TY - GEN
T1 - A family of resonant two-switch boosting switched-capacitor converter with ZVS operation and a wide voltage-gain range
AU - Li, Shouxiang
AU - Zheng, Yifei
AU - Smedley, Keyue Ma
AU - Wu, Bin
N1 - Publisher Copyright:
© 2017 IEEE.
PY - 2017/5/17
Y1 - 2017/5/17
N2 - In this paper, a family of Resonant Two-switch Boosting Switched-capacitor Converters (RTBSCs) with ZVS operation and a wide voltage-gain range is proposed. By adding a small resonant inductor to the TBSCs, the two bulky capacitor banks can be replaced by two much smaller resonant capacitors. Further by operating it above the resonant frequency, the transistors are ZVS turned on and diodes are ZCS turned off. The soft switching operation makes it possible to increase the switching frequency without sacrificing the overall efficiency, so the size can be decreased. Moreover, the voltage-gain range of the RTBSCs is increased significantly. As a result, the input-voltage range can be increased if the output voltage is regulated. The operation principle, voltage-gain curves, output characteristics and the voltage/current stress of the resonant tank for this family are analyzed. A 3X RTBSC prototype rated at 20∼130W with a peak efficiency 98% was built to verify the analysis.
AB - In this paper, a family of Resonant Two-switch Boosting Switched-capacitor Converters (RTBSCs) with ZVS operation and a wide voltage-gain range is proposed. By adding a small resonant inductor to the TBSCs, the two bulky capacitor banks can be replaced by two much smaller resonant capacitors. Further by operating it above the resonant frequency, the transistors are ZVS turned on and diodes are ZCS turned off. The soft switching operation makes it possible to increase the switching frequency without sacrificing the overall efficiency, so the size can be decreased. Moreover, the voltage-gain range of the RTBSCs is increased significantly. As a result, the input-voltage range can be increased if the output voltage is regulated. The operation principle, voltage-gain curves, output characteristics and the voltage/current stress of the resonant tank for this family are analyzed. A 3X RTBSC prototype rated at 20∼130W with a peak efficiency 98% was built to verify the analysis.
KW - Resonant switched-capacitor converter
KW - ZVS operation
UR - http://www.scopus.com/inward/record.url?scp=85020136539&partnerID=8YFLogxK
U2 - 10.1109/APEC.2017.7930930
DO - 10.1109/APEC.2017.7930930
M3 - Conference contribution
AN - SCOPUS:85020136539
T3 - Conference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC
SP - 1713
EP - 1719
BT - 2017 IEEE Applied Power Electronics Conference and Exposition, APEC 2017
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 32nd Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2017
Y2 - 26 March 2017 through 30 March 2017
ER -