中文摘要：

在分析电路时序与温度、电压关系的基础上,提出基于延迟负反馈的硬件自适应电压调节结构。采用包含温度补偿的时延测量电路在线感知关键路径时序余量的变化,通过磁滞PID控制逻辑动态调节电压转换器的供电电压,使功能电路能够保证一定的时序余量不发生时序违规,调低工作电压降低功耗。控制结构采用RTL实现,不需软件参与,应用于浮点运算器的实验结果表明,电路工作温度在-55℃~125℃范围内变化时,功耗减小29.6%,且不发生时序违,使用该技术的集成电路在不同温度下的功耗和电压需求与太阳能帆板-蓄电池的输出特性相适应,有利于能源的高效利用。

英文摘要：

Based on analyses of the relationship of path delay and temperature in different supply voltage,a self-adaptive voltage tuning scheme with path delay feedback implemented by pure hardware was presented.To guarantee necessary timing margin to avoid timing violation,and to tune the work supply voltage as low as possible for power consumption reduction,delay sensor with temperature compensation was used to acquire the critical path delay online,and supply voltage of functional circuit was dynamically tuned using PID algorithm with hysteresis feature.Adaptive supply tuning architecture was implemented by pure hardware without software participation.Floating point unit was used to validate the proposed scheme,results show that when temperature varies from-55℃ to 125℃,power consumption is reduced by 29.6percent,and timing error does not occur.The energy and supply voltage requirements of SOC using this technique are suitable for the output characteristic of solar-battery in different temperatures,benefiting for efficient energy use.