IGBT Efficiency Module

The principle of IGBT conduction is similar to MOSFET, which is driven by voltage. IGBT overcomes the shortcomings of MOSFET, and has the characteristics of high input impedance (in addition to resistance, inductance and capacitance also have the role of hinders current, called impedance) and low conduction voltage drop, small conduction loss in high voltage environment. IGBT is the core of motor drive, widely used with inverters, frequency converters, etc., in UPS (uninterruptible power supply), switching power supply, tram, AC motor and other fields. IGBT is generally applied in areas with a voltage of more than 600V, a current of more than 10A and a frequency of more than 1KHz. The inherent structure of IGBT leads to a large loss when it is used as a high frequency switch. The operating frequency of IGBT is usually 40-50khz. The switching and blocking of IGBT are controlled by voltage and can be double-guided. IGBT is widely used in a wide range of applications, ranging from household appliances and digital products to aerospace, high-speed rail and other fields, as well as emerging applications such as new energy vehicles and smart power grids. By voltage demand classification, igBTs for consumer electronics applications are usually below 600V, solar inverters need 1200V low-loss IGBTs, high-speed trains use between 1700V and 6500V igBTs, and smart grid applications are usually 3300V IGBTs.

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