基于脉冲跨周期调制的DC-DC变换器自适应电压调节技术  

Adaptive Voltage Scaling Technique for DC-DC Converter Based on Pulse Skip Modulation

作　　者：王东俊[1] 罗萍[1] 彭宣霖 甄少伟[1] 贺雅娟[1] 

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

出　　处：《电子与信息学报》2017年第1期213-220,共8页Journal of Electronics & Information Technology

基　　金：国家自然科学基金(61274027);国家自然科学基金青年基金(61404025)~~

摘　　要：为实现减小数字电路的供电电压来降低其能量消耗的目的,该文提出基于脉冲跨周期调制(PSM)的DCDC变换器自适应电压调节(AVS)技术。AVS技术通过追踪和探测关键路径复制(CPR)的延迟时间自适应地调节数字电路的供电电压。同时,具有自适应占空比的PSM调制模式(APSM)被用来改善轻负载下变换器输出电压的纹波和效率。实验结果显示,当负载工作频率在30~150 MHz范围内变化时,输出电压在0.6~1.5 V之间稳定输出。和传统的固定工作电压相比,该文设计的DC-DC变换器最大可节省83%的能耗。In order to decrease energy consumption of digital circuits by reducing the supply voltage, an Adaptive Voltage Scaling （AVS） for DC-DC converter based on Pulse Skip Modulation （PSM） is proposed. The AVS technique can scale supply voltage adaptively by probir/g and tracking the Critical Path Replica （CPR） delay time. To improve the output voltage ripple and efficiency of converter especially in light load, the PSM with Adaptive ratio duty （APSM） also is used. The experimental results show that the output voltage is well regulated from 0.6- 1.5 V when the operation frequency of load varies within the range of 30-150 MHz. The maximum energy saving of 83% is obtained with the proposed converter compared to the traditional fixed voltage.

关 键 词：DC-DC变换器 自适应电压调节:脉冲跨周期调制 关键路径复制 自适应占空比 

分 类 号：TN624[电子电信—电路与系统]