TY - GEN
T1 - Merged two-stage power converter architecture with soft charging switched-capacitor energy transfer
AU - Pilawa-Podgurski, Robert C.N.
AU - Giuliano, David M.
AU - Perreault, David J.
PY - 2008
Y1 - 2008
N2 - This paper presents a two-stage architecture that combines a large step-down switched-capacitor transformation stage with a high-bandwidth magnetic regulation stage. The proposed design is particularly well-suited for an integrated CMOS process, as it makes use of the available on-die device characteristics. In such a process, the two-stage architecture presented offers high efficiency, high power density, and high-bandwidth regulation. We show that by merging the switched-capacitor stage and the regulation stage in a specific manner, further performance improvements can be attained. When the fast-switching regulation stage is used to provide soft charging of the switched-capacitor stage, a substantial improvement in performance is possible. An experimental prototype, implemented using discrete components, validates the approach.
AB - This paper presents a two-stage architecture that combines a large step-down switched-capacitor transformation stage with a high-bandwidth magnetic regulation stage. The proposed design is particularly well-suited for an integrated CMOS process, as it makes use of the available on-die device characteristics. In such a process, the two-stage architecture presented offers high efficiency, high power density, and high-bandwidth regulation. We show that by merging the switched-capacitor stage and the regulation stage in a specific manner, further performance improvements can be attained. When the fast-switching regulation stage is used to provide soft charging of the switched-capacitor stage, a substantial improvement in performance is possible. An experimental prototype, implemented using discrete components, validates the approach.
KW - Charge pumps
KW - Dc-dc converters
KW - Soft charging
KW - Switched capacitor circuits
KW - Two-stage architectures
KW - Voltage regulator module
UR - http://www.scopus.com/inward/record.url?scp=52349094852&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=52349094852&partnerID=8YFLogxK
U2 - 10.1109/PESC.2008.4592581
DO - 10.1109/PESC.2008.4592581
M3 - Conference contribution
AN - SCOPUS:52349094852
SN - 9781424416684
T3 - PESC Record - IEEE Annual Power Electronics Specialists Conference
SP - 4008
EP - 4015
BT - PESC '08 - 39th IEEE Annual Power Electronics Specialists Conference - Proceedings
T2 - PESC '08 - 39th IEEE Annual Power Electronics Specialists Conference
Y2 - 15 June 2008 through 19 June 2008
ER -