Title :
A current-mode DC-DC converter using a quadratic slope compensation scheme
Author :
Kawabata, Chihiro ; Sugimoto, Yasuhiro
Author_Institution :
Grad. Sch. of E. E. & C. Eng., Chuo Univ., Tokyo
Abstract :
A quadratic slope compensation scheme for a current-mode DC-DC converter to obtain stable frequency characteristics without depending on the input and output voltages is proposed. A 5 MHz and 500 mA buck DC-DC converter with input voltages ranging from 3.3 V to 2.5 V and with output voltages ranging from 2.5 V to 0.5 V was fabricated by using a 0.35 mum CMOS process to verify the effectiveness of the scheme. Little variation of frequency characteristics at frequencies above 200 KHz for the various input and output voltages was observed.
Keywords :
CMOS integrated circuits; DC-DC power convertors; power integrated circuits; CMOS process; DC-DC converter; current 5 mA; current mode; frequency 5 MHz; quadratic slope compensation scheme; size 0.35 mum; voltage 2.5 V to 0.5 V; voltage 3.3 V to 2.5 V; Bandwidth; CMOS process; Clocks; DC-DC power converters; Feedback loop; Frequency conversion; Helium; Inductors; Virtual colonoscopy; Voltage control;
Conference_Titel :
Design Automation Conference, 2009. ASP-DAC 2009. Asia and South Pacific
Conference_Location :
Yokohama
Print_ISBN :
978-1-4244-2748-2
Electronic_ISBN :
978-1-4244-2749-9
DOI :
10.1109/ASPDAC.2009.4796458
