A Low-Power and Low-Voltage Power Management Strategy for On-Chip Micro Solar Cells

Table 2

Comparison of efficiency of proposed boost converters to previously reported boost converter based energy harvesters.

Parameter	Reference [13]	Reference [14]	Reference [15]	Reference [16]	Reference [17]	This work
						MSC1	MSC2	MSC3
Input voltage range (Volt)	0.33–3.0	0.04–0.30	0.5	0.15–0.75	0.5–2.0	0.30–0.38	0.33–0.42	0.32–0.40
Energy harvesting source type	Photovoltaic	Thermoelectric	Photovoltaic	Photovoltaic	Photovoltaic	Photovoltaic	Photovoltaic	Photovoltaic
Managed power () (W)	100	4,430	108	1,100	10,000	25.9	23.7	32.8
Boost converter efficiency	61.0%	NA	NA	87.0%	87.0%	59.2%	62.3%	64.5%
Controller power cons. () (W)	NA	0.4	0.41	5.0	2.1	1.35	0.91	1.12
Harvester overall efficiency	NA	83.0%	78.9%	86.5%	87.0%	54.0%	58.4%	61.1%
Tracking efficiency (/)	NA	NA	NA	96%	80%	96%	94%	97%
End to end harvesting efficiency	NA	83.0%	78.9%	83.0%	70.0%	51.8%	54.9%	59.2%