A single-inductor dual-output switching converter with average current mode control  

作　　者：许伟伟 朱潇挺 洪志良 Killat D 

机构地区：[1]State Key Laboratory of ASIC and System,Fudan University [2]Dialog Semiconductor,Kirchheim-Teck

出　　处：《Journal of Semiconductors》2009年第9期111-116,共6页半导体学报（英文版）

摘　　要：An integrated single-inductor dual-output （SIDO） switching DC-DC converter is presented. The outputs are specified with 1.2 V/400 mA and 1.8 V/200 mA. A decoupling small signal model is proposed to analyze the multi-loop system and to design the on-chip compensators. An average current control mode is introduced with lossless, continuous current detection. The converter has been fabricated in a 0.25μm 2P4M CMOS process. The power efficiency is 86% at a total output power of 840 mW while the output ripples are about 40 mV at an oscillator frequency of 600 kHz.An integrated single-inductor dual-output （SIDO） switching DC-DC converter is presented. The outputs are specified with 1.2 V/400 mA and 1.8 V/200 mA. A decoupling small signal model is proposed to analyze the multi-loop system and to design the on-chip compensators. An average current control mode is introduced with lossless, continuous current detection. The converter has been fabricated in a 0.25μm 2P4M CMOS process. The power efficiency is 86% at a total output power of 840 mW while the output ripples are about 40 mV at an oscillator frequency of 600 kHz.

关 键 词：DC-DC converter single-inductor multiple-output average current mode control on-chip current detection 

分 类 号：TM921.5[电气工程—电力电子与电力传动]