TY - GEN
T1 - Design of high power density DC bus converter based on llc resonant converter with synchronous rectifier
AU - Niu, Huapeng
AU - Pei, Yunqing
AU - Yang, Xu
AU - Wang, Laili
AU - Wang, Zhaoan
PY - 2009
Y1 - 2009
N2 - The LLC resonant converter can easily achieve soft-switching and magnetic components integration that makes it an excellent candidate for DC Bus Converter. In low voltage high output current applications, the design of synchronous rectifier (SR) and transformer is the key issue. A SR driving scheme with less circuit complexity is adopted for switching frequency at the resonant frequency in this paper. Using Magnetic Motive Force (MMF) diagrams both in space and time, the loss model of the center-tapped planar transformer is proposed that provides insight into the mechanism of the skin and proximity losses and that also yields quantitative results. The Finite-Element analysis (FEA) is applied to demonstrate the loss model. A prototype of 1/4 brick, 48V to 12V, 500W output Bus Converter is built to verify the result. 96.6% efficiency at full load and 300W/in3 power density are achieved.
AB - The LLC resonant converter can easily achieve soft-switching and magnetic components integration that makes it an excellent candidate for DC Bus Converter. In low voltage high output current applications, the design of synchronous rectifier (SR) and transformer is the key issue. A SR driving scheme with less circuit complexity is adopted for switching frequency at the resonant frequency in this paper. Using Magnetic Motive Force (MMF) diagrams both in space and time, the loss model of the center-tapped planar transformer is proposed that provides insight into the mechanism of the skin and proximity losses and that also yields quantitative results. The Finite-Element analysis (FEA) is applied to demonstrate the loss model. A prototype of 1/4 brick, 48V to 12V, 500W output Bus Converter is built to verify the result. 96.6% efficiency at full load and 300W/in3 power density are achieved.
UR - https://www.scopus.com/pages/publications/77951101745
U2 - 10.1109/IPEMC.2009.5157446
DO - 10.1109/IPEMC.2009.5157446
M3 - 会议稿件
AN - SCOPUS:77951101745
SN - 9781424435562
T3 - 2009 IEEE 6th International Power Electronics and Motion Control Conference, IPEMC '09
SP - 540
EP - 543
BT - 2009 IEEE 6th International Power Electronics and Motion Control Conference, IPEMC '09
T2 - 2009 IEEE 6th International Power Electronics and Motion Control Conference, IPEMC '09
Y2 - 17 May 2009 through 20 May 2009
ER -