TY - GEN
T1 - Interleaved Flyback Converter with GaN Power Devices
AU - Wang, Guan Shiun
AU - Liang, Tsorng Juu
AU - Lai, Jian Hao
N1 - Funding Information:
ACKNOWLEDGMENT This work was financially supported by the Hierarchical Green-Energy Materials (Hi-GEM) Research Center, from The Featured Areas Research Center Program within the framework of the Higher Education Sprout Project by the Ministry of Education (MOE) in Taiwan.
Publisher Copyright:
© 2018 IEEE.
PY - 2018/12/26
Y1 - 2018/12/26
N2 - In this thesis, a high output current DC-DC converter with wide input voltage range based on GaN device is implemented. Generally, the volume of converter can be reduced and power density can be improved with higher switching frequency. However, the switching losses will be increased at the higher switching frequency conditions. Therefore, the characteristic of the wide band-gap device with fast switching is applied to reduce switching losses. The topology of an interleaved flyback converter with leakage inductance energy recycled is selected in this thesis. Two series capacitors are connected with input side and the voltage of each capacitor is half of input voltage. Besides, the energy stored in leakage inductance can be recycled to these two capacitors through the clamp diodes. Moreover, the system efficiency can be improved with the interleaved control method and the synchronous rectification technique. Finally, an interleaved flyback with leakage inductance energy recycled based on GaN device is implemented. The specifications of the input voltage range and output are 18V DC to 60 V DC and 5 V/30 A, respectively. The highest efficiency is 94.2% at the light load condition.
AB - In this thesis, a high output current DC-DC converter with wide input voltage range based on GaN device is implemented. Generally, the volume of converter can be reduced and power density can be improved with higher switching frequency. However, the switching losses will be increased at the higher switching frequency conditions. Therefore, the characteristic of the wide band-gap device with fast switching is applied to reduce switching losses. The topology of an interleaved flyback converter with leakage inductance energy recycled is selected in this thesis. Two series capacitors are connected with input side and the voltage of each capacitor is half of input voltage. Besides, the energy stored in leakage inductance can be recycled to these two capacitors through the clamp diodes. Moreover, the system efficiency can be improved with the interleaved control method and the synchronous rectification technique. Finally, an interleaved flyback with leakage inductance energy recycled based on GaN device is implemented. The specifications of the input voltage range and output are 18V DC to 60 V DC and 5 V/30 A, respectively. The highest efficiency is 94.2% at the light load condition.
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U2 - 10.1109/PEAC.2018.8589969
DO - 10.1109/PEAC.2018.8589969
M3 - Conference contribution
AN - SCOPUS:85061004708
T3 - Proceedings - 2018 IEEE International Power Electronics and Application Conference and Exposition, PEAC 2018
BT - Proceedings - 2018 IEEE International Power Electronics and Application Conference and Exposition, PEAC 2018
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2018 IEEE International Power Electronics and Application Conference and Exposition, PEAC 2018
Y2 - 4 November 2018 through 7 November 2018
ER -