具有PWM控制和低开关应力的DC-DC零电压转换变换器

Proceedings of 1995 IEEE Applied Power Electronics Conference and Exposition - APEC'95 Pub Date : 1995-03-05 DOI:10.1109/APEC.1995.468997

H. Wei, A. Ioinovici

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引用次数: 24

摘要

提出了一种新型的DC-DC功率变换器，实现了所有有源和无源开关的软开关。它的基本结构是一个准谐振功率转换器，外加两个有源开关和四个二极管。谐振电容不是离散元件，mosfet的寄生电容起谐振电容的作用。所有开关都要承受与PWM硬开关相同水平的电压和电流应力。基于占空比控制的功率变换器具有高效率和大调节能力。在较宽的线路范围和负载范围内保持软开关状态。

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DC-DC zero-voltage-transition converter with PWM control and low stresses on switches

A new type of DC-DC power converter, which achieves soft-switching for all the active and passive switches, is presented. Its basic structure is that of a quasi-resonant power converter, with an additional two active switches and four diodes. The resonant capacitors are not discrete elements, the parasitic capacitances of the MOSFETs play the role of resonant capacitors. All switches are subjected to voltage and current stresses at the same level as those in their PWM hard-switching counterparts. The power converter exhibits high efficiency and large regulation capability, based on a duty-cycle control. The soft-switching condition is maintained for a wide line range and load range.<>

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来源期刊

Proceedings of 1995 IEEE Applied Power Electronics Conference and Exposition - APEC'95

CiteScore

3.20

自引率

0.00%

发文量