RT Journal Article
T1 Dynamic Model of Switched-Capacitor DC–DC Converters in the Slow-Switching Limit Including Charge Reusing
A1 Ferro Santiago, Esteban
A1 Brea Sánchez, Víctor Manuel
A1 López Martínez, Paula
A1 Cabello Ferrer, Diego
K1 DC–DC power conversion
K1 Energy harvesting
K1 Switched-capacitor circuits
K1 Transient response
K1 Time-domain analysis
AB A reliable model to analyze the dynamic behavior of two-phase switched-capacitor dc-dc converters in the slow-switching limit regime is proposed, taking into account both top and bottom parasitic capacitances as well as the charge reusing approach. This technique features significant improvements in both gain and efficiency with respect to existing solutions. We calculate the slow-switching limit boundary layer taking into account the parasitic capacitances of the flying capacitors and the dynamic and parasitic effects from the switches. The model is highly reliable into this region, featuring better accuracy in both time response and charge consumed than previous models in the literature. Also, as we will show that it can be used outside this region assuming a certain accuracy loss. The model is verified by experimental results and circuit-level simulations. The model has been implemented in an open-access web simulator, saving up to 10 000× in computation time when compared to well-known circuit-level simulators. The applicability of the model is illustrated through the optimization of charge efficiency and time response in a typical situation for light microenergy harvesting using Dickson, Fibonacci, and exponential solutions
PB IEEE
SN 0885-8993
YR 2017
FD 2017
LK http://hdl.handle.net/10347/18343
UL http://hdl.handle.net/10347/18343
LA eng
NO Esteban Ferro, Víctor Manuel Brea, Paula López and Diego Cabello (2018) Dynamic Model of Switched- Capacitor DC-DC Converters in the Slow-Switching Limit including Charge Reusing. IEEE TRANSACTIONS ON POWER ELECTRONICS, 32(7), 5293-5311. Doi: 10.1109/TPEL.2018.2877105
NO This work has been partially funded by Spanish government projects TEC2012-38921-C02-02 MINECO (ERDF/FEDER), TEC2015-66878-C3-3-R MINECO, Xunta de Galicia with EM2013/038 (FEDER), AE CITIUS (CN2012/151, ERDF (FEDER)) and GPC2013/040 ERDF (FEDER).
DS Minerva
RD 22 abr 2026