Infineon advanced testing H2S protection, extend the life of IGBT module

On July 9, 2020, Germany Munun News] Durability determines the service life and reliability of the module in harsh environments. Especially when exposed to hydrogen sulfide (H2S), the life of electronic components will be greatly affected. In order to cope with this threat, the British Flying Technology Co., Ltd. has developed a unique protection. The ECONOPACKTM + module using the TrenchStopTM IGBT4 chipset is a product in the ECONO family that is the first to have this new protection feature, which is suitable for inverter applications. Hydrogen sulfide achieves critical levels of harsh environments in paper, mining, wastewater, petrochemical processing, and rubber industry. Hydrogen sulfide is the most threatened corrosive contaminant for power semiconductors. The IGBT module temperature typically rises during operation, and the applied voltage and hydrogen sulfide contamination will react to form a copper sulfide (Cu2S) crystal. This conductive structure spreads in the coated trench on the ceramic substrate DCB, and the worst case is the short circuit. The IGBT module fails too early, which will cause a lot of the inverter's life. The advanced hydrogen sulfide protection function of Infineon is capable of preventing hydrogen sulfide into the module sensitive area. This method is not only unique, and the efficiency is also very high. At the same time, all of the electrical, thermal and mechanical parameters of the module have not changed, while still retaining the same properties as standard modules, which prolongs the life of the system running in harsh environments. In order to confirm this, Infineon designed a proprietary HV-H2S test according to the ISA71.04-2013 standard, to prove that the IGBT module can operate under certain conditions. This standard divided four levels from "mild (G1)" to "severe (GX)" according to the severity of pollution. Infineon's test covers a wide range of industrial applications, to assess the reliability of the IGBT module, provide a plurality of methods. Under the protection of the Sinocehyme hydrogen sulfide, the IGBT module did not show dendrite growth under HV-H2S specified test conditions, and therefore, according to ISA71.04 standard, in "G3 (severe)" level limit (≤2000 å / 50ppb) Under the conditions, the IGBT module is expected to use 20 years. ECONOPACK + with this protection function can easily replace standard modules without cost high and time-consuming design. In addition, with this feature, companies using inverter systems can save some additional protection measures, such as increasing air conditioners, temperature and humidity control in the installation area of the inverter or even sealant. The ECONOPACK + module with advanced hydrogen sulfide protection is now booked, with 300A and 450A of the voltage of 1200V to be 200A and 450A, and the voltage is 1,700A, and the two models of 300A and 500A are available. Samples of ECONOPIM2 and ECONOPIM3 are also available for ordering.