A novel transformer-less interleaved four-phase high step-down DC converter with low switch voltage stress

2014 ◽  
Author(s):  
Ching-Tasi Pan ◽  
Chen-Feng Chuang ◽  
Chia-Chi Chu ◽  
Hao-Chien Cheng
Keyword(s):  
Voltage Stress ◽  
Step Down ◽  
Switch Voltage

scholarly journals Improvement in Voltage Conversion Ratio of Ultrahigh Step-Down Converter

Energies ◽  
2019 ◽  
Vol 12 (20) ◽  
pp. 3896
Author(s):  
Kuo-Ing Hwu ◽  
Wen-Zhuang Jiang ◽  
Hsiang-Hao Tu
Keyword(s):  
Input Voltage ◽  
Conversion Ratio ◽  
Leakage Inductance ◽  
Zero Voltage Switching ◽  
Voltage Stress ◽  
Basic Operating ◽  
Step Down ◽  
Voltage Conversion ◽  
Zero Voltage ◽  
Switch Voltage

A modified step-down converter is presented herein, which is mainly based on one coupled inductor and several energy-transferring capacitors to improve the voltage conversion ratio as well as to reduce the switch voltage stress. In addition, the portion of the leakage inductance energy can be recycled to the input via the active clamp circuit during the turn-off period and the switches have zero-voltage switching (ZVS) during the turn-on transient. In this paper, the basic operating principles of the proposed converter are firstly described and analyzed, and its effectiveness is finally demonstrated by experiment based on a prototype with input voltage of 60 V, output voltage of 3.3 V and rated output power of 33 W.

scholarly journals A non‐isolated DC‐DC converter with low voltage stress and high step‐down voltage conversion ratio

2021 ◽  
Author(s):  
Stylianos P. Syrigos ◽  
Georgios C. Christidis ◽  
Theodoros P. Mouselinos ◽  
Emmanuel C. Tatakis
Keyword(s):  
Low Voltage ◽  
Conversion Ratio ◽  
Voltage Stress ◽  
Step Down ◽  
Voltage Conversion
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