Boost DC/DC的低压启动能力  

Startup Capability of Boost DC/DC Converter

作　　者：向乾尹[1] 冯全源[1] 

机构地区：[1]西南交通大学微电子研究所,四川成都610031

出　　处：《西南交通大学学报》2011年第4期591-597,共7页Journal of Southwest Jiaotong University

基　　金：国家自然科学基金资助项目(60990320;60990323;10876029);国家863计划资助项目(2009AA01Z230)

摘　　要：为了准确预测Boost DC/DC低压启动能力,采用稳态分析方法,分析了电流负载、寄生参数、功率开关饱和电流及导通阻抗、开关频率、启动电路最低工作电压等因素对Boost DC/DC低压启动能力的影响,提出了预测Boost DC/DC恒流负载下最小启动电压的解析模型.将该模型应用于采用0.6μm CMOS工艺的Boost DC/DC设计中,模型计算结果相对HSPICE仿真结果的最大误差为4.5%.本模型可推广至恒定电阻负载的情况.An analytical model was proposed to calculate the minimum startup voltage of a boost DC/DC converter under a constant current load.The factors,such as the current load,the parasitic parameters,the saturation current and on-resistance of the power switch,the switching frequency,and the minimum startup voltage,etc.,which affect the startup capability of the boost DC/DC converter were analyzed with a steady-state analysis method.The model was applied to the design of a boost DC/DC converter with a 0.6 μm CMOS process,and the maximum error of the minimum startup voltage calculated by the proposed model was 4.5% compared with that by the HSPICE simulator.

关 键 词：BoostDC/DC 启动电压 启动能力 稳态分析 

分 类 号：TN710.2[电子电信—电路与系统]