TY - GEN
T1 - Design and Implementation of 1 MHz DC-DC LLC Resonant Converter with GaN Enhancement Mode HEMT
AU - Lai, Chih Chia
AU - Liang, Tsorng Juu
AU - Tseng, Wei Jing
AU - Chen, Kai Hui
AU - Chen, Shi Quan
N1 - Funding Information:
This research is supported by the National Science and Technology Council in Taiwan under project number 111-3116-F-006 -006 -
Publisher Copyright:
© 2022 IEEE.
PY - 2022
Y1 - 2022
N2 - Gallium Nitride power transistor is the power devices with fast switching characteristics. This feature allows the converters to reduce switching losses for operating at higher frequency. A 1 MHz LLC half bridge resonant converter with GaN enhancement mode HEMT (GaN E-HEMT) is implemented. The power density of the power converter is improved with higher switching frequency and achieve higher efficiency with soft switching technique. The operating principle of half bridge LLC resonant converter is discussed and the characteristics and gate driver circuit requirements of the wide bandgap devices are investigated. Finally, the digital signal processor, TMS320F28035, is used to realize the laboratory prototype with the input voltage 400 V, the output voltage 12 V, and rated output power 240W. The synchronous rectifier is used on the secondary side to reduce conduction loss to improve efficiency. The experimental results show that efficiency can be as high as 94.1% at 50% load and 92.1% at full load.
AB - Gallium Nitride power transistor is the power devices with fast switching characteristics. This feature allows the converters to reduce switching losses for operating at higher frequency. A 1 MHz LLC half bridge resonant converter with GaN enhancement mode HEMT (GaN E-HEMT) is implemented. The power density of the power converter is improved with higher switching frequency and achieve higher efficiency with soft switching technique. The operating principle of half bridge LLC resonant converter is discussed and the characteristics and gate driver circuit requirements of the wide bandgap devices are investigated. Finally, the digital signal processor, TMS320F28035, is used to realize the laboratory prototype with the input voltage 400 V, the output voltage 12 V, and rated output power 240W. The synchronous rectifier is used on the secondary side to reduce conduction loss to improve efficiency. The experimental results show that efficiency can be as high as 94.1% at 50% load and 92.1% at full load.
UR - https://www.scopus.com/pages/publications/85150444300
UR - https://www.scopus.com/pages/publications/85150444300#tab=citedBy
U2 - 10.1109/SPEC55080.2022.10058291
DO - 10.1109/SPEC55080.2022.10058291
M3 - Conference contribution
AN - SCOPUS:85150444300
T3 - 2022 IEEE 7th Southern Power Electronics Conference, SPEC 2022
BT - 2022 IEEE 7th Southern Power Electronics Conference, SPEC 2022
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 7th IEEE Southern Power Electronics Conference, SPEC 2022
Y2 - 5 December 2022 through 8 December 2022
ER -