A new design of power supplies for pocket computer systems

Author

Liu, Jian ; Chen, Zhiming ; Du, Zhong

Author_Institution

Northwest Univ., Xian, China

Volume

45

Issue

2

fYear

1998

fDate

4/1/1998 12:00:00 AM

Firstpage

228

Lastpage

235

Abstract

A new design of power supply based on the idea of switched capacitors, as applied to pocket computer systems, is presented. This new type of power supply is inductorless and, consequently, suitable for hybridization and even monolithic integration. The new design is also based on distinguishing characteristics of pocket digital computer systems, in which a switched-capacitor converter can work well, since minimal regulation is required. The new device may enable the pocket computer system to be powered by only one battery, resulting in a simple topology. Two switched-capacitor converters, +12 V/-12 V, +5 V and +5 V/+12 V, -12 V, are shown, respectively, as an example for demonstrating the basic principle and its performance. PSPICE simulation and laboratory models show good results for this new type of power supply

Keywords

DC-DC power convertors; SPICE; computer power supplies; notebook computers; switched capacitor networks; -12 V; 12 V; 5 V; DC-DC converters; PSPICE simulation; inductorless power supply; minimal regulation; monolithic integration; pocket computer systems; pocket digital computer systems; power supplies; switched capacitors; switched-capacitor converter; Batteries; Capacitors; Computational modeling; Laboratories; Monolithic integrated circuits; Power supplies; Power system modeling; SPICE; Switching converters; Topology;

fLanguage

English

Journal_Title

Industrial Electronics, IEEE Transactions on

Publisher

ieee

ISSN

0278-0046

Type

jour

DOI

10.1109/41.681221

Filename

681221