A fully autonomous pulsed synchronous charge extractor for high-voltage piezoelectric harvesters
This paper presents a fully autonomous, self-adjusting pulsed synchronous charge extractor chip optimized for piezoelectric harvesters with an output voltage from 3V to 18V. The chip which has been fabricated in a 0.35 μm CMOS process is supplied exclusively by the buffer capacitor where the harvest...
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| creator | Hehn, T. Maurath, D. Hagedorn, F. Marinkovic, D. Kuehne, I. Frey, A. Manoli, Y. |
| description | This paper presents a fully autonomous, self-adjusting pulsed synchronous charge extractor chip optimized for piezoelectric harvesters with an output voltage from 3V to 18V. The chip which has been fabricated in a 0.35 μm CMOS process is supplied exclusively by the buffer capacitor where the harvested energy is stored in. Due to the low power consumption, the chip can handle a minimum piezo output power of 30μW. The system performs a startup from an uncharged buffer capacitor and operates in the adaptive mode at storage buffer voltages from 1.4 V to 5V. The implementation of the improved switching technique increases the chip efficiency by up to 15% compared to the commonly used Synchronous Electric Charge Extraction technique and enables the chip efficiency to reach values of up to 90%. |
| doi_str_mv | 10.1109/ESSCIRC.2011.6044984 |
| format | Conference Proceeding |
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| identifier | ISSN: 1930-8833 |
| ispartof | 2011 Proceedings of the ESSCIRC (ESSCIRC), 2011, p.371-374 |
| issn | 1930-8833 2643-1319 |
| language | eng |
| recordid | cdi_ieee_primary_6044984 |
| source | IEEE Electronic Library (IEL) Conference Proceedings |
| subjects | Buffer storage Capacitors Coils Detectors Switches Transistors |
| title | A fully autonomous pulsed synchronous charge extractor for high-voltage piezoelectric harvesters |
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