Adaptive off-time control for variable-frequency, soft-switched flyback converter at light loads

被引：76
|
作者：
Panov, Y [1 ]
Jovanovic, MM [1 ]
机构：
[1] Delta Prod Corp, Power Elect Lab, Res Triangle Pk, NC 27709 USA
来源：
IEEE TRANSACTIONS ON POWER ELECTRONICS | 2002年 / 17卷 / 04期
关键词：
adaptive control; flyback converter; soft switching; variable frequency;
D O I：
10.1109/TPEL.2002.800958
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：
The soft switching of a flyback converter can be achieved by operating the circuit in the critical conduction mode. However, the critical-mode operation at light loads cannot be maintained due to a very high switching frequency and the loss of the output voltage regulation. A control which regulates the output down to the zero load and maintains soft switching at light loads is proposed. The proposed control scheme was implemented in the 380-V/19-V, 65-W flyback dc/dc converter.
引用
收藏
页码：596 / 603
页数：8
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