Abstract
This paper presents a fully integrated energy harvesting system that even includes an input capacitor and a simplified ripple correlation control (RCC) maximum power point tracking (MPPT) method for low-power system-on-a-chip applications. The proposed system implements the RCC block with a charge pump (CP) that can be integrated in the chip, instead of the inductive switching converter that is commonly used for conventional RCC methods. The CP changes the input impedance by changing the size of the flying capacitor to ensure system reliability. The simplified RCC method is implemented using a low-power analog divider operated in a subthreshold region. A test chip fabricated in a 180 nm CMOS process achieves over 95% MPPT accuracy with a very small input capacitor of 5 nF and a low quiescent current of 2.6 μA. The chip size of the entire system is 8 mm2, and the harvested power range is from 6 μW to 1.4 mW.
| Original language | English |
|---|---|
| Journal | IEEE Transactions on Power Electronics |
| DOIs | |
| Publication status | Accepted/In press - 2018 Aug 3 |
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Keywords
- Batteries
- Capacitors
- Charge pumps
- Energy harvesting
- Energy Harvesting
- Fully Integrated
- Low Power
- Mathematical model
- Maximum Power Point Tracking
- Photovoltaic cells
- Pins
- Ripple Correlation Control
- Voltage control
ASJC Scopus subject areas
- Electrical and Electronic Engineering
Cite this
Fully Integrated Low-Power Energy Harvesting System with Simplified Ripple Correlation Control for System-on-a-Chip Applications. / Shim, Minseob; Jeong, Junwon; Maeng, Junyoung; Park, Inho; Kim, Chulwoo.
In: IEEE Transactions on Power Electronics, 03.08.2018.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Fully Integrated Low-Power Energy Harvesting System with Simplified Ripple Correlation Control for System-on-a-Chip Applications
AU - Shim, Minseob
AU - Jeong, Junwon
AU - Maeng, Junyoung
AU - Park, Inho
AU - Kim, Chulwoo
PY - 2018/8/3
Y1 - 2018/8/3
N2 - This paper presents a fully integrated energy harvesting system that even includes an input capacitor and a simplified ripple correlation control (RCC) maximum power point tracking (MPPT) method for low-power system-on-a-chip applications. The proposed system implements the RCC block with a charge pump (CP) that can be integrated in the chip, instead of the inductive switching converter that is commonly used for conventional RCC methods. The CP changes the input impedance by changing the size of the flying capacitor to ensure system reliability. The simplified RCC method is implemented using a low-power analog divider operated in a subthreshold region. A test chip fabricated in a 180 nm CMOS process achieves over 95% MPPT accuracy with a very small input capacitor of 5 nF and a low quiescent current of 2.6 μA. The chip size of the entire system is 8 mm2, and the harvested power range is from 6 μW to 1.4 mW.
AB - This paper presents a fully integrated energy harvesting system that even includes an input capacitor and a simplified ripple correlation control (RCC) maximum power point tracking (MPPT) method for low-power system-on-a-chip applications. The proposed system implements the RCC block with a charge pump (CP) that can be integrated in the chip, instead of the inductive switching converter that is commonly used for conventional RCC methods. The CP changes the input impedance by changing the size of the flying capacitor to ensure system reliability. The simplified RCC method is implemented using a low-power analog divider operated in a subthreshold region. A test chip fabricated in a 180 nm CMOS process achieves over 95% MPPT accuracy with a very small input capacitor of 5 nF and a low quiescent current of 2.6 μA. The chip size of the entire system is 8 mm2, and the harvested power range is from 6 μW to 1.4 mW.
KW - Batteries
KW - Capacitors
KW - Charge pumps
KW - Energy harvesting
KW - Energy Harvesting
KW - Fully Integrated
KW - Low Power
KW - Mathematical model
KW - Maximum Power Point Tracking
KW - Photovoltaic cells
KW - Pins
KW - Ripple Correlation Control
KW - Voltage control
UR - http://www.scopus.com/inward/record.url?scp=85051044268&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85051044268&partnerID=8YFLogxK
U2 - 10.1109/TPEL.2018.2863390
DO - 10.1109/TPEL.2018.2863390
M3 - Article
AN - SCOPUS:85051044268
JO - IEEE Transactions on Power Electronics
JF - IEEE Transactions on Power Electronics
SN - 0885-8993
ER -