A single-inductor bipolar-output converter with 5 mV positive voltage ripple for active matrix OLED

  • Wei Chung Chen
  • , Chao Chang Chiu
  • , Chun Yu Hsieh
  • , Tzu Chi Huang
  • , Yu Huei Lee
  • , Yao Yi Yang
  • , Chun Jen Shih
  • , Ming Yan Fan
  • , Ke Horng Chen

Research output: Chapter in Book/Report/Conference proceedingConference contribution

5 Citations (Scopus)

Abstract

This paper proposed a single inductor bipolar outputs (SIBO) switching converter for the active matrix Organic Light-Emitting Diode (AMOLED). The negative voltage is generated by the inverting buck-boost converter, which is regulated by the high signal-to-noise ratio comparator. Moreover, the boost converter is utilized to provide the positive output voltage. The proposed switching converter uses the switch sequential to reduce the positive voltage ripple to about 5 mV with the proportional-integral (PI) compensator to guarantee good line and load-regulation. Simulation results show the positive output voltage is regulated to 5V and the negative output voltage is -7V for driving the AMOLED. When the load current is 25 mA and the ESR is 30mΩ, the output voltage ripples are equal to 5 mV and 11 mV for positive and negative voltages, respectively. Besides, the load and line regulations of positive output voltage are 0.24 mV/mA and 5 mV/V, respectively. The maximum efficiency is 88.5% when the input voltage is 4.5 V and the load current is 50mA.

Original languageEnglish
Title of host publicationIEEE Energy Conversion Congress and Exposition
Subtitle of host publicationEnergy Conversion Innovation for a Clean Energy Future, ECCE 2011, Proceedings
Pages3229-3233
Number of pages5
DOIs
Publication statusPublished - 2011
Event3rd Annual IEEE Energy Conversion Congress and Exposition, ECCE 2011 - Phoenix, AZ, United States
Duration: 2011 Sept 172011 Sept 22

Publication series

NameIEEE Energy Conversion Congress and Exposition: Energy Conversion Innovation for a Clean Energy Future, ECCE 2011, Proceedings

Other

Other3rd Annual IEEE Energy Conversion Congress and Exposition, ECCE 2011
Country/TerritoryUnited States
CityPhoenix, AZ
Period11-09-1711-09-22

All Science Journal Classification (ASJC) codes

  • Energy Engineering and Power Technology
  • Renewable Energy, Sustainability and the Environment

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