Series-Capacitor Buck Converter with Soft Turn-On

被引：0
|
作者：
Tu, Cong [1 ]
Ngo, Khai [1 ]
Chen, Rengang [2 ]
机构：
[1] Virghinia Polytech Inst & State Univ, Ctr Power Elect Syst CPES, Blacksburg, VA 24061 USA
[2] Texas Instruments Inc, Multichannel Syst Prod Line, Bethlehem, PA USA
来源：
2020 THIRTY-FIFTH ANNUAL IEEE APPLIED POWER ELECTRONICS CONFERENCE AND EXPOSITION (APEC 2020) | 2020年
关键词：
Resonant converter; series-capacitor buck converter; zero-voltage switching (ZVS); zero-current switching (ZCS);
D O I：
10.1109/apec39645.2020.9124361
中图分类号：
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号：
0807 ; 0820 ;
摘要：
The Series-Capacitor Buck (SCB) converter lowers the switching loss, doubles the duty ratio, and equalizes the current between two phases. A Resonant Series-Capacitor Buck (RSCB) converter is realized by adding a parallel resonant tank next to the series-capacitor C-s. All switches turn on into zero-voltage (ZVOn) and the low-side switches turn off from zero-current (ZCOff). The voltage gain is still linearly proportional to the off-time of the low-side switches. The resonant tank generates additional loss and increases the voltage stress of the low-side switches. A 2-MHz prototype with a full load efficiency of 97.3%, 48 V at the input, and 7 V, 20 A at the output, was built to verify the design.
引用
收藏
页码：41 / 47
页数：7
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