Single-stage QR AC–DC converter based on buck–boost and flyback circuits

In this study, a single-stage quasi-resonant (QR) AC–DC converter based on buck–boost and flyback circuits is proposed. The forestage buck–boost circuit works in discontinuous conduction mode to achieve a high-input power factor (PF), and the backstage flyback converter, working in QR mode, is responsible for energy transfer. The QR switch mode can improve the efficiency of the converter by decreasing the switch turn-on losses. The single-stage topology can reduce the cost and raise the reliability of the system. The detailed design process is described in this study, and a 50 W prototype was developed that has a maximum PF higher than 0.99 and a maximum efficiency of 90.91% in nominal working conditions.

[1]  Liang Jia,et al.  High power factor single stage flyback converter for dimmable LED driver , 2015, 2015 IEEE Energy Conversion Congress and Exposition (ECCE).

[2]  Jae-Yeon Choi,et al.  A Novel Single-Stage AC-DC Converter to Supply Sustain Power for Plasma Display Panels , 2011, Journal of Display Technology.

[3]  Xinbo Ruan,et al.  Boost-Flyback Single-Stage PFC Converter with Large DC Bus Voltage Ripple , 2009, 2009 Twenty-Fourth Annual IEEE Applied Power Electronics Conference and Exposition.

[4]  Jong-Woo Kim,et al.  Design on topologies for high efficiency two-stage AC-DC converter , 2012, Proceedings of The 7th International Power Electronics and Motion Control Conference.

[5]  Paolo Mattavelli,et al.  Optimal Trajectory Control of LLC Resonant Converters for LED PWM Dimming , 2014, IEEE Transactions on Power Electronics.

[6]  Kay-Soon Low,et al.  A single-switch high voltage quasi-resonant DC-DC converter for a pulsed plasma thruster , 2015, 2015 IEEE 11th International Conference on Power Electronics and Drive Systems.

[7]  Bong-Hwan Kwon,et al.  High-performance plasma-display-panel 'sustain' power supply , 2005 .

[8]  Dianguo Xu,et al.  A Single-Stage LED Driver Based on Interleaved Buck–Boost Circuit and LLC Resonant Converter , 2015, IEEE Journal of Emerging and Selected Topics in Power Electronics.

[9]  Gun-Woo Moon,et al.  A New Control Method of Interleaved Single-Stage Flyback AC–DC Converter for Outdoor LED Lighting Systems , 2013, IEEE Transactions on Power Electronics.

[10]  Xiaogao Xie,et al.  A new primary side controlled high power factor single-stage flyback LED driver , 2012, 2012 IEEE Energy Conversion Congress and Exposition (ECCE).

[11]  Y. Jang,et al.  A new soft-switched PFC boost rectifier with integrated flyback converter for stand-by power , 2004, Nineteenth Annual IEEE Applied Power Electronics Conference and Exposition, 2004. APEC '04..

[12]  Moon-Young Kim,et al.  Analysis and design of Boost-LLC converter for high power density AC-DC adapter , 2013, 2013 IEEE ECCE Asia Downunder.

[13]  Gun-Woo Moon,et al.  Boost integrated flyback AC-DC converter with valley fill circuit for LED light bulb , 2012, Proceedings of The 7th International Power Electronics and Motion Control Conference.

[14]  J. M. Alonso,et al.  Analysis and experimental results of a single-stage high-power-factor electronic ballast based on flyback converter , 1999 .

[15]  M. A. Dalla Costa,et al.  Analysis of low-frequency current ripple transmission in series-resonant LED drivers , 2015 .

[16]  Yen-Shin Lai,et al.  Novel circuit design for two-stage AC/DC converter to meet standby power regulations , 2009 .

[17]  Yu-Lung Ke,et al.  Single-Stage Power-Factor-Correction Circuit with Flyback Converter to Drive LEDs for Lighting Applications , 2010, 2010 IEEE Industry Applications Society Annual Meeting.

[18]  Chwan-Lu Tseng,et al.  Design and Implementation of a Single-Stage High-Efficacy LED Driver with Dynamic Voltage Regulation , 2013, 2013 IEEE International Conference on Systems, Man, and Cybernetics.

[19]  Marco A. Dalla Costa,et al.  Integrated Buck-Flyback Converter as a High-Power-Factor Off-Line Power Supply , 2008, IEEE Transactions on Industrial Electronics.

[20]  David M. Otten,et al.  Two-Stage Power Conversion Architecture Suitable for Wide Range Input Voltage , 2015, IEEE Transactions on Power Electronics.

[21]  Tsorng-Juu Liang,et al.  Analysis of integrated boost-flyback step-up converter , 2005 .

[22]  Yim-Shu Lee,et al.  Adding active clamping and soft switching to boost-flyback single-stage isolated power-factor-corrected power supplies , 1997 .

[23]  Marian K. Kazimierczuk,et al.  Isolated Two-Transistor Zeta Converter With Reduced Transistor Voltage Stress , 2011, IEEE Transactions on Circuits and Systems II: Express Briefs.

[24]  Dan M. Sable,et al.  Use of leading-edge modulation to transform boost and flyback converters into minimum-phase-zero systems , 1991 .

[25]  M. Kazimierczuk,et al.  Two-transistor Zeta-flyback DC-DC converter with reduced transistor voltage stress , 2010 .