A New Approach to Reducing Output Ripple in Switched-Capacitor-Based Step-Down DC-DC Converters

Rapidly dropping power supply voltages and tight voltage regulation requirements for integrated circuits challenges power supply designers. A novel interleaved discharging (ID) approach is presented to reduce the output ripple in step-down switched-capacitor (SC) dc-dc converters. Simulation and exp...

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Veröffentlicht in:	IEEE transactions on power electronics 2006-11, Vol.21 (6), p.1548-1555
Hauptverfasser:	Jifeng Han, von Jouanne, A., Temes, G.C.
Format:	Artikel
Sprache:	eng
Schlagworte:	Application software Applied sciences Capacitors Capacitors. Resistors. Filters Catalytic converters Circuit properties Circuit simulation Control Converters Convertors Costs Design engineering Electric potential Electric, optical and optoelectronic circuits Electrical engineering. Electrical power engineering Electrical machines Electronic circuits Electronics Exact sciences and technology Flexibility Integrated circuits (ICs) Interleaved codes interleaved discharging (ID) Magnetic separation Power electronics, power supplies Power supplies Power supply Ripples Signal convertors Simulation Surge protectors switched-capacitor (SC) Switching circuits Switching converters Various equipment and components Voltage
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Beschreibung
Zusammenfassung:	Rapidly dropping power supply voltages and tight voltage regulation requirements for integrated circuits challenges power supply designers. A novel interleaved discharging (ID) approach is presented to reduce the output ripple in step-down switched-capacitor (SC) dc-dc converters. Simulation and experimental results of a four-stage SC dc-dc converter show that the ID approach can reduce the output ripple by a factor of three. The proposed approach also improves the converter efficiency by 7%. The ID method provides flexibility in the design optimization of step-down SC dc-dc converters
ISSN:	0885-8993 1941-0107
DOI:	10.1109/TPEL.2006.882973