TY - GEN
T1 - A Step-down Series-Parallel Dual Resonant Switched-Capacitor Converter with Extended Voltage Gain Range
AU - Hao, Chunxiao
AU - He, Chao
AU - Li, Shouxiang
N1 - Publisher Copyright:
© 2021 IEEE.
PY - 2021
Y1 - 2021
N2 - In this paper, a step-down Series-Parallel (SP) Dual Resonant Switched-capacitor Converter (DRSC) is proposed, which is expected to be used for the first stage of a data center. The dual resonant core (DRC) is added to the traditional SP Switched-capacitor Converter (SCC) and the on-time fixed frequency modulation is adopted. Consequently, the resonant inductor current of one resonant tank is overlapped with the other one for a controlled time interval. By varying the overlapped period, the full-range voltage regulation can be achieved efficiently even at light load condition. Moreover, zero-current-switching (ZCS) turn-on for transistors and ZCS turn-off for diodes can be obtained. A comprehensive analysis of the operation principle, voltage-gain curve and component stress is presented. A 3X stepdown SP DRSC prototype with output power of 100W and nominal voltage level of 4SV-I2V was designed and built to verify the operation principle.
AB - In this paper, a step-down Series-Parallel (SP) Dual Resonant Switched-capacitor Converter (DRSC) is proposed, which is expected to be used for the first stage of a data center. The dual resonant core (DRC) is added to the traditional SP Switched-capacitor Converter (SCC) and the on-time fixed frequency modulation is adopted. Consequently, the resonant inductor current of one resonant tank is overlapped with the other one for a controlled time interval. By varying the overlapped period, the full-range voltage regulation can be achieved efficiently even at light load condition. Moreover, zero-current-switching (ZCS) turn-on for transistors and ZCS turn-off for diodes can be obtained. A comprehensive analysis of the operation principle, voltage-gain curve and component stress is presented. A 3X stepdown SP DRSC prototype with output power of 100W and nominal voltage level of 4SV-I2V was designed and built to verify the operation principle.
KW - continuous conversion ratio
KW - dual resonant
KW - light load operation
KW - resonant switched-capacitor converter
UR - http://www.scopus.com/inward/record.url?scp=85123342081&partnerID=8YFLogxK
U2 - 10.1109/ICPSAsia52756.2021.9621696
DO - 10.1109/ICPSAsia52756.2021.9621696
M3 - Conference contribution
AN - SCOPUS:85123342081
T3 - 2021 IEEE IAS Industrial and Commercial Power System Asia, I and CPS Asia 2021
SP - 28
EP - 32
BT - 2021 IEEE IAS Industrial and Commercial Power System Asia, I and CPS Asia 2021
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2021 IEEE IAS Industrial and Commercial Power System Asia, I and CPS Asia 2021
Y2 - 18 July 2021 through 21 July 2021
ER -