A compact adaptive slope compensation circuit for Current-Mode DC-DC converter

Author

Shibata, Kimio ; Pham, Cong-Kha

Author_Institution

Univ. of Electro-Commun., Chofu, Japan

fYear

2010

fDate

May 30 2010-June 2 2010

Firstpage

1651

Lastpage

1654

Abstract

In this paper, the adaptive slope compensation circuit operating in low power consumption with a less component counts design is proposed. The sub-harmonic oscillation is a well-known problem in the Current-Mode DC-DC converters. Proposed novel adaptive slope compensation circuit solved the sub-harmonic oscillation problem. The circuit adjusts the slope compensation ramp by automatic operation according to the output voltage. The proposed circuit has implemented to the Current-Mode DC-DC converter which operates at 1.2MHz of the switching frequency. The proposed circuit used standard 0.5μm CMOS parameters for HSPICE simulation. The proposed circuit which composed of 15 components and consumes only 10μA has eliminated the sub-harmonic oscillation problem.

Keywords

CMOS integrated circuits; DC-DC power convertors; current-mode circuits; harmonics suppression; switching convertors; CMOS; HSPICE simulation; compact adaptive slope compensation circuit; current 10 muA; current mode DC-DC converter; size 0.5 mum; subharmonic oscillation; switching frequency; Circuits; DC-DC power converters; Energy consumption; Equations; Feedback loop; Inductors; Stability; Switching converters; Transient response; Voltage; Adaptive; Current-mode; DC-DC converter; Slope Compensation;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems (ISCAS), Proceedings of 2010 IEEE International Symposium on

Conference_Location

Paris

Print_ISBN

978-1-4244-5308-5

Electronic_ISBN

978-1-4244-5309-2

Type

conf

DOI

10.1109/ISCAS.2010.5537478

Filename

5537478