TY - GEN
T1 - High-capacity DC-DC converters for active matrix OLED display
AU - Lee, Seok
AU - Yoon, Jayang
AU - Kim, Jaehoon
AU - Lee, Changsuk
AU - Jung, Hawoong
AU - Lee, Jaeshin
AU - Choi, Joongho
PY - 2010
Y1 - 2010
N2 - Two DC-DC converters for bipolar outputs is implemented which are suitable for large-size AM-OLED (Active-Matrix Organic Light Emitting Diode) display. The positive output voltage is regulated by a buck DC-DC converter, and the negative one is regulated by a inverting buck-boost DC-DC converter. Both DC-DC converters operate in a current mode in order to enhance the transient responses. The improved discrete-mode detection circuit is proposed to achieve high-efficiency and accurate output voltages when converters operate in discontinuous-conduction mode. Compensation blocks such as artificial ramp and PI-compensator are incorporated for maintaining stability. The DC-DC converters are fabricated in a 0.35-um BCD technology. For typical operating conditions, maximum efficiencies of buck and inverting buck-boost converters are 92% and 83.1%, respectively.
AB - Two DC-DC converters for bipolar outputs is implemented which are suitable for large-size AM-OLED (Active-Matrix Organic Light Emitting Diode) display. The positive output voltage is regulated by a buck DC-DC converter, and the negative one is regulated by a inverting buck-boost DC-DC converter. Both DC-DC converters operate in a current mode in order to enhance the transient responses. The improved discrete-mode detection circuit is proposed to achieve high-efficiency and accurate output voltages when converters operate in discontinuous-conduction mode. Compensation blocks such as artificial ramp and PI-compensator are incorporated for maintaining stability. The DC-DC converters are fabricated in a 0.35-um BCD technology. For typical operating conditions, maximum efficiencies of buck and inverting buck-boost converters are 92% and 83.1%, respectively.
KW - AM-OLED
KW - DC-DC Buck Converter
KW - DC-DC Buck-Boost Converter
KW - Discrete-Mode Detection
UR - http://www.scopus.com/inward/record.url?scp=79959223975&partnerID=8YFLogxK
U2 - 10.1109/APCCAS.2010.5775053
DO - 10.1109/APCCAS.2010.5775053
M3 - Conference contribution
AN - SCOPUS:79959223975
SN - 9781424474561
T3 - IEEE Asia-Pacific Conference on Circuits and Systems, Proceedings, APCCAS
SP - 480
EP - 483
BT - Proceedings of the 2010 Asia Pacific Conference on Circuit and System, APCCAS 2010
T2 - 2010 Asia Pacific Conference on Circuit and System, APCCAS 2010
Y2 - 6 December 2010 through 9 December 2010
ER -