A novel digital soft-start circuit for DC-DC switching regulator

Author

Xinquan, Lai ; Jianping, Guo ; Weixue, Yu ; Yu, Cao

Author_Institution

Inst. of Electron. CAD, Xidian Univ., Xi´´an

Volume

2

fYear

2005

fDate

24-0 Oct. 2005

Firstpage

554

Lastpage

558

Abstract

A new CMOS-compatible digital soft-start circuit for DC-DC switching regulator is presented in this paper, for which the technical is adopted to eliminate the inrush current and avoid the overshoot of the output voltage. It´s fully integrated on chip, so that the external soft-start capacitor is not in need, which leads to the reduction of the required board space and component cost. Hspice simulation shows that, while the system has an output voltage of 1.5V at a load of 6A, the envelop of inductor current increases placidly at approximately 1.43A/ms and output voltage increases about 16mV every cycle

Keywords

CMOS integrated circuits; switching circuits; voltage regulators; 1.5 V; 6 A; CMOS technology; DC-DC switching regulator; Hspice simulation; digital soft-start circuit; external soft-start capacitor; CMOS digital integrated circuits; Capacitors; Consumer electronics; Inductors; Pulse width modulation; Regulators; Surges; Switches; Switching circuits; Voltage; DC-DC; digital soft start; inrush current; integrated on chip; overshoot;

fLanguage

English

Publisher

ieee

Conference_Titel

ASIC, 2005. ASICON 2005. 6th International Conference On

Conference_Location

Shanghai

Print_ISBN

0-7803-9210-8

Type

conf

DOI

10.1109/ICASIC.2005.1611391

Filename

1611391