TY - GEN
T1 - Constant On-Time Variable Frequency Control for a Novel Switched-Capacitor Converter
AU - Li, Xiangke
AU - Wu, Xiaohua
AU - Deng, Fei
AU - Li, Weilin
AU - Yang, Lei
N1 - Publisher Copyright:
© 2018 IEEE.
PY - 2018/8/27
Y1 - 2018/8/27
N2 - Due to the requirement for high power density and high integration, the development of traditional inductive switching power converter has encountered bottlenecks. Switch-capacitor (SC) converter is the development tendency for the DC-DC converter. This paper proposed a novel two-stage SC converter. It is designed to convince the flying capacitors sustain lower voltage stress. Meanwhile, the control method adopts a constant 'on-time' of the switches that is less than the time constant τ of charging circuit. It does not need to adjust duty-ratio to control output power. The simulation results show that the control method could reject external interference of the two-stage SC converter immediately. The conclusions can be can be made from simulation results that the constant on-time variable frequency (COTVF) control method could improve dynamic response speed which enable the converter works in a wide range.
AB - Due to the requirement for high power density and high integration, the development of traditional inductive switching power converter has encountered bottlenecks. Switch-capacitor (SC) converter is the development tendency for the DC-DC converter. This paper proposed a novel two-stage SC converter. It is designed to convince the flying capacitors sustain lower voltage stress. Meanwhile, the control method adopts a constant 'on-time' of the switches that is less than the time constant τ of charging circuit. It does not need to adjust duty-ratio to control output power. The simulation results show that the control method could reject external interference of the two-stage SC converter immediately. The conclusions can be can be made from simulation results that the constant on-time variable frequency (COTVF) control method could improve dynamic response speed which enable the converter works in a wide range.
KW - constant on-time variable frequency (COTVF) control
KW - high efficiency
KW - low capacitor voltage stress
KW - Switched-capacitor (SCC) converter
UR - http://www.scopus.com/inward/record.url?scp=85053838468&partnerID=8YFLogxK
U2 - 10.1109/PEDG.2018.8447808
DO - 10.1109/PEDG.2018.8447808
M3 - 会议稿件
AN - SCOPUS:85053838468
SN - 9781538667057
T3 - 2018 9th IEEE International Symposium on Power Electronics for Distributed Generation Systems, PEDG 2018
BT - 2018 9th IEEE International Symposium on Power Electronics for Distributed Generation Systems, PEDG 2018
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 9th IEEE International Symposium on Power Electronics for Distributed Generation Systems, PEDG 2018
Y2 - 25 June 2018 through 28 June 2018
ER -
