A Highly Integrated Power Management IC for Advanced Mobile Applications

Author

Chunlei Shi ; Walker, B.C. ; Zeisel, E. ; Hu, B. ; McAllister, G.H.

Author_Institution

Qualcomm Inc., San Diego

Volume

42

Issue

8

fYear

2007

Firstpage

1723

Lastpage

1731

Abstract

Wireless communication now has the speed and power to converge seamlessly with other consumer and business electronics. However, battery technology has not kept pace with advancement in circuit technology. As a result, design of power management is becoming a more complex problem for this new generation of wireless devices with converged voice, data, and multimedia. In this paper, a highly integrated power management IC (PMIC) is presented which enables mobile devices that are more cost effective, thinner and more compact with better power efficiency. The overall architecture and system level design considerations are described. The design details of two key building blocks - low-dropout linear regulator (LDO) and switch-mode DC-DC converter - are also discussed, including a novel frequency compensation method for LDO.

Keywords

DC-DC power convertors; mobile radio; power integrated circuits; switching convertors; integrated power management IC; low-dropout linear regulator; mobile device; novel frequency compensation method; switch-mode DC-DC converter; wireless communication; Application specific integrated circuits; Batteries; Business communication; Costs; Energy management; Integrated circuit technology; Power generation; Power system management; System-level design; Wireless communication; Buck regulator; DC-DC converter; LDO; linear charger; power management;

fLanguage

English

Journal_Title

Solid-State Circuits, IEEE Journal of

Publisher

ieee

ISSN

0018-9200

Type

jour

DOI

10.1109/JSSC.2007.900284

Filename

4277880