Title :
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
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;
Conference_Titel :
ASIC, 2005. ASICON 2005. 6th International Conference On
Conference_Location :
Shanghai
Print_ISBN :
0-7803-9210-8
DOI :
10.1109/ICASIC.2005.1611391
