A new ZVS multi-output flyback converter with synchronous switches

This paper presents a new multi-output converter. It consists of two synchronous switches in the secondary side for two outputs with same ground. The primary switches control the main output voltage and the synchronous switches in the secondary side control the auxiliary output voltage. The main advantages of the proposed converter are that the primary switches have low voltage stress, the secondary regulation switch for auxiliary output can achieve the zero-voltage switching (ZVS) under entire load conditions, and the low conduction loss can be obtained by using the synchronous switches. The operational principle, analysis and design considerations of the proposed converter are presented in this paper. The validity of this study is confirmed by the experimental results from dual outputs (24V/8A and 12V/4A) prototype.

[1]  Zhaoming Qian,et al.  A novel multioutput forward-flyback converter with secondary side post regulation , 2004, 2004 IEEE 35th Annual Power Electronics Specialists Conference (IEEE Cat. No.04CH37551).

[2]  Koosuke Harada,et al.  Investigation on the Ripple Voltage and the Stability of SR Buck Converters With High Output Current and Low Output Voltage , 2010, IEEE Transactions on Industrial Electronics.

[3]  Yie-Tone Chen,et al.  New multi-output switching converters with MOSFET-rectifier post regulators , 1998, IEEE Trans. Ind. Electron..

[4]  I. Batarseh,et al.  Zero-voltage-switching buck-flyback isolated DC-DC converter with synchronous rectification , 2006, Twenty-First Annual IEEE Applied Power Electronics Conference and Exposition, 2006. APEC '06..

[5]  Milan M. Jovanovic,et al.  Evaluation of synchronous-rectification efficiency improvement limits in forward converters , 1995, IEEE Trans. Ind. Electron..

[6]  Gun-Woo Moon,et al.  A New PWM-Controlled Quasi-Resonant Converter for a High Efficiency PDP Sustaining Power Module , 2008, IEEE Transactions on Power Electronics.

[7]  Jian Sun,et al.  Comparative Performance Evaluation of Current-Mode Control Schemes Adapted to Asymmetrically Driven Bridge-Type Pulsewidth Modulated DC-to-DC Converters , 2008, IEEE Transactions on Industrial Electronics.

[8]  Sung-Sae Lee,et al.  Coupled Inductor Incorporated Boost Half-Bridge Converter With Wide ZVS Operation Range , 2009, IEEE Transactions on Industrial Electronics.

[9]  Bong-Hwan Kwon,et al.  Asymmetrical PWM half-bridge convertor with independently regulated multiple outputs , 2006 .

[10]  Gun-Woo Moon,et al.  Zero-voltage switching post regulation scheme for multi-output forward converter with synchronous switches , 2009, 2009 IEEE Energy Conversion Congress and Exposition.

[11]  Tomonobu Senjyu,et al.  Control of MW-class PV generation to reduce frequency and tie-line power fluctuations in three control area power system , 2011, 8th International Conference on Power Electronics - ECCE Asia.

[12]  Yungtaek Jang,et al.  Light-Load Efficiency Optimization Method , 2010, IEEE Transactions on Power Electronics.

[13]  Ching Chuen Chan,et al.  Analysis of chaos in current-mode-controlled DC drive systems , 2000, IEEE Trans. Ind. Electron..

[14]  Praveen Jain,et al.  A forward converter topology with independently and precisely regulated multiple outputs , 2003 .

[15]  Yie-Tone Chen.  The overall small-signal model of the synchronous switch postregulator , 1998 .

[16]  Yan-Fei Liu,et al.  A Nonisolated ZVS Asymmetrical Buck Voltage Regulator Module With Direct Energy Transfer , 2009, IEEE Transactions on Industrial Electronics.

[17]  Yie-Tone Chen,et al.  Small-signal analysis of a synchronous-switch post regulator with coupled inductors , 2000, IEEE Trans. Ind. Electron..

[18]  Chern-Lin Chen,et al.  Analysis and design of asymmetrical half bridge flyback converter , 2002 .

[19]  Sang-Kyoo Han,et al.  A high efficiency ZVS PWM asymmetrical half bridge converter for plasma display panel sustaining power module , 2004, 2004 IEEE 35th Annual Power Electronics Specialists Conference (IEEE Cat. No.04CH37551).

[20]  Zhaoming Qian,et al.  Secondary Side Post Regulation Application in Multiple Outputs Flyback Converter , 2005, 2005 International Conference on Power Electronics and Drives Systems.

[21]  Sung-Soo Hong,et al.  A new phase drift anti-islanding method for grid-connected inverter system , 2011, 8th International Conference on Power Electronics - ECCE Asia.