← 返回 JSSC 论文列表JSSC 2013第11期Power Management90nm
Low-Power On-Chip Charge-Recycling DC-DC Conversion Circuit and System Kazuhiro
提出一种电荷回收电路与系统，通过堆叠CPU间的能量复用延长电池寿命。
90nm CMOS工艺，双CPU负载均衡
电荷回收低功耗DC-DC转换LDO稳压器锁步系统
▸创新点1：上下负载分组电荷共享架构（系统创新）。通过将CPU分为上下负载组，利用储能电容实现电荷在组间动态共享，显著提升能量利用率，测试芯片效率达87.1%，较传统LDO方案提升42.7%。
▸创新点2：基于LDO稳压器的动态电压调节（电路创新）。采用七级LDO与升压电容协同控制模块间电压差，支持不同负载下的稳定供电，解决了电荷回收过程中的电压波动问题。
▸创新点3：无电感开关稳压器的片上集成（方法创新）。通过消除外部电感和控制电路，实现完全CMOS工艺集成，面积效率提升，适用于车载锁步系统等紧凑场景。
▸创新点4：任务调度驱动的能效优化策略（系统创新）。提出动态任务调度算法最大化电荷复用率，使架构可扩展至通用系统，突破锁步系统的应用限制。
Abstract
A charge-recycling circuit and system that reus es the
energy between two or more stacked CPUs is proposed in order
to double the life of a battery. In this architecture, CPUs are di-
vided into upper and lower load groups, and electr ical charges are
shared among the stacked CPUs and a tank capacitor. Charges are
temporarily stored in the tank cap acitor and are then reused. To
control divided loads, a high-speed and energy -efficient regulator
is needed. Internal circuit volt age variation betw