• B. Jayant Baliga


Solid state devices began to displace vacuum tubes in the 1950s for various power control applications. Power devices are required for applications that operate over a broad spectrum of power levels and frequencies. In Fig. 1.1, the applications for power devices are shown as a function of operating frequency. High power systems, such as HVDC power distribution and locomotive drives, requiring the control of megawatts of power operate at relatively low frequencies. As the operating frequency increases, the power ratings decrease for the devices with typical microwave devices handling about 100 watts. Today, all of these applications are served by silicon devices.


Power Dissipation Schottky Contact Power Device Drift Region Buck Converter 
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Copyright information

© Springer Science+Business Media, LLC 2009

Authors and Affiliations

  1. 1.North Carolina State UniversityPower Semiconductor Research CenterRaleigh

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