A 1.2µW SIMO energy harvesting and power management unit with constant peak inductor current control achieving 83–92% efficiency across wide input and output voltages

Aatmesh Shrivastava, Yogesh K. Ramadass, Sudhanshu Khanna, Steven Bartling, Benton H. Calhoun
2014 2014 Symposium on VLSI Circuits Digest of Technical Papers  
This paper presents a single inductor energy harvesting and power management (EHM) unit for ultra-low power (ULP) systems. The proposed circuit harvests energy from solar cells from 0.38V input voltage (Vin) and provides 4 output voltages -storage at 5V and VDDs at 3.3V, 1.5V and 1.2V. A peak inductor current control scheme enables high efficiency operation across wide input and output voltage range. The IC supports maximum power point tracking, battery management, and cold starts from 0.38V Vin.
more » ... tarts from 0.38V Vin.
doi:10.1109/vlsic.2014.6858364 dblp:conf/vlsic/ShrivastavaRKBC14 fatcat:j6rem2nhmzg7docqr6smzq3bxq