摘要
设计了一种利用单个电感实现双路输出的低电压降压型(Buck)DC-DC变换器,提供200mA(1.8V)和400mA(1.2V)的带负载能力.引入平均电流控制模式,并采用了一种无损电流检测的方法.轻负载时电路工作在非连续电流模式(DCM)下.实现了片上补偿和片上软启动.采用TSMC0.25μmCMOS混合信号工艺,版图面积2.2mm×2.2mm.
A design of low voltage single inductor dual output Buck DC-DC converter with maximum output current 200mA（1.8V） and 400mA（1.2V）. Average current control mode is introduced with loasless current detection. Circuit works under discontinuous current mode（DCM） under light load. On-chip compensation and soft start are realized. TSMC 0.25um CMOS mixed signal technology is used with layout area 2.2mm × 2.2mm.
出处
《微电子学与计算机》
CSCD
北大核心
2009年第1期24-28,共5页
Microelectronics & Computer
