Thursday, April 26, 2018
Publication Date: 12/1/2012
Archive >  December 2012 Issue >  New Products > 

Alpha and Omega Semiconductor: Appliance & Industrial Control
Controlling appliances and industrial machines.
Sunnyvale, CA — Alpha and Omega Semiconductor Limited (AOS) has released its first family of high efficiency 600V Insulated Gate Bipolar Transistors (IGBTs) in AlphaIGBT technology to address the growing need for energy-efficient devices targeting motor control and power conversion applications. The patent-pending AlphaIGBT proprietary technology combines a special cell and vertical device structure to offer best-in-class conduction — VCE(SAT) — versus switching loss (EOFF) trade-off and longer short-circuit capability.

The new device enables a wide operating frequency range to address a variety of applications such as white goods (air conditioners, refrigerators, washing machines), industrial equipment (general inverters, servo motors, sewing machines, welding machines, uninterruptible power supplies), as well as commercial type heating and solar inverters.

The new devices offer 2.5X lower turn-off switching loss (EOFF) and 2X higher short-circuit withstand time (SCWT) rating compared to the current leading competitive device with similar VCE(SAT) values. The ultra low gate-charge (Qg) makes the devices incredibly easy to drive. In addition, the low QGC/QGE ratio allows the devices to withstand higher dV/dt transients and prevents oscillation issues in bridge applications. Combined with the 5.6V VGE(TH), a feature that can be used as an advantage to extend the use of unipolar (0-15V) gate drives saving the expense and complexity of bipolar (-15/15V) gate drives.

The positive temperature coefficient of VCE(SAT) and low overall gate charge characteristics of this technology allow designers to easily parallel more devices and/or larger devices with existing drive circuits.

Contact: Alpha and Omega Semiconductor, 475 Oakmead Pkwy., Sunnyvale, CA 94085 408-830-9742 fax: 408-830-9749 E-mail: Web:

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