Paper Info
Title
A Power-Efficient Hybrid Single-Inductor Bipolar-Output DC-DC Converter with Floating Negative Output for AMOLED Displays
Abstract
This paper presents a hybrid single-inductor bipolar-output (SIBO) DC-DC converter for active-matrix organic light-emitting diode (AMOLED) displays which are relatively more sensitive to the supply noises on their positive supply. This design significantly improves the display quality by achieving a near-zero voltage ripple at the positive output thanks to the negative output floating and the use of low-power shunt regulators. In addition, with the hybrid topology and the proposed cross-coupled bootstrap-based level-shifter with a dual-PMOS inverter buffer, low-voltage devices without deep-N-well are used, reducing the chip area and cost. The proposed converter is implemented in a 0.35-μm CMOS process with 5-V devices. The targeted output voltages are 5.3V and -4.7V. Operating at 1MHz, the measured positive output ripple is lower than 1mV in all the conditions. The measured peak power efficiency is 89.3% at 1.1W output power. The maximum output power is 3.5W.
Year
DOI
Venue
2020
10.1109/CICC48029.2020.9075940
2020 IEEE Custom Integrated Circuits Conference (CICC)
Keywords
DocType
ISSN
Hybrid converter,bipolar output,shunt regulator,AMOLED display,floating negative output,dual-PMOS inverter
Conference
0886-5930
ISBN
Citations 
PageRank 
978-1-7281-6032-0
0
0.34
References 
Authors
5
7
Name
Order
Citations
PageRank
Fangyu Mao162.63
Yan Lu217925.32
Edoardo Bonizzoni316247.30
Filippo Boera400.34
Mo Huang5569.97
Franco Maloberti6686144.70
Rui P. Martins7126.86