A high-efficiency driver circuit for a gas-sensor microheater based on a switch-mode dc-to-dc converter

Tzu Sen Yang, Jin Chern Chiou

研究成果: Article同行評審

3 引文 斯高帕斯(Scopus)

摘要

Low power consumption is one of the critical factors for successful Internet of Things (IoT) applications. In such applications, gas sensors have become a main source of power consumption because energy conversion efficiency of the microheater is relative over a wide range of operating temperatures. To improve the energy-conversion efficiency of gas-sensor microheaters, this paper proposes integrated switch-mode DC-to-DC power converter technology which we compare with traditional driving methods such as pulse-width modulation and the linear mode. The results indicate that energy conversion efficiency with this proposed method remains over 90% from 150°C to 400°C when using a 3.0, 4.2 and 5.0 V power supply. Energy-conversion efficiency increases by 1–74% compared with results obtained using the traditional driving methods, and the sensing film still detects alcohol and toluene at 200°C and 280°C, respectively, with high energy conversion efficiency. These results show that the proposed method is useful and should be further developed to drive gas-sensor microheaters, and then integrated into the circuits of the complementary metal-oxide-semiconductor micro electro mechanical systems (CMOS-MEMS).

原文English
文章編號5367
頁(從 - 到)1-11
頁數11
期刊Sensors (Switzerland)
20
發行號18
DOIs
出版狀態Published - 2 9月 2020

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