← 返回 JSSC 论文列表JSSC 2020第8期Other0.18µm
A Fully Integrated Multilevel Synchronized-Switch-Harvesting-on-Capacitors Inter
提出一种全集成多级同步电容开关能量采集架构,显著提升压电换能器能量提取效率。
0.18-µm CMOS, 22 Hz, 1.51 µW to 4.82 µW
能量采集压电换能器同步电容开关全集成低频率
▸创新点1:全集成架构(系统创新) - 该论文首次实现了SSHC技术的全集成设计,利用能量收集系统中已有的存储电容,无需额外外部组件,显著降低了系统复杂度和成本,适用于微型化应用场景。
▸创新点2:多级同步电容开关技术(电路创新) - 提出ML-SSHC电路结构,通过多级电容切换实现更高效的能量提取,理论分析显示其功率提取能力达到传统全桥整流器的7.01倍,大幅提升能量转换效率。
▸创新点3:低频适应性突破(方法创新) - 在22Hz极低机械振动频率下仍能稳定工作,且不要求压电采集器具备特殊参数(如高开路电压),突破了现有技术对工作频率和采集器特性的限制。
▸创新点4:0.18µm CMOS工艺实现(工艺创新) - 采用标准CMOS工艺完成全集成芯片设计,实测在1.51-4.82µW功率范围内保持6.71倍以上能效提升,验证了技术方案的可行性和工艺兼容性。
Abstract
This article presents a novel architecture for real-
izing the synchronized-switch-harvesting-on-capacitors (SSHC)
technique used for enhanced energy extraction from piezoelectric
transducers. The proposed architecture allows full integration
by utilizing the storage capacitor already present in most
energy-harvesting systems. A promising circuit implementation
of the technique, named multilevel SSHC (ML-SSHC), is pro-
posed as well, and its performance is analyzed theoretically.
Based on that,