An on-chip high-efficiency and low-noise DC/DC converter using divided switches with current control technique

Author

Sakiyama, S. ; Kajiwara, J. ; Kinoshita, Moto ; Satomi, K. ; Ohtani, Kiyonobu ; Matsuzawa, Akira

Author_Institution

Matsushita Electr. Ind. Co. Ltd., Osaka, Japan

fYear

1999

fDate

17-17 Feb. 1999

Firstpage

156

Lastpage

157

Abstract

An on-chip DC/DC converter with high efficiency and low-noise and easy implementation in LSIs is needed for single-supply voltage and low-power operation of LSIs. To obtain high-efficiency, fixed pulse-width modulation (PWM) and zero volt switching (ZVS) adaptive control are used. Operation with efficiency >90% is reported. However, these reports do not discuss low- noise switching operation and easy implementation. These are the most important points for practical use. The specifications for the DC/DC converter are: (1) easy implementation into LSIs as an on-chip DC/DC converter; (2) efficiency over 90% (at Io=80 mA, 3.0 V->2.0 V); (3) output noise below 30 mVp-p. A DC/DC converter which has both efficiency over 92% and 15 mV output noise is incorporated into an LSI.

Keywords

DC-DC power convertors; PWM power convertors; integrated circuit noise; large scale integration; low-power electronics; 2.0 to 3.0 V; 80 mA; 90 percent; LSI; adaptive control; current control technique; divided switches; efficiency; fixed pulse-width modulation; low-noise DC/DC converter; low-power operation; output noise; single-supply voltage; zero volt switching; Current control; DC-DC power converters; Degradation; Large scale integration; Noise reduction; Pulse width modulation; Space vector pulse width modulation; Switches; Variable structure systems; Wiring;

fLanguage

English

Publisher

ieee

Conference_Titel

Solid-State Circuits Conference, 1999. Digest of Technical Papers. ISSCC. 1999 IEEE International

Conference_Location

San Francisco, CA

ISSN

0193-6530

Print_ISBN

0-7803-5126-6

Type

conf

DOI

10.1109/ISSCC.1999.759172

Filename

759172