Li-Ion Battery Charger Based on LDO Regulator for Portable Device Power Management

Ouremchi, Mounir; Alaoui, Mustapha El; Farah, Fouad; Khadiri, Karim El; Qjidaa, Hassan; Lakhssassi, Ahmed; Tahiri, Ahmed

doi:10.1109/irsec.2018.8702961

Cited by 8 publications

(4 citation statements)

References 9 publications

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“…The proposed design necessitates the use of four voltage references (Vref1, Vref2, Vref3, Vref4) and employs a multi-output bandgap voltage reference. Figure 9 showcases a precision temperature-compensated CMOS bandgap reference [19]- [22]. To enhance its functionality, four external stages have been added to generate reference voltages: Vref1 = 1.37 V, Vref2 = 511.89 mV, Vref3 = 1.41 V, and Vref4 = 993.3 mV.…”

Section: Bandgap Referencementioning

confidence: 99%

A Li-ion battery charger based on LDO regulator with pre-charge mode in 180 nm CMOS technology

Ouremchi,

El Khadiri,

Qjidaa

et al. 2024

IJPEDS

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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%.

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Section: Bandgap Referencementioning

confidence: 99%

A Li-ion battery charger based on LDO regulator with pre-charge mode in 180 nm CMOS technology

Ouremchi,

El Khadiri,

Qjidaa

et al. 2024

IJPEDS

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“…After the CC charging regime, the charging process goes into the CV regime to prevent the overcharging [3]- [5]. Our method builds on: i) checking the existence sources by using Hysteresis comparators which compare the input voltage with a reference voltage Vref, ii) ensuring the switch between sources using a logical circuit that drives the source to the power stage by priority and iii) modified direct current (DC-DC) Buck converter allows ensuring the CC/CV charging modes with a proposed mode selector system, while always avoiding voltage drops due to switching between sources and ensuring high efficiency [6], [7]. This paper is organized: the second part will cover the descriptions and simulations of the proposed battery charger that includes the switching solution, so it will present in detail the architecture and functionality of each block composing the proposed Buck-type converter to charge the Li-ion battery.…”

Section: Introductionmentioning

confidence: 99%

High efficiency multi power source control constant current/constant voltage charger lithium-ion battery based on the buck converter

Boumedra

Diani²,

Khadiri³

et al. 2023

IJECE

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This paper proposes the design and simulation of a constant current/constant voltage (CC/CV) multi-power source lithium-ion (Li-ion) battery charging system based on the Buck typology. The aim of this new design that uses the Buck converter with multiple numbers of sources, is to provide sufficient energy for battery charging, with an analog switch to select the active source that has priority to guarantee the continuity of the charging without interruption. As well as the transition between the charging modes is smooth that is provided by a multiplexed switcher. At the same time is increases the efficiency of the system by using fewer power dissipation components and low output ripple. The obtained results show that the Li-ion battery can be successfully charged without reducing its life cycle. In the global, those technics allow reducing financial costs. This allows such a solution to be well-positioned in the industrial market (electric vehicles (EV) and medical).

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“…The LDO-based charger respondent for such requests cause of its low current ripple and it may be inserted into the chip without a descriptive component [12]. The lower efficiency is a great problem for it, so the utilization of the Power-MOS as a variable current source is a solution of its low efficiency and also to minimize it dropout [13]. The switching based requires an advanced circuit design to realize a high efficiency, it gives a wide range of the input/output voltage [14].…”

Section: Introductionmentioning

confidence: 99%

A high efficiency and high speed charge of Li-Ion battery charger interface using switching-based technique in 180 nm CMOS technology

Alaoui

Farah

Khadiri

et al. 2021

IJPEDS

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In this work, the design and analysis of new Li-Ion battery charger interface using the switching-based technique is proposed for high efficiency, high speed charge and low area. The high efficiency, the lower size area and the fast charge are the more important norms of the proposed Li-Ion battery charger interface. The battery charging is completed passes to each charging mode: The first mode is the trickle charge mode (TC), the second mode is the constant current mode (CC) and the last mode is the constant voltage mode (CV), in thirty three minutes. The new Li-Ion battery charger interface is designed, simulated and layouted in Cadence software using TSCM 180 nm CMOS technology. With an input voltage VIN = 4.5 V, the output battery voltage (VBAT) may range from 2.7 V to 4.2 V and the maximum charging battery current (IBAT) is 1.7 A. The peak efficiency reaches 97% and the total area is only 0.03mm2 .

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Li-Ion Battery Charger Based on LDO Regulator for Portable Device Power Management

Cited by 8 publications

References 9 publications

A Li-ion battery charger based on LDO regulator with pre-charge mode in 180 nm CMOS technology

A Li-ion battery charger based on LDO regulator with pre-charge mode in 180 nm CMOS technology

High efficiency multi power source control constant current/constant voltage charger lithium-ion battery based on the buck converter

A high efficiency and high speed charge of Li-Ion battery charger interface using switching-based technique in 180 nm CMOS technology

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