Hybrid switched-capacitor quadratic boost converters with very high DC gain and low voltage stress on their semiconductor devices

2016 ◽  
Author(s):  
Manxin Chen ◽  
Kerui Li ◽  
Jiefeng Hu ◽  
Adrian Ioinovici
Keyword(s):  
Low Voltage ◽  
Semiconductor Devices ◽  
Switched Capacitor ◽  
Boost Converters ◽  
Dc Gain ◽  
Voltage Stress ◽  
Very High

TRANSFORMERLESS DC–DC CONVERTERS WITH A VERY HIGH DC LINE-TO-LOAD VOLTAGE RATIO

2004 ◽  
Vol 13 (03) ◽  
pp. 467-475 ◽  
Author(s):  
B. AXELROD ◽  
Y. BERKOVICH ◽  
A. IOINOVICI
Keyword(s):  
Boost Converter ◽  
Switched Capacitor ◽  
The Novel ◽  
Boost Converters ◽  
Voltage Ratio ◽  
High Voltage Gain ◽  
Dc Gain ◽  
Dc Line ◽  
Output Capacitor ◽  
Output Filter

By splitting the output capacitor of a basic boost converter, and combining the resulting capacitors with the main switch in the form of a switched-capacitor circuit, a new step-up structure is realized. Without using a transformer, a high line-to-load DC voltage ratio is obtained. An output filter is added, as usual, in boost converters for getting a free-ripple output. The circuit compares favorably with a quadratic boost converter regarding the count of devices and efficiency, even if it presents a lower DC gain. A DC analysis of the novel converter is presented. Experimental and simulation results confirm the theoretical expectations. By increasing the number of capacitors in the switched-capacitor circuit, higher gains can be obtained. Versatility, high voltage gain and good transient response are the features of the proposed converter.

scholarly journals High-Gain Switched-Capacitor DC-DC Converter with Low Count of Switches and Low Voltage Stress of Switches

IEEE Access ◽  
2021 ◽  
pp. 1-1
Author(s):  
Robert Stala ◽  
Maciej Chojowski ◽  
Zbigniew Waradzyn ◽  
Andrzej Mondzik ◽  
Szymon Folmer ◽  
...  
Keyword(s):  
Low Voltage ◽  
High Gain ◽  
Switched Capacitor ◽  
Voltage Stress

scholarly journals Transformer-Less Switched-Capacitor Quasi-Switched Boost DC-DC Converter

Energies ◽  
2021 ◽  
Vol 14 (20) ◽  
pp. 6591
Author(s):  
Truong-Duy Duong ◽  
Minh-Khai Nguyen ◽  
Tan-Tai Tran ◽  
Young-Cheol Lim ◽  
Joon-Ho Choi
Keyword(s):  
Steady State ◽  
Simple Structure ◽  
Low Voltage ◽  
Input Voltage ◽  
Voltage Source ◽  
Switched Capacitor ◽  
Steady State Analysis ◽  
Voltage Stress ◽  
In Series ◽  
Current Ripple

In this article, a quasi-switched boost converter based on the switched-capacitor technique with high step-up voltage capability is dealt with and analyzed. The proposed converter offers a simple structure and low voltage stress on the semiconductor elements with intrinsic small duty cycle. An inductor of the proposed converter is connected in series with the input voltage source; therefore, continuous input current ripple is attainable. In addition, the efficiency of the proposed converter is also improved. A detailed steady-state analysis is discussed to identify the salient features of the switched-capacitor-based quasi-switched boost DC-DC converter. The performance of the converter is compared against similar existing high boost DC-DC converters. Finally, the switched-capacitor-based quasi-switched boost DC-DC converter is investigated by experimental verification.

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