R. W. Erickson, "New SingleSwitch Three-Phase High Power Factor Rectifiers Using Multi-Resonant Zero Current Switching," IEEE Transactions on Power Electronics, Vol. 13, no. 1, pp. 194-201, January 1998. .Y. Jang and M. M. Jovanovic, "Novel, Robust Harmonic Injection Method for a Single-Switch 3-Phase Discontinuous-Conduction-Mode Boost Rectifier," IEEE Transactions on Power Electronics, Vol. 13, no. 5, pp. 824-834, September 1998. Y. Jang and M. M. Jovanovic, "A Comparative Study of Single-Switch 3-Phase High-Power-Factor Rectifiers," IEEE Transactions on Industry Application, Vol. 34, no. 6, pp. 1327-1334, November/December 1998. M. M. Jovanovic and Y. Jang, "A New Soft-Switched Boost Converter with Isolated Active Snubber," IEEE Transactions on Industry Application, Vol. 35, no. 2, pp. 496-502, March/April 1999. Y. Jang and M. M. Jovanovic, "A New Input-Voltage Feedforward Harmonic-Injection Technique with Nonlinear Gain Control for Single-Switch, Three-Phase DCM Boost Rectifier," IEEE Transactions on Power Electronics, Vol. 15, no. 2, pp. 268-277, March 2000. M. M. Jovanovic and Y. Jang, "A Novel Active Snubber for High-Power Boost Converter," IEEE Transactions on Power Electronics, Vol. 15, no. 2, pp. 278-284, March 2000. .Y. Jang and M. M. Jovanovic, "A New, Soft-Switched, High-Power-Factor Boost Converter With IGBTs," IEEE Transactions on Power Electronics, Vol. 17, no. 4, pp. 469-476, July 2002. Y. Jang and M. M. Jovanovic, "A Contactless Electrical Energy Transmission System for Portable-Telephone Battery Chargers," IEEE Transactions on Industrial Electronics, Vol. 50, no. 3, pp. 520-527, June 2003. Y. Jang, M. M. Jovanovic, and Y. M. Chang, "A New ZVS-PWM Full-Bridge Converter," IEEE Transactions on Power Electronics, Vol. 18, no. 5, pp. 1122-1129, September 2003. Y. Jang and M. M. Jovanovic, "A New Two-Inductor Boost Converter with Auxiliary Transformer," IEEE Transactions on Power Electronics, Vol. 19, no. 1, pp. 169-175, January 2004. Y. Jang and M. M. Jovanovic, "A New Family of Full-Bridge ZVS converters," IEEE Transactions on Power Electronics, Vol. 19, no. 3, pp. 701-708, May 2004. Y. Jang and M. M. Jovanovic, "A New Three-Level ZVS converter," IEEE Transactions on Power Electronics, Vol. 20, no. 1, pp. 75-81, January 2005. M. M. Jovanovic and Y. Jang , "State-of-the-Art, Single-Phase, Active Power-Factor-Correction Techniques for High-Power Applications - An Overview," IEEE Transactions on Industrial Electronics, Vol. 52, no. 3, pp. 701-708, June 2005. Y. Jang, D. Dillman, and M. M. Jovanovic, "A New Soft-Switched PFC Boost Rectifier with Integrated Flyback Converter for Stand-by Power," IEEE Transactions on Power Electronics, Vol. 21, no. 1, pp. 66-72, January 2006. Y. Jang, M. M. Jovanovic, K. H. Fang, and Y. M. Chang, "Soft-Switched High-Power-Factor Boost Converter" IEEE Transactions on Power Electronics, Vol. 21, no. 1, pp. 98-104, January 2006. Y. Jang and M. M. Jovanovic, "Hold-Up Time Extension Circuit with Integrated Magnetics," IEEE Transactions on Power Electronics, Vol. 21, no. 2, pp. 75-81, March 2006. Y. Jang and M. M. Jovanovic, "Soft-Switched PFC Boost Rectifier with Integrated ZVS Two-Switch Forward Converter," IEEE Transactions on Power Electronics, Vol. 21, no. 6, pp. 1600-1606, November 2006. Y. Jang and M. M. Jovanovic, "A New PWM ZVS Full-Bridge Converter," IEEE Transactions on Power Electronics, Vol. 22, no. 3, pp. 987-994, May 2007. Y. Jang and M. M. Jovanovic, "Interleaved