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Novel Three Dimension MPPT using Switch Width Modulation for IoT Smart Nodes

S.T. Priya, B Arun, P.Franchis Antonyselvi

Abstract


ABSTRACT

Recent development in integrated circuits (IC) technology and design strategies, specifically in ultra-low energy circuits area, has led a rapid boom of integrated and transportable electronics inside the IoT smart nodes and wearable sensors gadget on chip (SoC). IoT application including biomedical sensors, body area networks and wireless sensors, have taken advantage of one of these progresses. However, with the increasing demand of people desires, several blocks must be included within the IoT SoC. For this reason, a compact, efficient and self-sustained strength management circuit (PMC) with a long life-time layout turns into critical for IoT SoC. As a result, energy scavengers, inclusive of photovoltaic cells (PV), thermos-electric turbines (TEG) and electro-static harvesters, become an interesting option to electricity the power the PMC, for self-sustaining and prolonged life time systems. Novel 3-D maximum power point tracking (3-D MPPT) system for energy harvesting systems (EHS) within Internet of Things (IoT) smart nodes. The proposed 3-D MPPT utilizes a switch width modulation (SWM) technique for improving power efficiency (PE) at idle (<1 µA) and heavy (>300 µA) load modes. The SWM eliminates the gate driver/conduction loss tradeoff in a reconfigurable switched capacitor charge pump (SCCP). The proposed SWM technique modulates the SCCP transfer resistance in percentage to the load condition, input voltage, and Vgs implemented. A cold startup approach is included inside the proposed EHS with a power-aware algorithm for input harvester select purpose. The fabricated test chip in 65-nm CMOS generation can harvest sun and thermal energy from zero.35 V and presents a regulated output voltage at 1 V with the height efficiency of 88% at 2 hundred µW and PE >60% at a hundred nW.

 

Keywords: Energy harvesting system (EHS), Internet- of-Things (IoT), maximum power point tracking (MPPT), photovoltaic (PV) cells power management circuits (PMS), thermoelectric generator (TEG).

 

Cite this Article: S.T. Priya, B. Arun, P. Franchis Antony Selvi. Novel Three Dimension MPPT using Switch Width Modulation for IoT
Smart Nodes. International Journal of Digital Electronics.
2019; 1(2): 28–51p.


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References


J. Wanyeong, O. Sechang, B. Suyoung, L. Yoonmyung, D. Sylvester, and Blaauw, “A 3 nW fully integrated energy harvester based on self- oscillating switched-capacitor DC-DC converter,” in IEEE Int. Solid- State Circuits Conf. Dig. Tech. Papers (ISSCC), Feb. 2014, pp. 398–399, San Francisco, CA, USA.

W. Jung et al., “An ultra-low power fully integrated energy harvester based on self-oscillating switched-capacitor voltage doubler,” IEEE J. Solid-State Circuits, vol. 49, no. 12, pp. 2800–2811, Dec. 2014.

K. Rawy, F. K. George, D. Maurath, and T. T. Kim, “A time-based self- adaptive energy-harvesting MPPT with 5.1-μW power consumption and a wide tracking range of 10-μA to 1-mA,” in Proc. Conf. 42nd Eur. Solid-State Circuits Conf. (ESSCIRC), Sep. 2016, pp. 503–506, Lausanne, Switzerland.

K. Rawy, F. Kalathiparambil, D. Maurath, and T. T.-H. Kim, “A self- adaptive time-based MPPT with 96.2% tracking efficiency and a wide tracking range of 10 μA to 1 mA for IoT applications,” IEEE Trans. Circuits Syst. I, Reg. Papers, vol. 64, no. 9, pp. 2334–2345, Sep. 2017.

S. Bandyopadhyay and A. P. Chandrakasan, “Platform architecture for solar, thermal, and vibration energy combining with MPPT and single inductor,” IEEE J. Solid-State Circuits, vol. 47, no. 9, pp. 2199–2215, Sep. 2012.

D. Bol, E. H. Boufouss, D. Flandre, and J. D. Vos, “A 0.48 mm2 5 μW-10 mW indoor/outdoor PV energy-harvesting management unit in a 65 nm SoC based on a single bidirectional multi-gain/multi-mode switched-cap converter with supercap storage,” in 41th European Solid-State Circuits Conference (ESSCIRC 2015)", Graz (Autriche) (du 14/09/2015 au 18/09/2015) Eur.2012.

J. Kim, P. K. T. Mok, and K. Chulwoo, “A 0.15 V-input energy- harvesting charge pump with dynamic body biasing and adaptive dead- time for efficiency improvement,” in IEEE Int. Solid-State Circuits Conf. Dig. Tech. Papers (ISSCC), Feb. 2014, pp. 414–425.

R. Guo, “High efficiency charge pump based DC-DC converter for wide input/output range applications,” Ph.D. dissertation, Dept. Elect. Eng., North Carolina State Univ., Raleigh, NC, USA, 2010.

O. Lopez-Lapena, M. T. Penella, and M. Gasulla, “A closed-loop maximum power point tracker for subwatt photovoltaic panels,” IEEE Trans. Ind. Electron., vol. 59, no. 3, pp. 1588–1596, Mar. 2012.

L. Xiaosen and E. Sanchez-Sinencio, “A 0.45-to-3 V reconfigurable charge-pump energy harvester with two-dimensional MPPT for Internet of Things,” in Proc. IEEE Int. Solid-State Circuits Conf. (ISSCC), 2015,San Francisco, CA, USA.

E. J. Carlson, K. Strunz, and B. P. Otis, “A 20 mV input boost converter with efficient digital control for thermoelectric energy harvesting,” IEEE J. Solid-State Circuits, vol. 45, no. 4, pp. 741–750, Apr. 2010.

J. Goeppert and Y. Manoli, “Fully integrated startup at 70 mV of boost converters for thermoelectric energy harvesting,” IEEE J. Solid-State Circuits, vol. 51, no. 7, pp. 1716–1726, Jul. 2016, Graz, Austria.

Q. Wan, Y. K. Teh, Y. Gao, and P. K. T. Mok, “Analysis and design of a thermoelectric energy harvesting system with reconfigurable array of thermoelectric generators for IoT applications,” IEEE Trans. Circuits Syst. I, Reg. Papers, vol. 64, no. 9, pp. 2346–2358, Sep. 2017.

P. Gasnier et al., “An autonomous piezoelectric energy harvesting IC based on a synchronous multi-shot technique,” IEEE J. Solid-State Circuits, vol. 49, no. 7, pp. 1561–1570, Jul. 2014.

Y. C. Shih and B. P. Otis, “An inductorless DC–DC converter for energy harvesting with a 1.2-µW bandgap-referenced output controller,” IEEE Trans. Circuits Syst. II, Exp. Briefs, vol. 58, no. 12, pp. 832–836, Dec. 2011.


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