Design of high-performance transconductance error amplifier for DC-DC converter

Author

Zhou Yefeng ; Yu Guoyi ; Zheng Meijun ; Zhang Le

Author_Institution

Dept. of Electron. Sci. & Technol., Huazhong Univ. of Sci. & Technol., Wuhan, China

fYear

2011

fDate

19-22 Aug. 2011

Firstpage

1352

Lastpage

1354

Abstract

A high-performance transconductance error amplifier is presented for DC-DC converters. The amplifier designed in this paper is composed of OVA (Operational Voltage Amplifier) and OFA (Operational Floating Amplifier). The OVA is designed as cascode structure and provides a high voltage gain, while the OFA is designed to enhance the transconductance and improve driving capability of the error amplifier. The performance of the error amplifier presented is improved effectively. Using SMIC 0.35 μm CMOS process technology to stimulate the designed circuits, the results show that the transconductance error amplifier achieved an open loop voltage gain of 57 dB and a transconductance of 191 μS.

Keywords

CMOS integrated circuits; DC amplifiers; DC-DC power convertors; electric admittance; network synthesis; operational amplifiers; CMOS process technology; DC-DC converter; OFA design; OVA design; SMIC; cascode structure; circuit design; gain 57 dB; high performance transconductance error amplifier design; operational floating amplifier; operational voltage amplifier; size 0.35 mum; transconductance enhancement; Educational institutions; Gain; Simulation; Transconductance; Transient analysis; Transient response; DC-DC converter; error amplifier; negative feedback; operational floating amplifier; operational voltage amplifier;

fLanguage

English

Publisher

ieee

Conference_Titel

Mechatronic Science, Electric Engineering and Computer (MEC), 2011 International Conference on

Conference_Location

Jilin

Print_ISBN

978-1-61284-719-1

Type

conf

DOI

10.1109/MEC.2011.6025720

Filename

6025720