Self-Reduction Quiescent Current Low Power Low Dropout Regulator for SoC Application

摘要：

　　A low power low-dropout (LDO) voltage regulator with self-reduction quiescent current is proposed in this paper.This proposed capacitorless LDO for Silicon-on-Chip (SoC) application has introduced a self-adjustable low-impedance circuitry at the output of LDO to attain stability critically during low output load current (less than a few hundred of micro-ampere).When the LDO load current increases,it reduces the LDO output impedance and moved the pole towards higher frequency away from the dominant pole and improving the system stability.When this happen,less amount of quiescent current is needed for the low-impedance circuitry to sustain the low output impedance.In this proposed LDO,the quiescent current that been used to sustain the low output impedance will be self-reduced when the output load current increases.Thus,the reduction of quiescent current at low output load current has tremendously improved the efficiency.The simulation results have shown a promising stability at low load current 0~1mA.The dropout voltage for this LDO is only 100mV at 1.2V supply.The proposed LDO is validated using Silterra 0.13μm CMOS process model and designed with high efficiency at low output load current.

关键词： LDO low dropout regulator tow power quiescent current

作者: Lee Chu Liang Roslina Mohd Sidek

作者单位: Multimedia University,Jalan Multimedia,61300 Cyberjaya,Selangor,Malaysia University Putra Malaysia,43400 UPM Serdang,Selangor,Malaysia

会议类型: 国际会议

会议名称: the 2012 International Conference on Manufacturing Engineering and Automation (2012年制造工程与自动化国际会议(ICMEA2012))

会议地点: 广州

会议语种:英文

页码: 2632-2635

在线出版日期: 2012-11-16（万方平台首次上网日期，不代表论文的发表时间）