A 4.5-to-16μW integrated triboelectric energy-harvesting system based on high-voltage dual-input buck converter with MPPT and 70V maximum input voltage

Maeng, Junyoung; Lim, Dongju; Shim, Minseob; Jeong, Junwon; Kim, Chulwoo

doi:10.1109/isscc.2018.8310226

Cited by 18 publications

(9 citation statements)

References 2 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…For harvesting energy under periodic input excitation, a maximum power point tracking technique [15,16,17,18] is employed, which tracks the maximum power point at the excitation frequency. However, under random excitation conditions, maximum power point tracking cannot be employed since there is no fixed operating frequency/open circuit voltage for which the harvesting operation can be optimized [13,14].…”

Section: Harvester Maximum Energy Extraction Condition and Top Levmentioning

confidence: 99%

A High-Voltage Energy-Harvesting Interface for Irregular Kinetic Energy Harvesting in IoT Systems with 1365% Improvement Using All-NMOS Power Switches and Ultra-low Quiescent Current Controller

Saif

Khan

Lee

et al. 2019

Sensors

View full text Add to dashboard Cite

An energy-harvesting interface for kinetic energy harvesting from high-voltage piezoelectric and triboelectric generators is proposed in this paper. Unlike the conventional kinetic energy-harvesting interfaces optimized for continuous sinusoidal input, the proposed harvesting interface can efficiently handle irregular and random high voltage energy inputs. An N-type mosfet (NMOS)-only power stage design is introduced to simplify power switch drivers and minimize conduction loss. Controller active mode power is also reduced by introducing a new voltage peak detector. For efficient operation with potentially long intervals between random kinetic energy inputs, standby power consumption is minimized by monitoring the input with a 43 pW wake-up controller and power-gating all other circuits during the standby intervals. The proposed harvesting interface can harvest energy from a wide range of energy inputs, 10 s of nJ to 10 s of µJ energy/pulse, with an input voltage range of 5–200 V and an output range of 2.4–4 V under discontinuous as well as continuous excitation. The proposed interface is examined in two scenarios, with integrated power stage devices (maximum input 45 V) and with discrete power stage devices (maximum input 200 V), and the harvesting efficiency is improved by up to 600% and 1350%, respectively, compared to the case when harvesting is performed with a full bridge rectifier.

show abstract

Section: Harvester Maximum Energy Extraction Condition and Top Levmentioning

confidence: 99%

A High-Voltage Energy-Harvesting Interface for Irregular Kinetic Energy Harvesting in IoT Systems with 1365% Improvement Using All-NMOS Power Switches and Ultra-low Quiescent Current Controller

Saif

Khan

Lee

et al. 2019

Sensors

View full text Add to dashboard Cite

show abstract

“…Among these sources, vibration energy has been extensively investigated due to the abundance of vibrations in the ambient environment. For this purpose, various electromechanical transducers, such as electromagnetic [10], triboelectric [11], and piezoelectric [12] transducers, are usually utilized.…”

Section: Introductionmentioning

confidence: 99%

Dual Piezoelectric Energy Investing and Harvesting Interface for High-Voltage Input

Khan

Saif

Lee

et al. 2021

Sensors

View full text Add to dashboard Cite

A novel harvesting interface for multiple piezoelectric transducers (PZTs) is proposed for high-voltage energy harvesting. Pre-biasing a PZT prior to its mechanical deformation increases its damping force, resulting in higher energy extraction. Unlike the conventional harvesters where a PZT-generated output is assumed to be continuous sinusoidal and output polarity is assumed to be alternating every cycle, PZT-generated output from human motion is expected to be random. Therefore, in the proposed approach, energy is invested to the PZT only when PZT deformation is detected. Upon the motion detection, energy stored at a storage capacitor (CSTOR) from earlier energy harvesting cycle is invested to pre-bias PZT, enhancing energy extraction. The harvested energy is transferred to back CSTOR for energy investment on the next cycle and then excess energy is transferred to the battery. In addition, partial electric charge extraction (PECE) is adapted to extract a partial amount of charges from the PZT every time its voltage approaches the process limit of 40 V. Simulations with 0.35 µm BCD process show 7.61× (with PECE only) and 8.38× (with PECE and energy investment) improvement compared to the conventional rectifier-based harvesting scheme Proposed harvesting interface successfully harvests energy from excitations with open-circuit voltages up to 100 V.

show abstract

“…Ambient energy harvesting has been adapted as a solution to prolong battery life or make these devices self-powered using various harvesting sources [1][2][3][4][5]. However, to harvest energy from vibrations produced by human motion, piezoelectric transducers (PZTs) [6][7][8] and triboelectric nano-generators (TENG) [9,10] are the most suitable options.…”

Section: Introductionmentioning

confidence: 99%

“…Although there have been many harvesting interface designs proposed for low-voltage sources [11][12][13], few designs have been proposed for high-voltage sources. However, recently, a trend of energy harvesting from excitations with high open-circuit voltage (V OC ) generated by PZTs [6,14] and TENGs [9,10] has been observed. Partial electric charge extraction (PECE) [14] can theoretically handle excitations with unlimited V OC .…”

Section: Introductionmentioning

confidence: 99%

A Piezoelectric Harvesting Interface with Capacitive Partial Electric Charge Extraction for Energy Harvesting from Irregular High-Voltage Input

2020

View full text Add to dashboard Cite

A fully integrated piezoelectric energy harvesting interface is proposed for harvesting energy from irregular human motion. To handle irregular pulse inputs generated by the piezoelectric transducer (PZT), the proposed harvesting interface includes a wake-up controller that activates the harvesting interface only when human motion is detected and deformation is applied on the piezoelectric material, thereby keeping static power loss low. The PZT output voltage is increased to its peak voltage by removing any type of external load capacitance seen by the PZT during its deformation. Once the peak voltage is detected, a multi-voltage conversion-ratio-based switched-capacitor circuit is activated to transfer PZT-generated energy to the battery in multiple ratio steps to maximize the conversion efficiency, with the help of a carefully designed harvesting controller. To deal with open-circuit voltages (V OCS ) higher than the maximum voltage tolerated (V MAX ) by available technology, capacitive partial electric charge extraction is activated every time the PZT output voltage approaches the V MAX . The proposed harvesting interface extracts 3.37 times more energy than a conventional full-bridge rectifier-based harvesting scheme.

show abstract

A 4.5-to-16μW integrated triboelectric energy-harvesting system based on high-voltage dual-input buck converter with MPPT and 70V maximum input voltage

Cited by 18 publications

References 2 publications

A High-Voltage Energy-Harvesting Interface for Irregular Kinetic Energy Harvesting in IoT Systems with 1365% Improvement Using All-NMOS Power Switches and Ultra-low Quiescent Current Controller

A High-Voltage Energy-Harvesting Interface for Irregular Kinetic Energy Harvesting in IoT Systems with 1365% Improvement Using All-NMOS Power Switches and Ultra-low Quiescent Current Controller

Dual Piezoelectric Energy Investing and Harvesting Interface for High-Voltage Input

A Piezoelectric Harvesting Interface with Capacitive Partial Electric Charge Extraction for Energy Harvesting from Irregular High-Voltage Input

Contact Info

Product

Resources

About