20μA to 100mA DC-DC converter with 2.8 to 4.2V battery supply for portable applications in 45nm CMOS

Author

Bandyopadhyay, Saurav ; Ramadass, Yogesh K. ; Chandrakasan, Anantha P.

Author_Institution

Massachusetts Inst. of Technol., Cambridge, MA, USA

fYear

2011

fDate

20-24 Feb. 2011

Firstpage

386

Lastpage

388

Abstract

Digital baseband processors in portable devices today are able to operate off voltages of 1V and less. Efficient DC-DC converters are required to power these ICs from Li-ion batteries with a voltage range of 2.8 to 4.2V. This is done by a discrete power management IC (PMIC) capable of handling the high battery voltage. However, there is significant push in integrating the PMIC module with the baseband processor implemented in scaled technologies thereby reducing the number of system-level components. This paper presents the circuit techniques used in a 45nm CMOS DC-DC converter with high battery-voltage handling capability.

Keywords

CMOS integrated circuits; DC-DC power convertors; PWM power convertors; secondary cells; CMOS DC-DC converter; Digital baseband processor; Li; Li-ion battery; battery-voltage handling capability; current 20 muA to 100 mA; discrete power management IC; portable device; size 45 nm; voltage 1 V; voltage 2.8 V to 4.2 V; Batteries; Capacitors; Converters; Instruments; Logic gates; MOS devices; Pulse width modulation;

fLanguage

English

Publisher

ieee

Conference_Titel

Solid-State Circuits Conference Digest of Technical Papers (ISSCC), 2011 IEEE International

Conference_Location

San Francisco, CA

ISSN

0193-6530

Print_ISBN

978-1-61284-303-2

Type

conf

DOI

10.1109/ISSCC.2011.5746365

Filename

5746365