Title :
Single-inductor dual-output DC/DC buck converter with high full-load efficiency
Author :
Qian, Junjie ; Shao, Zhibiao
Abstract :
This paper presents a novel topology of DC/DC buck converter which is high power efficiency, low cost and small size. This converter adopts PWM and PFM dual modes control to achieve high efficiency over full load and it works at PWM mode at heavy load, PFM mode at light load. Also time-multiplexing control is accepted to realize two independent outputs with only one 1.1 uH off-chip inductor. The converter is fabricated with CSMC 0.5 um CMOS process, and achieves the peak efficiency with a maximum total output power of 900 mW.
Keywords :
CMOS analogue integrated circuits; DC-DC power convertors; PWM power convertors; inductors; multiplexing; pulse frequency modulation; CSMC CMOS process; PFM mode; PWM mode; dual-output DC-DC buck converter; high full-load efficiency; off-chip inductor; power 900 mW; power efficiency; single-inductor DC-DC buck converter; size 0.5 mum; time-multiplexing control; Buck converters; Costs; DC-DC power converters; Feedback loop; Inductors; MOSFETs; Pulse width modulation; Pulse width modulation converters; Space vector pulse width modulation; Voltage control;
Conference_Titel :
Electron Devices and Solid-State Circuits, 2009. EDSSC 2009. IEEE International Conference of
Conference_Location :
Xi´an
Print_ISBN :
978-1-4244-4297-3
Electronic_ISBN :
978-1-4244-4298-0
DOI :
10.1109/EDSSC.2009.5394235
