An adaptive slope compensation circuit for buck DC-DC converter

Author

Yanming, Li ; Xinquan, Lai ; Fuji, Chen ; Bing, Yuan ; Xinzhang, Jia

Author_Institution

Xidian Univ., Xian

fYear

2007

fDate

22-25 Oct. 2007

Firstpage

608

Lastpage

611

Abstract

An adaptive slope compensation circuit applied to buck DC-DC converters is presented in this paper. Based on the basic theory of slope compensation, the conditional expression of the loop stability is gained. According to the conditional expression, using feed-forward control of the input voltage and the feed-back control of the output voltage, the slope compensation is provided with adaptivity, which makes the system stable with the variation of duty cycle all the time. In addition, the proposed slope compensation circuit improves the system´s loading capacity and transient response in high duty cycle. The circuit is designed on the base of Samsung BCH4 process, and its performances have been verified by Hspice simulation.

Keywords

DC-DC power convertors; SPICE; compensation; integrated circuit design; transient response; Hspice simulation; Samsung BCH4 process; adaptive slope compensation circuit; buck DC-DC converter; circuit design; feedback control; feedforward control; loop stability; system loading capacity; transient response; Circuit simulation; Circuit stability; Control systems; DC-DC power converters; Feedforward systems; Inductors; Microelectronics; Signal design; Transient response; Voltage control;

fLanguage

English

Publisher

ieee

Conference_Titel

ASIC, 2007. ASICON '07. 7th International Conference on

Conference_Location

Guilin

Print_ISBN

978-1-4244-1132-0

Electronic_ISBN

978-1-4244-1132-0

Type

conf

DOI

10.1109/ICASIC.2007.4415704

Filename

4415704