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外文翻译富士IGBT模块应用手册.docx

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外文翻译富士IGBT模块应用手册.docx

上传人:annimy 2022/4/20 文件大小:30 KB

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外文翻译富士IGBT模块应用手册.docx

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文档介绍:外文翻译富士IGBT模块应用手册
外文翻译富士IGBT模块应用手册
外文翻译富士IGBT模块应用手册
附录A
Fuji IGBT Modules Application Manual
Power converters, such nals in the same way as a power MOSFET. 
Like the power MOSFET, a positive voltage between the gate and the emitter produces a current flow through the IGBT, switching it on。 When the IGBT is on, positive carriers are injected from the p+-layer on the drain side into the n—type bases layer, thereby precipitating conductivity modulation。 This
外文翻译富士IGBT模块应用手册
外文翻译富士IGBT模块应用手册
外文翻译富士IGBT模块应用手册
enables the IGBT to achieve a much lower on—resistance than a power MOSFET。
The IGBT has a very low on resistance for the following reasons:A power MOSFET becomes a single—layer semiconductor (n—type in the diagram) when it is in the on-state, and has resistor characteristics between the drain and the source. The higher the breakdown voltage and the device, the thicker the n-layer has to be, but this results in an increased drain-to—source resistance。 Thus, as the breakdown voltage increases so does the on-resistance,making it difficult to develop large capacity power MOSFETs。
Unlike the power MOSFET, the n—base layer resistance of the IGBT becomes negligible due to the effect of the pn diode formed by the junction of the added p+-layer and n-type base layer when viewed from the drain side。 As the ideal equivalent circuit in Fig. 1-2 shows, the IGBT is a monolithic