PFC Boost Converter with Intrinsic Voltage-Doubler Characteristic for Universal-Line PFC Front End," IEEE Transactions on Power Electronics, Vol. 22, no. 4, pp. 1394-1401, July 2007. Y. Jang and M. M. Jovanovic, "Isolated Boost Converters," IEEE Transactions on Power Electronics, Vol. 22, no. 4, pp. 1514-1521, July 2007. L. Huber, Y. Jang, and M. M. Jovanovic, "Performance Evaluation of Bridgeless PFC Boost Rectifiers," IEEE Transactions on Power Electronics, Vol. 23, no. 3, pp. 1381-1390, May 2008. Y. Jang and M. M. Jovanovic, "Fully Soft-Switched Three-Stage AC-DC Converter," IEEE Transactions on Power Electronics, Vol. 23, no. 6, pp. 2884-2892, November 2008. Y. Jang and M. M. Jovanovic, "Bridgeless PFC Boost Rectifier with Optimized Magnetic Utilization," IEEE Transactions on Power Electronics, Vol. 24, no. 1-2, pp. 85-93, January-February 2009. Y. Jang and M. M. Jovanovic, "Light-Load Efficiency Optimization Method," IEEE Transactions on Power Electronics, Vol. 25, no. 1, pp. 67-74, January 2010. Papers Presented at Major International Technical Meetings Y. Jang and R. W. Erickson, "Physical Origins of Input Filter Oscillations in Current Programmed Converter," Sixth Annual IEEE Applied Power Electronics Conference, Dallas, TX, March 10-15, 1991. Y. Jang and R. W. Erickson, "New Quasi-Square Wave and Multi-Resonant Integrated Magnetic Zero Voltage Switching Converters," Twenty-fourth Annual IEEE Power Electronics Specialists Conference, Seattle, Washington, June 20-24, 1993. Y. Jang and R. W. Erickson, "New Single-Switch Three-Phase High Power Factor Rectifiers Using Multi-Resonant Zero Current Switching," Ninth Annual IEEE Applied Power Electronics Conference, Orlando, FL, February 13-17, 1994. D. Maksimovic, Y. Jang, and R. W. Erickson, "Nonlinear Carrier Control for High Power Factor Boost Rectifiers," Tenth Annual IEEE Applied Power Electronics Conference, Dallas, TX, March 5-9, 1995. Y. Jang and R. W. Erickson, "Analysis and Experimental Results of a 6kW Single-Switch Three-Phase High Power Factor Rectifier Using Multi-Resonant Zero Current Switching," Eleventh Annual IEEE Applied Power Electronics Conference, San Jose, CA, March 3-7, 1996. Y. Jang, M. M. Jovanovic, "Novel, Robust Harmonic Injection Method for a Single-Switch 3-Phase Discontinuous-Conduction-Mode Boost Rectifier," Twenty-Eighth Annual IEEE Power Electronics Specialists Conference, St. Louis, MO, June 22-27, 1997. Y. Jang, M. M. Jovanovic, "Design Considerations and Performance Evaluation of a 6-kW, Single-Switch, Three-Phase, High-Power- Factor, Multi-Resonant, Zero-Current-Switching Buck Rectifier," Nineteenth International Telecommunications Energy Conference, Melbourne, Australia, October 19-24, 1997. M. M. Jovanovic, Y. Jang, "A New, Soft-Switched Boost Converter with Isolated Active Snubber," Thirteenth Annual IEEE Applied Power Electronics Conference, Anaheim, CA, February 15-19, 1998. Y. Jang, M. M. Jovanovic, "A Comparative Study of Single-Switch, Three-Phase, High-Power-Factor Rectifiers," Thirteenth Annual IEEE Applied Power Electronics Conference, Anaheim, CA, February 15-19, 1998. Y. Jang, M. M. Jovanovic, "Design Considerations and Performance Evaluation of a 3-kW, Soft-Switched Boost Converter with Active Snubber," Twentieth International Telecommunications Energy Conference, San Francisco, CA, October 4-8, 1998. M. M. Jovanovic, Y. Jang, "A Boost Converter with Novel Active Snubber," Fourteenth Annual IEEE