Title :
A switched-capacitor DC-DC converter with various stepped-down outputs
Author :
Eguchi, Kei ; Ueno, Fumio ; Zhu, Hongbing ; Tabata, Toru
Author_Institution :
Dept. of Inf. & Comput. Sci., Kumamoto Nat. Coll. of Technol., Japan
Abstract :
This paper introduces a family of ring-type switched-capacitor (SC) converters, which produces 0.75∼2.3 V outputs by being stepped-down from a 3.6 V input. The circuit consists of 2 series-connected DC-DC conversion blocks. Since the input voltage is converted twice by these blocks, the proposed circuit can provide more various types of output-voltages than conventional ring-type converters. Furthermore, the power efficiency and the hardware-cost are improved since the number of driver circuits can be reduced. As an example, the circuit is designed with 17 types of output voltages in the range of 0.75∼2.3 V. The SPICE simulations show that the power efficiency is more than 80% in the output current range from about 110 to 360 mA.
Keywords :
DC-DC power convertors; SPICE; driver circuits; power engineering computing; switched capacitor networks; switching convertors; 0.75 to 2.3 V; 3.6 V; SPICE simulation; driver circuit; power efficiency; ring-type switched-capacitor converter; series-connected DC-DC conversion block; stepped-down output converter; DC-DC power converters; Switching converters;
Conference_Titel :
TENCON 2004. 2004 IEEE Region 10 Conference
Print_ISBN :
0-7803-8560-8
DOI :
10.1109/TENCON.2004.1414862
