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国际整流器公司推出全新 MTP 隔离式开关模块系列,专为大电流工业电源而设计,适用于高频弧焊机及不间断电源。它以氮化铝陶瓷层进行绝缘,在结点与外壳间发挥更佳导热性能。该绝缘层的热传导性(冷却能力)比用于同类器件的氧化铝基板高出7倍之多。新模块系列的额定电压为600 V 和1200 V,把高速 IGBT 和优化的二极管结合在同一封装内,有助于节省空间和降低组装成本,可取代分立式解决方案。在该系列器件中,50MT060ULS 是一款全绝缘低侧斩波模块,内含一个 IR 超快 IGBT 和一个具超软逆恢复电流特性的 HEXFRED 二极管;50MTOboWH 是一款全绝缘半桥式模式,双 IGBT 设计可有效控制功率耗散和电流分配。此外,IR 还提供两款1200 V MTP 开关模块:全绝缘的20 MT120 UF 全桥式及40 MT120 UH 半桥式模块。它们可直接连接到大多数三相系统的直流总线。
International Rectifier Inc. introduces a new family of MTP isolated switch modules designed for high current industrial power supplies for high frequency arc welders and uninterruptible power supplies. It is insulated with an aluminum nitride ceramic layer to give better thermal conductivity between the junction and the case. The thermal conductivity (cooling capacity) of this insulating layer is more than seven times higher than that of alumina substrates used for similar devices. The new module family, rated for 600 V and 1200 V, combines high-speed IGBTs and optimized diodes in the same package to help save space and reduce assembly costs, replacing discrete solutions. Among the devices in the series, the 50MT060ULS is a fully isolated low-side chopper module with an IR superfast IGBT and a HEXFRED diode with ultra-soft reverse recovery current capability; the 50MTOboWH is a fully-insulated half-bridge mode with dual IGBT design can effectively control the power dissipation and current distribution. IR also offers two 1200 V MTP switch modules: Fully insulated 20 MT120 UF full-bridge and 40 MT120 UH half-bridge modules. They connect directly to the DC bus of most three-phase systems.