Applied Power Electronics Conference, Dallas, TX, March 14-18, 1999. Y. Jang, M. M. Jovanovic, "A New Input-Voltage Feedforward Harmonic-Injection Technique With Nonlinear Gain Control For Single-Switch, Three-Phase, DCM Boost Rectifiers," Fourteenth Annual IEEE Applied Power Electronics Conference, Dallas, TX, March 14-18, 1999. Y. Jang, M. M. Jovanovic, "A New, Soft-Switched, High-Power-Factor Boost Converter with IGBT," Twenty First International Telecommunications Energy Conference, Copenhagen, Denmark, June 6-9, 1999. Y. Jang, M. M. Jovanovic, "A New Technique for Reducing Switching Losses in Pulse-Width-Modulated Converters," Twenty-Ninth Annual IEEE Power Electronics Specialists Conference, Charleston, SC, June 27-July 1, 1999. .B. Irving, Y. Jang, M. M. Jovanovic, "A Comparative Study of Soft-Switched CCM Boost Rectifiers and Interleaved Variable-Frequency DCM Boost Rectifier," Fifteenth Annual IEEE Applied Power Electronics Conference, New Orleans, February 6-10, 2000. Y. Jang, M. M. Jovanovic, "A Contactless Electrical Energy Transmission System for Portable-Telephone Battery Chargers," Twenty Second International Telecommunications Energy Conference, Phoenix, Arizona, September 10-14, 2000. Y.M. Chae, Y. Jang, M. M. Jovanovic, J.S. Gho, G.H. Choe, "A Novel Mixed Current and Voltage Control Scheme for Inverter Arc Welding Machines," Sixteenth Annual IEEE Applied Power Electronics Conference, Anaheim, CA, March 4-8, 2001. Y. Jang, M. M. Jovanovic, "A New Two-Inductor Boost Converter with Coupled Inductor," Seventeenth Annual IEEE Applied Power Electronics Conference, Dallas, TX, March 10-14, 2002. Y. Jang, M. M. Jovanovic, "A New ZVS-PWM Full-Bridge Converter," Twenty Fourth International Telecommunications Energy Conference, Montréal, Quebéc, September 29-October 3, 2002. Y. Jang, M. M. Jovanovic, "A New Family of Full-Bridge ZVS Converters," Eighteenth Annual IEEE Applied Power Electronics Conference, Miami Beach, FL, February 9-13, 2003. Y. Jang, M. M. Jovanovic, "A New Three-Level ZVS Converter," Eighteenth Annual IEEE Applied Power Electronics Conference, Miami Beach, FL, February 9-13, 2003. Y. Jang, M. M. Jovanovic, "A New Soft-Switched DC-DC Front-End Converter for Applications with Wide-Range Input Voltage from Battery Power Sources," Twenty Fifth International Telecommunications Energy Conference, Yokohama, Japan, October 19-23, 2003. Y. Jang, M. M. Jovanovic, "A New Soft-Switched Contactless Battery Charger With Robust Local Controllers," Twenty Fifth International Telecommunications Energy Conference, Yokohama, Japan, October 19-23, 2003. Y. Jang, D. Dillman, and M. M. Jovanovic, "A New Soft-Switched PFC Boost Rectifier with Integrated Flyback Converter for Stand-by Power," Nineteenth Annual IEEE Applied Power Electronics Conference, Anaheim, Ca, February 22-26, 2004. Y. Jang, M. M. Jovanovic, K. H. Fang, and Y. M. Chang, "Soft-Switched High-Power-Factor Boost Converter," Twenty Sixth International Telecommunications Energy Conference, Chicago, Illinois, September 19-23, 2004. .Y. Jang, M. M. Jovanovic, and D. Dillman, "Hold-Up Time Extension Circuit with Integrated Magnetics," Twentieth Annual IEEE Applied Power Electronics Conference, Austin, Texas, March 6-10, 2005. Y. Jang and M. M. Jovanovic, "Constant-Frequency Resonant Inverter for AC-Bus Distribution System," Twentieth Annual IEEE Applied Power Electronics Conference, Austin, Texas, March 6-10, 2005. Y. Jang, D. Dillman, and