A 10 mV-Input Boost Converter With Inductor Peak Current Control and Zero Detection for Thermoelectric and Solar Energy Harvesting With 220 mV Cold-Start and-14.5 dBm, 915 MHz RF Kick-Start
A 10 mV-Input Boost Converter With Inductor Peak Current Control and Zero Detection for Thermoelectric and Solar Energy Harvesting With 220 mV Cold-Start and-14.5 dBm, 915 MHz RF Kick-Start
复制标题
DOI：
10.1109/jssc.2015.2412952
复制
发表时间：
2015-08-01
影响因子：
5.4
通讯作者：
Calhoun, Benton H.
中科院分区：
文献类型：
--
作者：
Shrivastava, Aatmesh;Roberts, Nathan E.;Calhoun, Benton H.
用于130 nm CMOS热电能量收集的升压转换器可从10 mV输入实现能量收集，从而使可穿戴身体传感器能够在低热梯度下继续工作。该设计采用峰值电感电流控制方案和占空比失调补偿比较器，在宽输入和输出电压范围内保持高效率。测得的效率范围从53%（V-I = 20 mV）到83%（V-I = 300 mV）的峰值效率。冷启动电路从220 mV开始升压转换器的工作，RF kick-start电路从-14.5 dBm开始，RF功率为915 MHz。
A boost converter for thermoelectric energy harvesting in 130 nm CMOS achieves energy harvesting from a 10 mV input, which allows wearable body sensors to continue operation with low thermal gradients. The design uses a peak inductor current control scheme and duty cycled, offset compensated comparators to maintain high efficiency across a broad range of input and output voltages. The measured efficiency ranges from 53% at V-I = 20 mV to a peak efficiency of 83% at V-I = 300 mV. A cold-start circuit starts the operation of the boost converter from 220 mV, and an RF kick-start circuits starts it from - 14.5 dBm at 915 MHz RF power.