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

页码：596 / 603

页数：8