一个0.48mm2 5μW-10mW的室内/室外光伏能量收集管理单元，用于65nm SoC，基于单个双向多增益/多模式开关帽转换器和超级帽存储

ESSCIRC Conference 2015 - 41st European Solid-State Circuits Conference (ESSCIRC) Pub Date : 2015-11-02 DOI:10.1109/ESSCIRC.2015.7313872

D. Bol, E. Boufouss, D. Flandre, J. Vos

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引用次数: 18

摘要

我们提出了一个能量收集管理单元，将光伏收集器与存储超级电容器连接起来，同时产生1V稳压电源VREG。堆叠PV电池和VREG之间的直接连接可以实现收集器和供电电路之间虚拟100%的转换效率，而在VREG和超级电容器之间使用单个双向开关电容器DC/DC转换器，可以在具有单个外部滤波电容器的65nm物联网视觉SoC中实现0.48mm2的面积。为了适应0-3V电荷依赖的超级电容电压范围和5μW-10mW宽收割机/负载功率范围，该变换器具有多种电压增益和功率模式的自适应选择。

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A 0.48mm2 5μW-10mW indoor/outdoor PV energy-harvesting management unit in a 65nm SoC based on a single bidirectional multi-gain/multi-mode switched-cap converter with supercap storage

We propose an energy-harvesting management unit to interface a PV harvester with a storage supercapacitor while generating a 1V regulated supply VREG. Direct connection between stacked PV cells and VREG allows virtual 100% conversion efficiency between the harvester and the supplied circuits, while the use of a single bidirectional switched-capacitor DC/DC converter between VREG and the supercap allows 0.48mm2 area in a 65nm IoT vision SoC with a single external filtering capacitor. To cope with the 0-3V charge-dependent supercap voltage range and the wide 5μW-10mW harvester/load power range, the converter features adaptive selection between multiple voltage gains and power modes.

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ESSCIRC Conference 2015 - 41st European Solid-State Circuits Conference (ESSCIRC)

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