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A Fast and Highly Accurate Battery Charger With Accurate Built-In Resistance Detection

Title
A Fast and Highly Accurate Battery Charger With Accurate Built-In Resistance Detection
Author
권오경
Keywords
Built-in resistance (BIR); charger; constant-current (CC) mode; constant-voltage (CV) mode; fast charging
Issue Date
2018-12
Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
Citation
IEEE TRANSACTIONS ON POWER ELECTRONICS, v. 33, no. 12, page. 10051-10054
Abstract
This letter proposes a fast and highly accurate battery charger for mobile applications. The proposed battery charger accurately detects the built-in resistance (BIR) and determines the transition point from the constant-current (CC) to constant-voltage (CV) modes. It then maximizes and minimizes the durations of the CC and CV modes, respectively, thus reducing the battery charging time. In addition, the proposed charger accurately controls the charging current (IBAT) by employing an adaptive OFF-time-controlled switching charger. The proposed battery charger was fabricated using a 0.18-mu m standard CMOS process. The measurement results showed that with the use of the accurate BIR detection and adaptive OFF-time-control methods, the proposed charger reduced the total charging time by up to 41.2% and achieved IBAT ripple of 52 mA(p-p).
URI
https://ieeexplore.ieee.org/document/8350334https://repository.hanyang.ac.kr/handle/20.500.11754/121077
ISSN
0885-8993; 1941-0107
DOI
10.1109/TPEL.2018.2830747
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > ELECTRONIC ENGINEERING(융합전자공학부) > Articles
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