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IGBT |
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IGBT (Insulated Gate Bipolar Transistor) A power transistor that has characteristics of both MOSFET and bipolar junction transistors (BJTs). Introduced in the 1980s, the IGBT handles high current, a characteristic of BJTs, but enables fast switching with greater ease of control. IGBTs are found in home appliances, electric cars and digital stereo power amplifiers. Modules with multiple IGBTs can support very high voltage and amperage.Non Punch-Through (NPT) and Punch-Through (PT) When an IGBT is turned off, it exhibits a "tail current" because holes are left in the drift region. By adding an extra N+ buffer layer in what is known as a "Punch-Through" (PT) architecture, the trapped holes are quickly absorbed. Thus, the PT IGBT switches faster, but typically handles less voltage than the NPT IGBT. See power MOSFET.
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No references found | The UPS features an active IGBT rectifier to control the input power factor and an advanced battery-management element to increase battery life, and can be connected to a 24/7 remote-monitoring system. AISiC (aluminum silicon carbide) is a metal matrix composite suited as a thermal management material for IGBT base plates. By controlling the IGBT power devices using SVM instead of the more usual carrier based pulse width modulation (PWM), users can run servo motors at typically 15% higher speeds with reduced switching losses and harmonics, which can translate directly into greater machine throughput. |
IGBT |
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