TY - GEN
T1 - Adaptive Constant On-Time Buck Converters Based on Frequency Stabilization
AU - Rui, Liu
AU - Xue, Xia
AU - Ting, Chen
AU - Zhe, Zheng
AU - Yanwei, Xiong
AU - Zhitong, Chen
N1 - Publisher Copyright:
© 2025 IEEE.
PY - 2025
Y1 - 2025
N2 - This paper proposes an adaptive constant on-time buck converter based on frequency stabilization. By adding a voltage-type frequency-locked loop to the control loop, the proposed converter improves the stability and accuracy of the switching frequency under different load conditions, and is beneficial to the power supply of switching frequency sensitive circuits. In this work, we first convert the switching frequency to voltage, and then stabilize this voltage to a reference voltage, which is used to stabilize the on-time control of the buck converter. Finally, a stable switching frequency is implemented in a wide load range. The technology adopted in this paper is 0.18 μm CMOS process. The experimental simulation results show that the frequency deviation of the proposed converter is within 0.18% with load range changing from 0.1 A to 5 A.
AB - This paper proposes an adaptive constant on-time buck converter based on frequency stabilization. By adding a voltage-type frequency-locked loop to the control loop, the proposed converter improves the stability and accuracy of the switching frequency under different load conditions, and is beneficial to the power supply of switching frequency sensitive circuits. In this work, we first convert the switching frequency to voltage, and then stabilize this voltage to a reference voltage, which is used to stabilize the on-time control of the buck converter. Finally, a stable switching frequency is implemented in a wide load range. The technology adopted in this paper is 0.18 μm CMOS process. The experimental simulation results show that the frequency deviation of the proposed converter is within 0.18% with load range changing from 0.1 A to 5 A.
KW - Buck DC-DC converter
KW - adaptive constant on-time
KW - frequency-locked loop
KW - voltage-type
KW - wide load range
UR - https://www.scopus.com/pages/publications/105007656187
U2 - 10.1109/EESPE63401.2025.10987175
DO - 10.1109/EESPE63401.2025.10987175
M3 - 会议稿件
AN - SCOPUS:105007656187
T3 - 2025 IEEE International Conference on Electronics, Energy Systems and Power Engineering, EESPE 2025
SP - 144
EP - 148
BT - 2025 IEEE International Conference on Electronics, Energy Systems and Power Engineering, EESPE 2025
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2025 IEEE International Conference on Electronics, Energy Systems and Power Engineering, EESPE 2025
Y2 - 17 March 2025 through 19 March 2025
ER -