A Novel Quick Response of RBCOT With VIC Ripple for Buck Converter

Author

Wen-Wei Chen ; Jiann-Fuh Chen ; Tsorng-Juu Liang ; Lu-Chi Wei ; Jian-Rong Huang ; Wei-Yuan Ting

Author_Institution

Dept. of Electr. Eng., Nat. Cheng Kung Univ., Tainan, Taiwan

Volume

28

Issue

9

fYear

2013

fDate

Sept. 2013

Firstpage

4299

Lastpage

4307

Abstract

A novel quick response of ripple-based constant on-time with virtual inductor current ripple for Buck converter is proposed in this paper. The concept uses the capacitor and the resistor in a series to filter out the output voltage at load transient to dynamically change the width of on-time to prevent the V_out from dropping markedly. Finally, 12-V input voltage, 3.3-V output voltage, and 60-W output power with the novel quick response circuit for the IC of the proposed Buck converter are implemented to verify its viability and superiority.

Keywords

capacitors; power convertors; resistors; RBCOT; VIC ripple; buck converter; capacitor; load transient; output voltage; power 60 W; quick response circuit; resistor; ripple based constant on-time; virtual inductor current ripple; voltage 12 V; voltage 3.3 V; Capacitors; Inductors; Integrated circuits; Oscillators; Resistors; Switching frequency; Voltage measurement; Quick response; ripple-based constant on-time (RBCOT); virtual inductor current (VIC) ripple;

fLanguage

English

Journal_Title

Power Electronics, IEEE Transactions on

Publisher

ieee

ISSN

0885-8993

Type

jour

DOI

10.1109/TPEL.2012.2212461

Filename

6270005