Detailed Information
Cited 0 time in 
Cited 3 time in 
Cited 3 time in
Metadata Downloads
A-IGZO TFT based operational amplifier and comparator circuits for the adaptive DC-DC converter
- Authors
- Kim, K.; Choi, K.-Y.; Choi, D.-H.; Lee, H.
- Issue Date
- 2014
- Publisher
- Blackwell Publishing Ltd
- Keywords
- a-InGaZnO; dc-dc converter; operational amplifier (op-amp); oxide transistor; pulse-width-modulation (PWM), comparator; thin-film transistor (TFT)
- Citation
- Digest of Technical Papers - SID International Symposium, v.45, no.1, pp.1164 - 1167
- Volume
- 45
- Number
- 1
- Start Page
- 1164
- End Page
- 1167
- ISSN
- 0097-966X
- Abstract
- In this paper, we present an operational amplifier (op-amp) based on amorphous Indium-Gallium-Zinc-Oxide thin-film transistors (a-InGaZnO TFTs) to achieve a comparator operated by pulse-width-modulation (PWM) control-loop structure, which can be used for dc-dc converter circuits integrated in the display driving system. Based on electrical characteristics of the fabricated a-InGaZnO TFT, we proposed a novel NMOS op-amp to achieve the overall gain of 19.2dB. On the basis of the proposed op-amp, we fabricated a-InGaZnO TFT comparator circuit, which could successfully operate at 100 Hz to control the duty ratio from 25% to 75% with the slew rate of 0.625V/μs. © 2014 Society for Information Display.
- Files in This Item
- There are no files associated with this item.
- Appears in
Collections - College of Information Technology > ETC > 1. Journal Articles
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.
Related Researcher
- Lee, Ho jin
- College of Information Technology (Department of Electronic Engineering)