大型嵌入式电源设计中的低功耗设计方法研究
Low Power Design Method in the Design of Large Embedded Power
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摘要: 当前的节能方法都是对单一开关控制的嵌入式电源单体进行低功耗设计,在大型嵌入式电源系统的多个电源单体中,开关控制思路很难形成自适应,设计方法存在缺陷.提出一种新的大型嵌入式电源的低功耗设计方法.通过对大型嵌入式电源系统的能耗原理进行分析,建立能耗模型,将电源中的电压转换时间设置成固定的常数,对电源单体上的任务调度按照电压下降的次序进行调整,通过调节任务的合理调度,自适应减少电压转换的次数,降低了动态能耗和电压转换过程中的能量消耗.实验结果表明,提出的方法能够降低大型嵌入式电源系统的能耗.Abstract: The current energy saving methods are of a single switch control embedded power supply unit for low power design, embedded in the power system of multiple power supply unit, switch control thinking is difficult to form adaptive, the defect of design method. Put forward a new large embedded low-power design method of power supply. Based on principle of large energy consumption of the embedded power system were analyzed, and the energy consumption model is set up, the power supply voltage of the switching time is set to a fixed constant, to power the task scheduling according to the order of the voltage drop on the monomer, through adjust the reasonable scheduling of tasks, adaptive to reduce the number of voltage conversion, and reduce the dynamic power consumption and energy consumption of voltage conversion process. The experimental results show that the proposed method can reduce the energy consumption of large embedded power supply system.
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