ZVS Flyback Converter With Isolated And Non-isolated Outputs

The advancement of semiconductor technology lead to the requirement of multi-output dc-dc converter. The basic principle, analysis and design of a new topology dc-dc converter having isolated and non isolated outputs are presented in this paper. The circuit comprises of two non-isolated outputs having same ground and one isolated output on a second secondary. The switching pattern for the converter devices is generated using TMS320F28335 digital controller. The voltage stress on the primary switches of this converter is low and the regulation switch for auxiliary output is used for achieving zero voltage switching (ZVS) over the entire load range. The validity of the proposed topology is confirmed by the simulation results, carried out using PSIM software, obtained for three outputs with 12V,100mA; 6.6V,0.7A; and 5V,1.2A for set top box application.

[1]  Amrita Vishwa.  Analysis of a Quasi Resonant Switch Mode Power Supply for Low Voltage Applications , 2013 .

[2]  Adriano Peres,et al.  Design and implementation of a DC-DC flyback converter to feed a class a tube amplifier , 2011, XI Brazilian Power Electronics Conference.

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

[4]  Tarik Erfidan,et al.  Design and implementation of flyback converters , 2010, 2010 5th IEEE Conference on Industrial Electronics and Applications.

[5]  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.

[6]  C. Mullett,et al.  Improving the Regulation of Multi-Output Flyback Converters , 2009, 2009 Twenty-Fourth Annual IEEE Applied Power Electronics Conference and Exposition.

[7]  Muhammad H. Rashid,et al.  Power Electronics: Circuits, Devices and Applications , 1993 .

[8]  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.

[10]  M. Vijaya Kumar,et al.  Soft switched flyback converter for SMPS applications , 2013, 2013 International Conference on Control Communication and Computing (ICCC).

[11]  Qian Zhao-ming.  A Novel Multi-output Forward-flyback Converter with Secondary Side Post Regulation , 2005 .

[12]  Luca Weisz,et al.  Power Electronics Converters Applications And Design , 2016 .