Design and Analysis of Energy-Efficient Single-Pulse Piezoelectric Energy Harvester and Power Management IC for Battery-Free Wireless Remote Switch Applications

Lee, Minbok; Yang, Joonseok; Park, Myeong-Jae; Jung, Sung Mi; Kim, Jaeha

doi:10.1109/tcsi.2017.2717383

Cited by 21 publications

(10 citation statements)

References 16 publications

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“…Generally, the VOT presents a larger input range than the COT [26]. To compare the performance, the key design parameters – the peak inductor current ( I L,peak ), f sw , and output voltage ripple ( V ripple ) – of the COT and VOT are obtained from the waveform of the inductor current in a DCM buck converter.…”

Section: Circuit Implementation Of the Proposed Dcm Buck Convertermentioning

confidence: 99%

Bootstrap capacitorless DCM VOT buck converter with dead‐time‐based off‐time calibration for magnetic resonance wireless power transfer

Namgoong

Choi

et al. 2020

IET Power Electronics

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This study reports a miniaturised discontinuous conduction mode (DCM) variable on-time (VOT) buck converter providing an output of 1.8 V in the input range of 3-12 V to support applications with large wireless coupling. Conventionally, an additional large capacitor has been used as a bootstrap capacitor to drive the high-side switch of buck converters, which prevents minimisation. In this study, a standalone momentary power consumption level shifter is proposed to remove the additional bootstrap capacitor and increase the power conversion efficiency (PCE) in the buck converter. A Zener diode is utilised to reduce the power consumption of the level shifter. In addition, a dead-time-based off-time calibration circuit is proposed to further increase the PCE by reducing the low-side conduction loss. The proposed circuit is fabricated with a TSMC 0.18-µm BCD process, and the core circuit occupies an active area of 0.68 mm 2 with two external components. It provides output currents in the range of 20 µA to 3 mA with a maximum switching frequency of 750 kHz. The maximum efficiency of the converter below 5 mW is 80.2%.

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Section: Circuit Implementation Of the Proposed Dcm Buck Convertermentioning

confidence: 99%

Bootstrap capacitorless DCM VOT buck converter with dead‐time‐based off‐time calibration for magnetic resonance wireless power transfer

Namgoong

Choi

et al. 2020

IET Power Electronics

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“…There are many energy sources from which the nodes can harvest energy, including vibration energy [10], solar energy [11, 12], piezoelectric energy [13], and more. The nodes in our BF‐WSN harvest radio frequency energy, a pervasive and blackout‐less energy source.…”

Section: Related Workmentioning

confidence: 99%

Designing prefix code to save energy for wirelessly powered wireless sensor networks

Zhu

Chi

et al. 2018

IET Communications

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“…Most studies on piezoelectric energy harvesting have been performed with single layer [16][17][18][19] or multi-layer piezoelectric device [20] to produce a single voltage for power supply. However, depending on the purpose of the user, it is necessary to apply a dual power supply to an electronic device.…”

Section: Introductionmentioning

confidence: 99%

Self-Powered Operational Amplifying System with a Bipolar Voltage Generator Using a Piezoelectric Energy Harvester

et al. 2019

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Piezoelectric devices previously studied usually generated a single voltage to power an electronic device. However, depending on the user’s purpose, the electronic device may need dual power supply. Here, we report a self-powered bipolar voltage generator using a piezoelectric energy harvester with two piezoelectric devices. When a force is applied to the piezoelectric energy harvester, the two piezoelectric devices separately supply positive and negative voltages to the operational amplifier that requires dual power supply to amplify an AC signal that have positive and negative polarity. At the same time, the harvester supplies additional power to an electronic device through a DC-to-DC converter with an output voltage of 3.3 V. This technique proves the feasibility of applying the piezoelectric energy harvester to operational amplifying systems in the field of sound, earthquake, and sonar that require both bipolar and single voltages without external power sources.

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Design and Analysis of Energy-Efficient Single-Pulse Piezoelectric Energy Harvester and Power Management IC for Battery-Free Wireless Remote Switch Applications

Cited by 21 publications

References 16 publications

Bootstrap capacitorless DCM VOT buck converter with dead‐time‐based off‐time calibration for magnetic resonance wireless power transfer

Bootstrap capacitorless DCM VOT buck converter with dead‐time‐based off‐time calibration for magnetic resonance wireless power transfer

Designing prefix code to save energy for wirelessly powered wireless sensor networks

Self-Powered Operational Amplifying System with a Bipolar Voltage Generator Using a Piezoelectric Energy Harvester

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