Title :
A PWM DC-DC boost converter with peak current-mode control for TFT LCD power supply
Author :
Lu, Feng ; Liu, Xin ; Wang, Shuai ; Chang, Yuchun
Author_Institution :
State Key Lab. on Integrated Optoelectron., Jilin Univ., Changchun, China
Abstract :
This paper presents an asynchronous 1 MHz DC-DC boost converter for TFT LCD power supply, using a pulse-width-modulated peak current mode controller. Both complete small signal analysis and overall efficiency investigation of the boost converter are performed, as well as the discussion of compensation method. An error amplifier with a compensation network and a sum-comparator with three input channels are proposed. A maximum power conversion efficiency of higher than 90% is achieved.
Keywords :
DC-DC power convertors; PWM power convertors; compensation; liquid crystal displays; power supply circuits; thin film transistors; PWM DC-DC boost converter; TFT LCD power supply; compensation method; error amplifier; frequency 1 MHz; peak current-mode control; power conversion efficiency; pulse width modulation; signal analysis; sum comparator; Circuits; DC-DC power converters; Electromagnetic interference; Power supplies; Pulse width modulation; Pulse width modulation converters; Pulsed power supplies; Thin film transistors; Transfer functions; Voltage;
Conference_Titel :
Solid-State and Integrated-Circuit Technology, 2008. ICSICT 2008. 9th International Conference on
Conference_Location :
Beijing
Print_ISBN :
978-1-4244-2185-5
Electronic_ISBN :
978-1-4244-2186-2
DOI :
10.1109/ICSICT.2008.4734941
