功率管分段驱动技术应用研究  

Applied Research on Segmented Output Stage Driving Technique

作　　者：周才强 罗萍[1] 胡永贵[2] 

机构地区：[1]电子科技大学电子薄膜与集成器件国家重点实验室,成都610054 [2]中国电子科技集团公司第二十四研究所,重庆400060

出　　处：《微电子学》2015年第6期735-738,共4页Microelectronics

基　　金：国家自然科学基金资助项目(61274027);模拟集成电路重点实验室基金资助项目(9140C090503140C09045)

摘　　要：高频率和高效率成为电源管理芯片的必然发展方向。功率管分段技术作为轻载下效率提升的重要技术之一,在高频率的工作环境下的应用值得研究。基于降压型DC-DC电路,阐述了分段驱动技术的原理,并在高开关频率、不同工艺下,对系统效率进行仿真。通过对比分析,得出适合高频率的功率管分段驱动方案,及其在不同工艺条件下的应用规律。High efficiency and high frequency are the development tendency of power management ICs. Segmented output stage is one of the important techniques to improve efficiency in light load. Its application in high frequency is worthy of studying. A principle of segmented output stage driving based on the buck DC-DC was presented, and the system efficiency in high switching frequency and different processes was simulated. A segmented output stage driving scheme in high frequency was obtained based on comparison of the simulation results, and the application law under different processes was given finally.

关 键 词：电源管理芯片 分段驱动 轻负载 高频率 

分 类 号：TN432[电子电信—微电子学与固体电子学]