Development of a low-power solar energy harvester PMU integrated circuit optimized for indoor environments.
Wireless electronic devices face a common and important constraint: the limited lifespan of their batteries. The concept of quasi-perpetual electronic devices, particularly for tiny and low-power electronic systems, is progressively becoming attainable. En-ergy harvesting can be the part of the solu...
| 主要な著者: | , , |
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| フォーマット: | info:eu-repo/semantics/doctoralThesis |
| 言語: | eng |
| 出版事項: |
Servicio de Publicaciones. Universidad de Navarra.
2024
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| 主題: | |
| オンライン･アクセス: | https://hdl.handle.net/10171/69094 |
| _version_ | 1793400426291265536 |
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| author | Lopez-Gasso, A. (Alberto) Berenguer-Pérez, R.J. (Roque José) Beriain, A. (Andoni) |
| author_facet | Lopez-Gasso, A. (Alberto) Berenguer-Pérez, R.J. (Roque José) Beriain, A. (Andoni) |
| author_sort | Lopez-Gasso, A. (Alberto) |
| collection | DSpace |
| description | Wireless electronic devices face a common and important constraint: the limited lifespan of their batteries. The concept of quasi-perpetual electronic devices, particularly for tiny and low-power electronic systems, is progressively becoming attainable. En-ergy harvesting can be the part of the solution by improving, attenuating or even eliminating this limitation by extending its autonomy. The final goal is to convert them into a virtually perpetual system. Energy Harvesting can be defined as the collection and storage of ambi-ent energy from the surroundings, to later convert it into electrical energy and use it to power a small and low-power electronic devices. These devices are often. The energy harvesting technique is intended to be used in devices where it is impractical or inconvenient to use traditional battery or grid power sources. Moreover, it have recently received more attention due to its in-creasing use in the Internet of Things (IoT) and the appearing of Wireless Sensor Networks (WSN). This work describes an energy-efficient monolithic Power Management Unit (PMU) that includes a charge pump adapted to photovoltaic cells with the capability of charging a large supply capacitor and managing the stored energy efficiently to provide the required supply voltage and power to low energy consumption wireless sensor nodes such as RFID sensor tags. The proposed system starts-up self-sufficiently with a light source lumi-nosity equal to or higher than 245 lux, meaning a voltage input of 595 mV using only a 1.42 cm2 solar cell. The result energy harvester integrates an energy monitor that gives the ability to supply autonomous sensor nodes with discontinuous operation modes. The full PMU occupies an area of 1.073 mm2 using a standard 180 nm CMOS technology. The half-floating architecture of the integrated charge pump avoids losses of charging the top/button plate of the stray capacitors in each clock cycle. Measurements’ results on a fabricated IC exhibit an an output power of 13.9 µW with 70.2 percent of peak-to-peak efficiency at indoor light conditions (680lux) with an output voltage of 2V. |
| format | info:eu-repo/semantics/doctoralThesis |
| id | oai:dadun.unav.edu:10171-69094 |
| institution | Universidad de Navarra |
| language | eng |
| publishDate | 2024 |
| publisher | Servicio de Publicaciones. Universidad de Navarra. |
| record_format | dspace |
| spelling | oai:dadun.unav.edu:10171-690942024-02-19T06:06:51Z Development of a low-power solar energy harvester PMU integrated circuit optimized for indoor environments. Lopez-Gasso, A. (Alberto) Berenguer-Pérez, R.J. (Roque José) Beriain, A. (Andoni) Solar energy harvester. Low-power. Charge pump. PMU. Batterlyless. IoT. Wireless electronic devices face a common and important constraint: the limited lifespan of their batteries. The concept of quasi-perpetual electronic devices, particularly for tiny and low-power electronic systems, is progressively becoming attainable. En-ergy harvesting can be the part of the solution by improving, attenuating or even eliminating this limitation by extending its autonomy. The final goal is to convert them into a virtually perpetual system. Energy Harvesting can be defined as the collection and storage of ambi-ent energy from the surroundings, to later convert it into electrical energy and use it to power a small and low-power electronic devices. These devices are often. The energy harvesting technique is intended to be used in devices where it is impractical or inconvenient to use traditional battery or grid power sources. Moreover, it have recently received more attention due to its in-creasing use in the Internet of Things (IoT) and the appearing of Wireless Sensor Networks (WSN). This work describes an energy-efficient monolithic Power Management Unit (PMU) that includes a charge pump adapted to photovoltaic cells with the capability of charging a large supply capacitor and managing the stored energy efficiently to provide the required supply voltage and power to low energy consumption wireless sensor nodes such as RFID sensor tags. The proposed system starts-up self-sufficiently with a light source lumi-nosity equal to or higher than 245 lux, meaning a voltage input of 595 mV using only a 1.42 cm2 solar cell. The result energy harvester integrates an energy monitor that gives the ability to supply autonomous sensor nodes with discontinuous operation modes. The full PMU occupies an area of 1.073 mm2 using a standard 180 nm CMOS technology. The half-floating architecture of the integrated charge pump avoids losses of charging the top/button plate of the stray capacitors in each clock cycle. Measurements’ results on a fabricated IC exhibit an an output power of 13.9 µW with 70.2 percent of peak-to-peak efficiency at indoor light conditions (680lux) with an output voltage of 2V. 2024-02-13T12:19:24Z 2024-02-13T12:19:24Z 2023-12-15 info:eu-repo/semantics/doctoralThesis https://hdl.handle.net/10171/69094 eng info:eu-repo/semantics/openAccess application/pdf Servicio de Publicaciones. Universidad de Navarra. |
| spellingShingle | Solar energy harvester. Low-power. Charge pump. PMU. Batterlyless. IoT. Lopez-Gasso, A. (Alberto) Berenguer-Pérez, R.J. (Roque José) Beriain, A. (Andoni) Development of a low-power solar energy harvester PMU integrated circuit optimized for indoor environments. |
| title | Development of a low-power solar energy harvester PMU integrated circuit optimized for indoor environments. |
| title_full | Development of a low-power solar energy harvester PMU integrated circuit optimized for indoor environments. |
| title_fullStr | Development of a low-power solar energy harvester PMU integrated circuit optimized for indoor environments. |
| title_full_unstemmed | Development of a low-power solar energy harvester PMU integrated circuit optimized for indoor environments. |
| title_short | Development of a low-power solar energy harvester PMU integrated circuit optimized for indoor environments. |
| title_sort | development of a low-power solar energy harvester pmu integrated circuit optimized for indoor environments. |
| topic | Solar energy harvester. Low-power. Charge pump. PMU. Batterlyless. IoT. |
| url | https://hdl.handle.net/10171/69094 |
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