Switched-capacitor (SC) DC-DC converter with fine tune control outputs

Author

Terada, Shinya ; Oota, Ichirou ; Eguchi, Kei ; Ueno, Fumio

Author_Institution

Div. of Energy Electron., Sojo Univ., Kumamoto

fYear

2006

fDate

26-28 April 2006

Firstpage

233

Lastpage

236

Abstract

A switched-capacitor (SC) converter is in the spotlight as a coilless converter that consists of capacitors and switches. The SC converters have a weak point that the voltage ratio cannot change linearly, because the output voltage is determined by the voltage dividing ratios of the capacitors. In this paper, we propose SC DC-DC converter with fine tune control outputs. This circuit consists of 2 converter blocks. The output voltage with fine tune control can be obtained by the sum of the output of each converter. Thus, the proposed circuit can provide more numbers of output voltages than conventional converters. As an example, the circuit which has 25 types of outputs in the range 0.75 ~ 2.3V from 3.6V input is designed. The SPICE simulations show that the power efficiency is 85 ~ 70% when the output current is about 160 to 360mA

Keywords

DC-DC power convertors; SPICE; switched capacitor networks; DC DC converter; SPICE; coilless converter; fine tune control outputs; switched capacitor; Clocks; Communication switching; DC-DC power converters; Educational institutions; Power engineering and energy; Switched capacitor circuits; Switches; Switching circuits; Switching converters; Voltage control;

fLanguage

English

Publisher

ieee

Conference_Titel

Devices, Circuits and Systems, Proceedings of the 6th International Caribbean Conference on

Conference_Location

Playa del Carmen

Print_ISBN

1-4244-0041-4

Electronic_ISBN

1-4244-0042-2

Type

conf

DOI

10.1109/ICCDCS.2006.250866

Filename

4016895