Design of an oscillator with the simple slope compensation circuit

Author

Gang, Lu ; Wenlin, Gao

Author_Institution

Inst. of Autom. & Inf. Eng., Xi´´an Univ. of Technol., Xi´´an, China

fYear

2009

fDate

25-27 May 2009

Firstpage

2704

Lastpage

2707

Abstract

A window-comparator CMOS oscillator with slope compensation ability, which can be applied in DC-DC converter control IC, is presented in this paper. And the slope compensation circuit, simple and effective, simplifies the whole circuit. Using 0.35 mum CMOS model, the oscillator is simulated by Hspice, and the result indicates that the frequency of the output of the oscillator is stable at 1.2 MHz and the duty cycle is above 90%, which satisfy the requirement.

Keywords

CMOS integrated circuits; DC-DC power convertors; SPICE; comparators (circuits); compensation; integrated circuit design; oscillators; CMOS model; DC-DC converter; HSPICE; control IC; frequency 1.2 MHz; simple slope compensation circuit; size 0.35 mum; window-comparator oscillator; DC-DC power converters; Design automation; Design engineering; Feedback circuits; Frequency; Personal digital assistants; Ring oscillators; Switched capacitor circuits; Switches; Timing; CMOS; slope compensation; window-comparator Oscillator;

fLanguage

English

Publisher

ieee

Conference_Titel

Industrial Electronics and Applications, 2009. ICIEA 2009. 4th IEEE Conference on

Conference_Location

Xi´an

Print_ISBN

978-1-4244-2799-4

Electronic_ISBN

978-1-4244-2800-7

Type

conf

DOI

10.1109/ICIEA.2009.5138655

Filename

5138655