← 返回 JSSC 论文列表JSSC 2021第6期Power Management0.18µm CMOSBoost ConverterEnergy Harvesting
A 3.5-mV Input Single-Inductor Self-Starting Boost Converter With Loss-Aware MPPT for Efficient Autonomous Body-Heat
一种适用于人体热能收集的自启动升压转换器，采用损耗感知MPPT方案，实现低输入电压下的高效率能量提取。
15–100 mV输入电压范围，峰值效率82%，最低自启动电压50mV
能量收集升压转换器最大功率点跟踪热电发电机低电压
▸单电感自启动升压转换器
▸损耗感知最大功率点跟踪(MPPT)
▸双路径架构实现低至3.5mV的输入电压工作
Abstract
A single-inductor self-starting boost converter is presented, which is suitable for thermoelectric energy harvesting from human body heat. In order to extract maximum energy from a thermoelectric generator (TEG) at small temperature gradients, a loss-aware maximum power point tracking (MPPT) scheme was developed, which enables the harvester to achieve high end-to-end efficiency at low input voltages. The boost converter is implemented in a 0.18- µm CMOS technology and is more than 75% efficient for a matched input voltage range of 15–100 mV , with a peak efficiency of 82%. Enhanced power extraction enables the converter to sustain operation at an input voltage as low as 3.5 mV . In addition, the boost converter self- starts with a minimum TEG voltage of 50 mV leveraging a dual- path architecture without using a dditional off-chip components.