一句话：指出片上电压调节器在细粒度电源控制与高转换效率之间难以兼得的核心矛盾。
论文关注传统片外电压调节器体积大、响应慢，难以通过动态电压频率调节（DVFS）有效利用系统与负载变化的问题。片上集成电压调节器有望在空间和时间上实现细粒度电源控制，从而提升计算机系统能效；但片上调节器的能量转换效率通常远低于片外调节器，会带来显著能量损耗。因此，细粒度电源控制与高电压调节器效率难以同时实现，无论采用新兴片上调节器还是传统片外调节器都面临这一挑战。摘要未给出具体方法、实验评估或量化结果。
Conventional off-chip voltage regulators are typically bulky and slow, and are inefficient at exploiting system and workload variability using Dynamic Voltage and Frequency Scaling (DVFS). On-die integration of voltage regulators has the potential to increase the energy efficiency of computer systems by enabling power control at a fine granularity in both space and time. The energy conversion efficiency of on-chip regulators, however, is typically much lower than off-chip regulators, which results in significant energy losses. Fine-grained power control and high voltage regulator efficiency are difficult to achieve simultaneously, with either emerging on-chip or conventional off-chip regulators.