TY - GEN
T1 - An Optimization Control Method for Instantaneous Current Suppression of Dual Buck LED Driver
AU - Sang, Xikun
AU - Gao, Shanshan
AU - Wang, Yijie
AU - Xu, Dianguo
N1 - Publisher Copyright:
© 2020 IEEE.
PY - 2020/10/10
Y1 - 2020/10/10
N2 - In this paper, a dual-Buck circuit is adopted as LED driver, which has simple structure with high utilization rate of the switch. At the same time, the switching frequency is increased to reduce the volume of the converter. An optimized control method with gradually increased duty cycle is proposed to solve the problem of the large peak current, ensuring the output power of the system while suppressing the current stress. Besides, an optimized planar magnetic component design method is adopted to reduce magnetic component losses effectively by using the variable width winding. The topology principle and the optimization process are analyzed in detail. Finally, combined with gallium nitride devices, a prototype with 1MHz switching frequency, 60W output power, and 94.1% full load efficiency is built to verify the accuracy of theoretical analysis.
AB - In this paper, a dual-Buck circuit is adopted as LED driver, which has simple structure with high utilization rate of the switch. At the same time, the switching frequency is increased to reduce the volume of the converter. An optimized control method with gradually increased duty cycle is proposed to solve the problem of the large peak current, ensuring the output power of the system while suppressing the current stress. Besides, an optimized planar magnetic component design method is adopted to reduce magnetic component losses effectively by using the variable width winding. The topology principle and the optimization process are analyzed in detail. Finally, combined with gallium nitride devices, a prototype with 1MHz switching frequency, 60W output power, and 94.1% full load efficiency is built to verify the accuracy of theoretical analysis.
KW - LED driver
KW - dual-Buck
KW - peak current suppression
KW - variable width winding
UR - https://www.scopus.com/pages/publications/85101000002
U2 - 10.1109/IAS44978.2020.9334920
DO - 10.1109/IAS44978.2020.9334920
M3 - 会议稿件
AN - SCOPUS:85101000002
T3 - 2020 IEEE Industry Applications Society Annual Meeting, IAS 2020
BT - 2020 IEEE Industry Applications Society Annual Meeting, IAS 2020
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2020 IEEE Industry Applications Society Annual Meeting, IAS 2020
Y2 - 10 October 2020 through 16 October 2020
ER -