標題: A New Single Inductor Bipolar Multiple Output (SIBMO) On-Chip Boost Converter Using Ripple-based Constant On-time Control for LCD Drivers
作者: Chang, Chun-Kai
Su, Chung-Hsin
Chao, Paul C. -P.
電機工程學系
Department of Electrical and Computer Engineering
關鍵字: single-inductor bipolar multiple-output (SIBMO);on-chip boost converter;ripple-based control;constant on-time (COT)
公開日期: 2014
摘要: A constant on-time (COT) single-inductor bipolar multiple-output (SIBMO) on-chip boost converter is proposed for LCD drivers in this study. The converter is designed for biasing some analog and digital circuits fabricated on glass substrates for benefits of extending the life of LCD. These circuits on glass require bipolar high voltages for drive LCDs. The converter boosts the input of 2.8V to two positive outputs and two negative outputs, + 12V, + 6V, -12V and -6V, respectively. Different from the commonly-used pulse width modulation (PWM), the constant on-time (COT) is adopted herein by a dynamic charging algorithm whose frequency is adapted to the varied output voltage level, thus enjoying the merit of less circuit complexity and a smaller chip area. The COT is in this study further developed to a ripple-based one for achieving applicability even with unbalanced output loads with high efficiency. While total maximum output power is 260mw and the switching frequency varies from 500 kHz to 650 kHz, the maximum efficiency reaches 82.4%. The converter is fabricated by TSMC 0.25 mu m 1P3M high voltage CMOS technology for verification.
URI: http://hdl.handle.net/11536/135301
ISBN: 978-1-4799-4032-5
ISSN: 1553-572X
期刊: 40TH ANNUAL CONFERENCE OF THE IEEE INDUSTRIAL ELECTRONICS SOCIETY (IECON 2014)
起始頁: 4122
結束頁: 4125
顯示於類別:會議論文