Flyback Converter with Hybrid Clamp

被引：0

作者：

Huber, Laszlo ^{[1
]}

Jovanovic, Milan M. ^{[1
]}

Song, Haibin ^{[2
]}

Xu, Daofei ^{[2
]}

Zhang, Alpha ^{[2
]}

Chang, Chien-Chung ^{[3
]}

机构：

[1] Delta Prod Corp, Delta Power Elect Lab, Res Triangle Pk, NC 27709 USA

[2] Delta Elect Shanghai, Shanghai Design Ctr, Shanghai, Peoples R China

[3] Delta Elect Inc, Mobile Power Business Grp, Chungli, Taiwan

来源：

THIRTY-THIRD ANNUAL IEEE APPLIED POWER ELECTRONICS CONFERENCE AND EXPOSITION (APEC 2018) | 2018年

关键词：

RCD clamp; active clamp; hybrid clamp; flyback converter; power management; ACTIVE-CLAMP; POWER;

D O I：

暂无

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：

This paper presents a flyback converter with a hybrid clamp, i.e., a combined passive RCD and active clamp, and a corresponding power management circuit that substantially optimizes the performance of the flyback converter in the entire line and load ranges. By sensing the operating conditions, the power management circuit configures the clamp circuit either as a passive clamp or as an active clamp. In the passive-clamp configuration, the clamp switch is kept turned off and the main switch turns on with valley switching, whereas, in the active-clamp configuration, the clamp switch operates with pulse-width modulation (PWM) which enables zero-voltage-switching (ZVS) turn-on of the main switch. Performance of the flyback converter with the hybrid clamp is evaluated on a laboratory prototype of a 65-W (19.5-V, 3.33-A) universal-line-voltage-range (90-264 Vrms) adapter.

引用

页码：2098 / 2103

页数：6

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