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

被引:1
|
作者
Zhu Xiaoting [1 ]
Hong Zhiliang [1 ]
Killat, D. [1 ,2 ]
机构
[1] Fudan Univ, State Key Lab ASIC & Syst, Shanghai 201203, Peoples R China
[2] Dialog Semicond, Kirchheim unter Teck, Germany
关键词
DC-DC converter; single-inductor multiple-output; average current mode control; on-chip current detection;
D O I
10.1088/1674-4926/30/9/095012
中图分类号
O469 [凝聚态物理学];
学科分类号
070205 ;
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 0.25 mu m 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.
引用
收藏
页数:6
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