A Fully Integrated Clocked AC-DC Charge Pump for Mignetostrictive Vibration Energy Harvesting
This paper describes a clocked AC-DC charge pump to enable full integration of power converters into a sensor or radio frequency (RF) chip even with low open circuit voltage magnetostrictive vibration energy transducer operating at a low resonant frequency of 10 Hz to 1 kHz. The frequency of the clo...
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| Format: | Article |
| Language: | English |
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MDPI AG
2020-12-01
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| Series: | Electronics |
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| Online Access: | https://www.mdpi.com/2079-9292/9/12/2194 |
| _version_ | 1797544128955809792 |
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| author | Hayato Kawauchi Toru Tanzawa |
| author_facet | Hayato Kawauchi Toru Tanzawa |
| author_sort | Hayato Kawauchi |
| collection | DOAJ |
| description | This paper describes a clocked AC-DC charge pump to enable full integration of power converters into a sensor or radio frequency (RF) chip even with low open circuit voltage magnetostrictive vibration energy transducer operating at a low resonant frequency of 10 Hz to 1 kHz. The frequency of the clock to drive an AC-DC charge pump was up-converted with an on-chip oscillator to increase output power of the charge pump without significantly increasing the circuit area. A model of the system including the charge pump and vibration energy transducer is shown. It was validated by HSPICE simulation and measured, resulting in a prototype chip with an area of 0.11 mm<sup>2</sup> fabricated in a 65 nm 1 V CMOS process. The fabricated charge pump was also measured together with a magnetostrictive transducer. The charge pump converted the power from the transducer to an output power of 4.2 μW at an output voltage of 2.0 V. The output power varied below 3% over a wide input frequency of 10 Hz to 100 kHz, which suggests that universal design of the clocked AC-DC charge pump can be used for transducers with different resonant frequencies. In a low-input voltage region below 0.8 V, the proposed circuit has higher output power compared with the conventional circuits. |
| first_indexed | 2024-03-10T13:55:59Z |
| format | Article |
| id | doaj.art-3a5fe3014142469cb022878ebebdc79d |
| institution | Directory Open Access Journal |
| issn | 2079-9292 |
| language | English |
| last_indexed | 2024-03-10T13:55:59Z |
| publishDate | 2020-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Electronics |
| spelling | doaj.art-3a5fe3014142469cb022878ebebdc79d2023-11-21T01:35:59ZengMDPI AGElectronics2079-92922020-12-01912219410.3390/electronics9122194A Fully Integrated Clocked AC-DC Charge Pump for Mignetostrictive Vibration Energy HarvestingHayato Kawauchi0Toru Tanzawa1Faculty of Engineering, Shizuoka University, Hamamatsu 432-8561, JapanFaculty of Engineering, Shizuoka University, Hamamatsu 432-8561, JapanThis paper describes a clocked AC-DC charge pump to enable full integration of power converters into a sensor or radio frequency (RF) chip even with low open circuit voltage magnetostrictive vibration energy transducer operating at a low resonant frequency of 10 Hz to 1 kHz. The frequency of the clock to drive an AC-DC charge pump was up-converted with an on-chip oscillator to increase output power of the charge pump without significantly increasing the circuit area. A model of the system including the charge pump and vibration energy transducer is shown. It was validated by HSPICE simulation and measured, resulting in a prototype chip with an area of 0.11 mm<sup>2</sup> fabricated in a 65 nm 1 V CMOS process. The fabricated charge pump was also measured together with a magnetostrictive transducer. The charge pump converted the power from the transducer to an output power of 4.2 μW at an output voltage of 2.0 V. The output power varied below 3% over a wide input frequency of 10 Hz to 100 kHz, which suggests that universal design of the clocked AC-DC charge pump can be used for transducers with different resonant frequencies. In a low-input voltage region below 0.8 V, the proposed circuit has higher output power compared with the conventional circuits.https://www.mdpi.com/2079-9292/9/12/2194AC-DCIoTcharge pumpenergy harvestingvibrationmagnetostrictive |
| spellingShingle | Hayato Kawauchi Toru Tanzawa A Fully Integrated Clocked AC-DC Charge Pump for Mignetostrictive Vibration Energy Harvesting Electronics AC-DC IoT charge pump energy harvesting vibration magnetostrictive |
| title | A Fully Integrated Clocked AC-DC Charge Pump for Mignetostrictive Vibration Energy Harvesting |
| title_full | A Fully Integrated Clocked AC-DC Charge Pump for Mignetostrictive Vibration Energy Harvesting |
| title_fullStr | A Fully Integrated Clocked AC-DC Charge Pump for Mignetostrictive Vibration Energy Harvesting |
| title_full_unstemmed | A Fully Integrated Clocked AC-DC Charge Pump for Mignetostrictive Vibration Energy Harvesting |
| title_short | A Fully Integrated Clocked AC-DC Charge Pump for Mignetostrictive Vibration Energy Harvesting |
| title_sort | fully integrated clocked ac dc charge pump for mignetostrictive vibration energy harvesting |
| topic | AC-DC IoT charge pump energy harvesting vibration magnetostrictive |
| url | https://www.mdpi.com/2079-9292/9/12/2194 |
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