DC Field | Value | Language |
---|---|---|
dc.contributor.author | Ko, Min-Woo | ko |
dc.contributor.author | Gang, Gyeong-Gu | ko |
dc.contributor.author | Kim, Ki-Duk | ko |
dc.contributor.author | Lee, Ji-Hun | ko |
dc.contributor.author | Koh, Seoktae | ko |
dc.contributor.author | Kong, Taehwang | ko |
dc.contributor.author | Kim, Sang-Ho | ko |
dc.contributor.author | Lee, Sungyong | ko |
dc.contributor.author | Choi, Michael | ko |
dc.contributor.author | Shin, Jongshin | ko |
dc.contributor.author | Cho, Gyu-Hyeong | ko |
dc.contributor.author | Kim, Hyun-Sik | ko |
dc.date.accessioned | 2020-03-25T02:20:41Z | - |
dc.date.available | 2020-03-25T02:20:41Z | - |
dc.date.created | 2020-03-09 | - |
dc.date.created | 2020-03-09 | - |
dc.date.issued | 2020-02-18 | - |
dc.identifier.citation | 2020 IEEE International Solid-State Circuits Conference (ISSCC), pp.204 - 205 | - |
dc.identifier.issn | 0193-6530 | - |
dc.identifier.uri | http://hdl.handle.net/10203/273491 | - |
dc.description.abstract | As internet-of-things (IoT) devices continue to be installed everywhere, the concept of disposable IoT is emerging owing to better cost-efficiency and ease of maintenance without battery recharging. Lasting several years, IoTs powered with standard alkaline batteries can be a promising solution due to the long shelf life, low cost, and high reliability of these batteries as compared to the Li-ion type. As shown in the top portion of Fig. 11.8.1, a single alkaline cell has a maximum voltage of 1.5V, but it can decay down to 0.9V [1]. To power an IoT device operating with mathrm{V} {mathrm{DD}}=2mathrm{V}, a variety of design options can be considered, such as the battery configuration and the power conversion topology, as shown in Fig. 11.8.1 (bottom). The first approach is step-down conversion [2], [3] from multi-cell batteries (3×BATs) connected in series. In this configuration, cell-balancing must be carefully considered; otherwise, the energy of the BATs cannot be fully utilized if any weak cells exist among them. Considering the power conversion stage, the input RMS current mathrm{I} {mathrm{IN},mathrm{RMS}} becomes much higher than the average current mathrm{I} {mathrm{IN},mathrm{AVG}} due to the inherently discontinuous mathrm{I} {mathrm{IN}} supplied from batteries, resulting in a significant power loss in the series combination of the direct current resistance (mathrm{R} {mathrm{DCR}, mathrm{BAT}}) of batteries which in the case of 3 batteries in series is 3times mathrm{R} {mathrm{DCR}, mathrm{BAT}} (-300m Omega). Regarding step-up conversion [4], [5] with parallel-connected batteries, most of the energy imbalances are compelled to be uselessly wasted via reverse currents mathrm{I} {mathrm{B}} ' The mathrm{I} {mathrm{B}} also can cause explosion or leakage of corrosive substances. Furthermore, the inductor current mathrm{I} {mathrm{L}} is likely to be high, caused by the discontinuous mathrm{I} {mathrm{D}} delivered to the output; this significantly contributes to the power loss with a large mathrm{R} {mathrm{DCR},mathrm{IND}} of the inductor. In summary, the battery cell imbalance and the discontinuous input/output (I/O) current of converter are perhaps the major issues that prevent the full utilization of alkaline batteries in IoT applications. | - |
dc.language | English | - |
dc.publisher | IEEE | - |
dc.title | A 96.8%-Efficiency Continuous Input/Output-Current Step-Up/Down Converter Powering Disposable IoTs with Reconfigurable Multi-Cell-Balanced Alkaline Batteries | - |
dc.type | Conference | - |
dc.identifier.wosid | 000570129800077 | - |
dc.identifier.scopusid | 2-s2.0-85083846682 | - |
dc.type.rims | CONF | - |
dc.citation.beginningpage | 204 | - |
dc.citation.endingpage | 205 | - |
dc.citation.publicationname | 2020 IEEE International Solid-State Circuits Conference (ISSCC) | - |
dc.identifier.conferencecountry | US | - |
dc.identifier.conferencelocation | San Francisco, CA | - |
dc.identifier.doi | 10.1109/ISSCC19947.2020.9062896 | - |
dc.contributor.localauthor | Cho, Gyu-Hyeong | - |
dc.contributor.localauthor | Kim, Hyun-Sik | - |
dc.contributor.nonIdAuthor | Kong, Taehwang | - |
dc.contributor.nonIdAuthor | Kim, Sang-Ho | - |
dc.contributor.nonIdAuthor | Lee, Sungyong | - |
dc.contributor.nonIdAuthor | Choi, Michael | - |
dc.contributor.nonIdAuthor | Shin, Jongshin | - |
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