Non-resonant piezoelectric transformer based power converter for ultra-low-power electronic devices
- Title
- Non-resonant piezoelectric transformer based power converter for ultra-low-power electronic devices
- Author
- 성태현
- Keywords
- Piezoelectricity; Power conversion; Low-power electronics; AC-DC power converters; Piezoelectric transformer
- Issue Date
- 2016-04
- Publisher
- ELSEVIER SCIENCE SA
- Citation
- SENSORS AND ACTUATORS A-PHYSICAL, v. 244, Page. 86-94
- Abstract
- Piezoelectric transformer is used in its resonance frequency range to step-up or-down the input voltage. When the transformer is operated with alternating voltage in the non-resonance frequency range, which can be a few hertz, the transformer input works as an actuator, and the isolated output as a sensor to step-down the voltage. The output voltage has a linear relationship to its input the voltage. In this paper, the piezoelectric transformer in the non-resonant and low frequency range is represented by an equivalent circuit. A power converter that steps-down the mains voltage of 220V and 60 Hz to supply power to a micro-watt consuming wireless sensor node is presented. This small size, fewer component, isolated, low EMI, and no inductive component converter has total input power consumption of 31 mW with 3 V and 11.2 mu W of output voltage and power respectively. (C) 2016 Elsevier B.V. All rights reserved.
- URI
- https://www.sciencedirect.com/science/article/pii/S0924424716301467?via%3Dihubhttp://hdl.handle.net/20.500.11754/48459
- ISSN
- 0924-4247
- DOI
- 10.1016/j.sna.2016.04.001
- Appears in Collections:
- COLLEGE OF ENGINEERING[S](공과대학) > ELECTRICAL AND BIOMEDICAL ENGINEERING(전기·생체공학부) > Articles
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