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All Journal International Journal of Power Electronics and Drive Systems (IJPEDS)
Ouremchi, Mounir
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Control & Systems Engineering Electrical & Electronics Engineering

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A Li-ion battery charger based on LDO regulator with pre-charge mode in 180 nm CMOS technology Ouremchi, Mounir; El Khadiri, Karim; Qjidaa, Hassan; Jamil, Mohammed Ouazzani
International Journal of Power Electronics and Drive Systems (IJPEDS) Vol 15, No 2: June 2024
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijpeds.v15.i2.pp659-669

Abstract

This paper presents a novel Li-Ion battery charger that utilizes a low-dropout (LDO) regulator and incorporates four control modes: low constant current mode, pre-charge current mode, fast constant current mode, and constant voltage mode. The charger aims to meet specific criteria such as high precision, high efficiency, and small form factor. Through simulation results, the following specifications were obtained using a 1.8 V supply in a 0.18 μm complementary metal–oxide–semiconductor (CMOS) technology: a trickle current of 124.7 mA, a pre-charge current of 466.94 mA, a maximum charge current of 1.06 A, and a charge voltage of 4.21 V. The proposed charger demonstrates an efficiency of 92%.
Co-Authors El khadiri, Karim Jamil, Mohammed Ouazzani Qjidaa, Hassan