Title :
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
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;
Conference_Titel :
Mechatronic Science, Electric Engineering and Computer (MEC), 2011 International Conference on
Conference_Location :
Jilin
Print_ISBN :
978-1-61284-719-1
DOI :
10.1109/MEC.2011.6025720
