Diotec Semiconductor IGBTs for Inverters

Diotec Semiconductor insulated-gate bipolar transistors (IGBTs) leverage thin wafer technology to achieve both low saturation voltage and fast switching, thereby minimizing power loss in power conversion systems. Diotec Insulated Gate Bipolar Transistor (IGBT) is a device that merges the high input impedance and high switching speed of a MOSFET with the high conductivity characteristics (low saturation voltage) of a bipolar transistor.

Diotec Semiconductor offers a broad variety of IGBT products for Inverters. These IGBTs cater to a wide range of applications in electronics, traction, energy transmission, and both industrial and consumer systems. Inverter systems with resonant circuits are widely used in household cooking appliances such as IH rice cookers, tabletop IH cookers, and inverter microwave ovens. These inverter systems are generally classified into voltage-resonant circuits, where a heating coil and a capacitor are connected in parallel, and current-resonant circuits, where they are connected in series. IGBTs are commonly used as switching devices in both types of applications.

An IGBT is a bipolar device that utilizes both electrons and holes, resulting from a complex structure featuring a MOSFET input and a bipolar output. This configuration allows IGBTs to achieve low saturation voltage (similar to low ON resistance MOSFETs) and relatively fast switching characteristics. However, while IGBTs have relatively fast switching, they are still slower compared to power MOSFETs, which is a notable drawback.

The primary advantage of IGBT transistors is that they combine the high voltage and current handling capabilities of bipolar transistors with the high-speed switching and low gate current performance of power MOSFETs.

IGBTs are also known by several other names, including insulated gate transistor (IGT), insulated gate rectifier (IGR), conductivity modulated field effect transistor (COMFET), gain enhanced MOSFET (GEMFET), bipolar FET (BiFET), and injector FET.

With a diverse technology portfolio, industrial and power control IGBTs are designed for superior current capability and higher pulse load capacity, ensuring ultra-low power consumption. The IGBT, short for Insulated Gate Bipolar Transistor, combines the characteristics of a conventional Bipolar Junction Transistor (BJT) and a Field Effect Transistor (MOSFET), making it an ideal semiconductor switching device.

Diotec Applications:

IGBTs for Inverters: Diotec's IGBT series for inverters is recommended for frequencies of 1kHz to 50kHz, making them ideal for universal power supplies (UPS), motor control, solar power generation, and welding applications.

IGBTs for Power Factor Correction (PFC): Diotec' IGBT devices for power factor correction are suitable for frequencies of 50Hz to 100kHz and are perfect for UPS, solar power generation, and welding applications.