Towards a Pulse-Based Lithium Polymer Battery Charger with Simple Built-in Resistance Compensation in Biomedical Applications
- Authors
- Kim, Yemin; Lee, Junhyuck; Lee, Byunghun
- Issue Date
- Oct-2023
- Publisher
- Institute of Electrical and Electronics Engineers Inc.
- Keywords
- Battery charger; built-in resistance (BIR); implantable medical devices; Lithium polymer battery; pulse charging
- Citation
- BioCAS 2023 - 2023 IEEE Biomedical Circuits and Systems Conference, Conference Proceedings, pp 1 - 5
- Pages
- 5
- Indexed
- SCOPUS
- Journal Title
- BioCAS 2023 - 2023 IEEE Biomedical Circuits and Systems Conference, Conference Proceedings
- Start Page
- 1
- End Page
- 5
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/196371
- DOI
- 10.1109/BioCAS58349.2023.10389159
- ISSN
- 2163-4025
2766-4465
- Abstract
- This paper presents a battery charger designed for biomedical devices in wireless power transfer (WPT) system that compensates for the effects of built-in resistance (BIR) and utilizes pulse current parameters optimized for the target battery model. The latched comparator with low kickback noise introduced for BIR compensation accurately detects the battery cell voltage, enabling the realization of a compact chip size without the need for additional complex calculation circuitry. Compared to the conventional constant current/ constant voltage (CC/CV) charging method, the charging time is reduced by approximately 17.5%. In addition, it has the smallest size of about 0.017mm2 and simplest implementation compared to other systems capable of BIR detection.
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