TY - GEN
T1 - A novel high step-down interleaved converter with coupled inductor
AU - Martinez, Wilmar
AU - Imaoka, Jun
AU - Itoh, Yuki
AU - Yamamoto, Masayoshi
AU - Umetani, Kazuhiro
PY - 2016/9/20
Y1 - 2016/9/20
N2 - Nowadays, high power density has become essential in networking, telecommunications and computing applications. Additionally, the electronic equipment used in these applications requires a very-low voltage feeding even when its power supply has a much higher voltage rating. Therefore, high step-down converters with high power density performance are required for these applications. Consequently, a novel two-phase interleaved high step-down converter is proposed in order to fulfill the requirements of high power density and high step-down conversion ratio of these applications. The proposed converter addresses the objective by a particular coupled inductor where three windings are only installed in one core. As a result, the proposed converter can achieve higher step-down ratio than the conventional topologies by adding a winding and two switches to the interleaved two phase buck converter, besides the coupled-inductor configuration. In this paper, the novel topology is introduced and analyzed in order to find its conversion ratio operation. Then, the proposed topology is compared to conventional topologies and some improved high step-down converters recently proposed. Finally, the proposed converter is experimentally validated and the results revealed that the proposed converter shows higher step-down conversion ratio than the conventional buck converter with a further increment of 40% in the conversion ratio when the converter is operating at a duty cycle of 30% and ratio of turns of 2.
AB - Nowadays, high power density has become essential in networking, telecommunications and computing applications. Additionally, the electronic equipment used in these applications requires a very-low voltage feeding even when its power supply has a much higher voltage rating. Therefore, high step-down converters with high power density performance are required for these applications. Consequently, a novel two-phase interleaved high step-down converter is proposed in order to fulfill the requirements of high power density and high step-down conversion ratio of these applications. The proposed converter addresses the objective by a particular coupled inductor where three windings are only installed in one core. As a result, the proposed converter can achieve higher step-down ratio than the conventional topologies by adding a winding and two switches to the interleaved two phase buck converter, besides the coupled-inductor configuration. In this paper, the novel topology is introduced and analyzed in order to find its conversion ratio operation. Then, the proposed topology is compared to conventional topologies and some improved high step-down converters recently proposed. Finally, the proposed converter is experimentally validated and the results revealed that the proposed converter shows higher step-down conversion ratio than the conventional buck converter with a further increment of 40% in the conversion ratio when the converter is operating at a duty cycle of 30% and ratio of turns of 2.
KW - Coupled-Inductor
KW - High Step-Down Converter
KW - Power Density
KW - Step-Down Conversion Ratio
UR - http://www.scopus.com/inward/record.url?scp=84991020767&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84991020767&partnerID=8YFLogxK
U2 - 10.1109/INTLEC.2015.7572421
DO - 10.1109/INTLEC.2015.7572421
M3 - Conference contribution
AN - SCOPUS:84991020767
T3 - INTELEC, International Telecommunications Energy Conference (Proceedings)
BT - 2015 IEEE International Telecommunications Energy Conference, INTELEC 2015
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2015 IEEE International Telecommunications Energy Conference, INTELEC 2015
Y2 - 18 October 2015 through 22 October 2015
ER -