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A Fully Energy-Autonomous Temperature-to-Time Converter Powered by a Triboelectric Energy Harvester for Biomedical Applications

Cited 9 time in Web of Science Cited 11 time in Scopus

Tan, Joanne Si Ying; Park, Jeong Hoan; Li, Jiamin; Dong, Yilong; Chan, Kwok Hoe; Ho, Ghim Wei; Yoo, Jerald

Issue Date
Institute of Electrical and Electronics Engineers
IEEE Journal of Solid-State Circuits, Vol.56 No.10, pp.2913-2923
This article presents a fully energy-autonomous temperature-to-time converter (TTC), entirely powered up by a triboelectric nanogenerator (TENG) for biomedical applications. Existing sensing systems either consume too much power to be sustained by energy harvesting or have poor accuracy. Also, the harvesting of low-frequency energy input has been challenging due to high reverse leakage of a rectifier. The proposed dynamic leakage suppression full-bridge rectifier (DLS-FBR) reduces the reverse leakage current by more than 1000 x, enabling harvesting from sparse and sporadic energy sources; this enables the TTC to function with a TENG as the sole power source operating at <1-Hz human motion. Upon harvesting 0.6 V in the storage capacitor, the power management unit (PMU) activates the low-power TTC, which performs one-shot conversion of temperature to pulsewidth. Designed for biomedical applications, the TTC enables a temperature measurement range from 15 degrees C to 45 degrees C. The energy-autonomous TTC is fabricated in 0.18- mu m 1P6M CMOS technology, consuming 0.14 pJ/conversion with 0.014-ms conversion time.
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  • College of Engineering
  • Department of Electrical and Computer Engineering
Research Area Biomedical Applications, Energy-Efficient Integrated Circuits


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