scholarly journals Development of 50kW High Efficiency Fast Charger with Wide Charging Voltage Range

2016 ◽  
Vol 21 (3) ◽  
pp. 267-274 ◽  
Author(s):  
Jun-Sung Park ◽  
Min-Jae Kim ◽  
Heon-Soo Jeong ◽  
Joo-Ha Kim ◽  
Se-Wan Choi
Keyword(s):  
High Efficiency ◽  
Voltage Range

scholarly journals High Efficiency Buck-Boost Converter with Three Modes Selection for HV Applications using 0.18 μm Technology

2020 ◽  
Vol 18 (2) ◽  
pp. 137-144
Author(s):  
Fouad Farah ◽  
Mustapha El Alaoui ◽  
Abdelali El Boutahiri ◽  
Mounir Ouremchi ◽  
Karim El Khadiri ◽  
...  
Keyword(s):  
Power Conversion Efficiency ◽  
Conversion Efficiency ◽  
Output Voltage ◽  
High Efficiency ◽  
Power Conversion ◽  
Boost Converter ◽  
Current Control ◽  
Voltage Range ◽  
Operating Modes ◽  
Soft Start

In this paper, we aim to make a detailed study on the evaluation and the characteristics of the non-inverting buck–boost converter. In order to improve the behaviour of the buck-boost converter for the three operating modes, we propose an architecture based on peak current-control. Using a three modes selection circuit and a soft start circuit, this converter is able to expand the power conversion efficiency and reduce inrush current at the feedback loop. The proposed converter is designed to operate with a variable output voltage. In addition, we use LDMOS transistors with low on-resistance, which are adequate for HV applications. The obtained results show that the proposed buck-boost converter perform perfectly compared to others architecture and it is successfully implemented using 0.18 μm CMOS TSMC technology, with an output voltage regulated to 12V and input voltage range of 4-20 V. The power conversion efficiency for the three operating modes buck, boost and buck-boost are 97.6%, 96.3% and 95.5% respectively at load current of 4A.

A Modified High-Efficiency LLC Converter With Two Transformers for Wide Input-Voltage Range Applications

2013 ◽  
Vol 28 (4) ◽  
pp. 1946-1960 ◽  
Author(s):  
Haibing Hu ◽  
Xiang Fang ◽  
Frank Chen ◽  
Z. John Shen ◽  
Issa Batarseh
Keyword(s):  
High Efficiency ◽  
Input Voltage ◽  
Voltage Range
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