An integrable base drive technology for very high current bipolar transistor switches

Conference Record of the 1990 IEEE Industry Applications Society Annual Meeting Pub Date : 1990-10-07 DOI:10.1109/IAS.1990.152405

G. van der Merwe, J. V. van Wyk, J. Schoeman

引用次数: 3

Abstract

A 600 W halfbridge push pull converter is presented that provides a constant voltage of 1.5 V and current of 400 A and operates at 100 kHz with an efficiency of between 55 and 60%. This is possible because of the application of the concept of matrix transformers and because of the operation at higher frequencies. It is shown that matrix transformers have major advantages in the area of integrability of high-current low-voltage supplies, with many advantages, such as distributed heat dissipation reducing the chances of thermal runaway. High frequency switching decreases electromagnetic component size and reduces weight and volume. Experimental results show that the major losses of the converter were due to the rectifying diodes and that the maximum achievable efficiency was 65%.<>

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用于大电流双极晶体管开关的可积基驱动技术

提出了一种600w的半桥推挽变换器，其恒电压为1.5 V，电流为400a，工作频率为100khz，效率为55% ~ 60%。这是可能的，因为矩阵变压器的概念的应用，因为在更高的频率操作。结果表明，矩阵变压器在大电流低压电源的可集成性方面具有很大的优势，具有分布式散热减少热失控的机会等诸多优点。高频开关减小了电磁元件的尺寸，减轻了重量和体积。实验结果表明，该变换器的主要损耗是由整流二极管造成的，最大效率可达65%。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Conference Record of the 1990 IEEE Industry Applications Society Annual Meeting

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