TY - GEN
T1 - Soft-charging operation of switched-capacitor DC-DC converters with an inductive load
AU - Lei, Yutian
AU - Pilawa Podgurski, Robert Carl Nikolai
PY - 2014
Y1 - 2014
N2 - Switched-capacitor (SC) converters are becoming a strong candidate for high power density converters. Traditionally, these SC converters have suffered from two main problems: capacitor charge transfer loss and lossy output voltage regulation. This paper proposes a hybrid SC converter topology that addresses both problems simultaneously. The proposed topology adds a single small inductor to the SC converter and compares favorably in terms of efficiency and power density to both SC converters and buck converters. Unlike SC converters, it can maintain its efficiency for output voltages that are lower than the nominal value determined by the topology. A discrete prototype with a large step-down ratio of over 8-to-1 and a power rating of 30 W has been designed and built to demonstrate the potential of the hybrid converter.
AB - Switched-capacitor (SC) converters are becoming a strong candidate for high power density converters. Traditionally, these SC converters have suffered from two main problems: capacitor charge transfer loss and lossy output voltage regulation. This paper proposes a hybrid SC converter topology that addresses both problems simultaneously. The proposed topology adds a single small inductor to the SC converter and compares favorably in terms of efficiency and power density to both SC converters and buck converters. Unlike SC converters, it can maintain its efficiency for output voltages that are lower than the nominal value determined by the topology. A discrete prototype with a large step-down ratio of over 8-to-1 and a power rating of 30 W has been designed and built to demonstrate the potential of the hybrid converter.
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U2 - 10.1109/APEC.2014.6803598
DO - 10.1109/APEC.2014.6803598
M3 - Conference contribution
AN - SCOPUS:84900456753
SN - 9781479923250
T3 - Conference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC
SP - 2112
EP - 2119
BT - APEC 2014 - 29th Annual IEEE Applied Power Electronics Conference and Exposition
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 29th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2014
Y2 - 16 March 2014 through 20 March 2014
ER -