Title :
Inverting buck-boost DC-DC converter for mobile AMOLED display with real-time self-tuned minimum power-loss tracking scheme
Author :
Sung-Wan Hong ; Gyu-Hyeong Cho
Abstract :
Introducing a new minimum power loss tracking scheme which implements theoretical equations at the circuit level, a proposed inverting buck-boost DC-DC converter for mobile AMOLED display has maximum power efficiency of 91 % at switching frequency of 1 MHz in typical I/O voltages. Besides, this work maintains maximum power efficiency of around 90 % though I/O voltages are varied in those whole ranges. This chip is implemented in 0.35μm BCD process and occupies 2.1 × 1.4 mm2.
Keywords :
DC-DC power convertors; LED displays; mobile handsets; telecommunication power management; Inverting buck boost DC DC converter; efficiency 91 percent; frequency 1 MHz; maximum power efficiency; mobile AMOLED display; real time self tuned minimum power loss tracking scheme; size 0.35 mum; Active matrix organic light emitting diodes; Equations; Logic gates; Manganese; Mobile communication; Switching loss; Transistors; High power efficiency; Inverting buck-boost converter; Minimum power loss; Mobile AMOLED display;
Conference_Titel :
Custom Integrated Circuits Conference (CICC), 2014 IEEE Proceedings of the
Conference_Location :
San Jose, CA
DOI :
10.1109/CICC.2014.6946054
