A passive lossless snubber cell for nonisolated PWM DC/DC converters

被引：67

作者：

Tseng, CJ

Chen, CL

机构：

[1] Power Electronics Laboratory, Department of Electrical Engineering, National Taiwan University, Taipei

来源：

IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS | 1998年 / 45卷 / 04期

关键词：

converters; pulsewidth modulation; switching circuits;

D O I：

10.1109/41.704887

中图分类号：

TP [自动化技术、计算机技术];

学科分类号：

0812 ;

摘要：

A passive lossless snubber cell is proposed to improve the turn-on and turnoff transients of the MOSFET's in nonisolated pulsewidth modulated (PWM) dc/dc converters, Switching losses and EMI noise are reduced by restricting di/dt of the reverse-recovery current and dv/dt of the drain-source voltage. The MOSFET operates at zero-voltage-switching (ZVS) turnoff and near zero-current-switching (ZCS) turn-on. The freewheeling diode is also commutated under ZVS, As an example, operation principles, theoretical analysis, relevant equations, and experimental results of a boost converter equipped with the proposed snubber cell are presented in detail. Efficiency of 96% has also been measured in the experimental results reported for a 1-kW 100-kHz prototype in the laboratory, Six basic nonisolated PWM dc/dc converters (buck, boost, buck-boost, Cuk, Sepic, and Zeta) equipped with the proposed general snubber cells are also shown in this paper.

引用

页码：593 / 601

页数：9

共 14 条

[1]

CARLI G, 1992, P INTELEC 92, P524

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