Magnetic control of DC-DC resonant converters provides constant frequency operation

被引：21
|
作者：
Alonso, J. M. [1 ]
Perdigao, M. S. [2 ]
Gacio, D. [1 ]
Campa, L. [1 ]
Saraiva, E. S. [2 ]
机构：
[1] Univ Oviedo, Dept Elect Engn, Gijon 33204, Spain
[2] Univ Coimbra Pole II, DEE, Inst Telecomunicacoes, P-3030290 Coimbra, Portugal
来源：
ELECTRONICS LETTERS | 2010年 / 46卷 / 06期
关键词：
D O I：
10.1049/el.2010.0191
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
A solution to operate DC-DC resonant converters at constant frequency is proposed. A variable inductor is used to achieve output voltage control and regulation without changing the switching frequency of the converter. The output voltage characteristic of the parallel resonant converter operating under this so-called magnetic control is briefly analysed. A 48 V input, 5 V output, 500 kHz, 25 W prototype is presented to prove the feasibility of the proposed control method.
引用
收藏
页码：440 / U86
页数：2
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