Abstract
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
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