M. M. Jovanovic, "Soft-Switched PFC Boost Rectifier with Integrated ZVS Two-Switch Forward Converter," Twentieth Annual IEEE Applied Power Electronics Conference, Austin, Texas, March 6-10, 2005. Y. Jang, M. M. Jovanovic and Yuequan Hu, "Non-Isolated Two-Inductor Boost Converter with Improved EMI Performance," Twenty Seventh International Telecommunications Energy Conference, Berlin, Germany, September 18-22, 2005. Y. Jang and M. M. Jovanovic, "Isolated Boost Converters," Twenty First Annual IEEE Applied Power Electronics Conference, Dallas, Texas, March 19-23, 2006. Y. Jang, M. M. Jovanovic, and Y. Panov, "Multi-Phase Buck Converters with Extended Duty Cycle," Twenty First Annual IEEE Applied Power Electronics Conference, Dallas, Texas, March 19-23, 2006. Y. Jang and M. M. Jovanovic, "A New PWM ZVS Full-Bridge Converter," Twenty First Annual IEEE Applied Power Electronics Conference, Dallas, Texas, March 19-23, 2006. Y. Jang, M. M. Jovanovic, "Interleaved PFC Boost Converter with Intrinsic Voltage-Doubler Characteristic," Thirty Seventh Annual IEEE Power Electronics Specialists Conference, Jeju, Korea, June 18-June 22, 2006. Y. Jang, D. Dillman, and M. M. Jovanovic, "Three-Phase Isolated High-Power-Factor Rectifier Using Soft-Switched Two-Switch Forward Converter," Twenty Second Annual IEEE Applied Power Electronics Conference, Anaheim, Ca, February 25-March 1, 2007. .L. Huber, Y. Jang, and M. M. Jovanovic, "Performance Evaluation of Bridgeless PFC Boost Rectifiers," Twenty Second Annual IEEE Applied Power Electronics Conference, Anaheim, Ca, February 25-March 1, 2007. Y. Jang, D. Dillman, and M. M. Jovanovic, "Performance Evaluation of Silicon-Carbide MOSFET in Three-Phase High-Power-Factor Rectifier," Twenty Ninth International Telecommunications Energy Conference, Rome, Italy, September 30-October 4, 2007. Y. Jang, M. M. Jovanovic, and D. Dillman, "Bridgeless PFC Boost Rectifier with Optimized Magnetic Utilization," Twenty Third Annual IEEE Applied Power Electronics Conference, Austin, Texas, February 24-28, 2008. Y. Jang, M. M. Jovanovic, and D. Dillman, "Light-Load Efficiency Optimization Method," Twenty Fourth Annual IEEE Applied Power Electronics Conference, Washington, DC, February 15-19, 2009. Y. Jang and M. M. Jovanovic, "Bridgeless Buck PFC Rectifier," Twenty Fifth Annual IEEE Applied Power Electronics Conference, Palm Springs, CA, February 21-25, 2010. Other Publications Y. Jang, "Physical Origins of Input Flter Oscillations in Current Programmed Converter," M.S. Thesis, University of Colorado, Boulder, 1991. Y. Jang, "Application of ResonantTechnique for Three-Phase High Power Factor Rectification and Integrated Magnetic Converters," Ph.D. Dissertation, University of Colorado, Boulder, 1994. M. M. Jovanovic, Y. Jang, "High Performance Power-Factor-Correction Topologies for Server Applications," HP symposium, CA, 1999. Y. Jang, D. Dillman, and M. M. Jovanovic, "Soft-Switched PFC Boost Rectifier with Integrated Second-Stage Boost Converter for Three-Stage AC-DC Power Supplies," DPEC Seminar, Shanghai, China, 2005. Y. Jang, M. M. Jovanovic, and Y. Panov, "Multi-Phase Buck Converters with Extended Duty Cycle," DPEC Seminar, Shanghai, China, 2006. Y. Jang, M. M. Jovanovic, and D. Dillman, "Performance Evaluation of Bridgeless PFC Boost Rectifier with Low Common-Mode Noise," DPEC Seminar, Shanghai, China, 2006. [ About the Lab ] [ People ] [ Directory ] [ Publications ] [ News ] [ Job Opportunities ]