On the Techniques to Utilize SiC Power Devices in High- and Very High-Frequency Power Converters

Autor: Zikang Tong, Lei Gu, Juan Rivas-Davila, Zhechi Ye, Kawin Surakitbovorn
Rok vydání: 2019
Předmět:
Zdroj: IEEE Transactions on Power Electronics. 34:12181-12192
ISSN: 1941-0107
0885-8993
Popis: In this paper, we explore the challenges of implementing resonant converters using silicon carbide (SiC) power devices at high frequency: namely, the issue of high parasitic inductance packages and the ability to drive and enhance the mosfet at these frequencies. Although power circuit designers have many alternative device technologies to choose from, such as silicon and gallium nitride materials, SiC devices have several advantageous attributes especially in high power applications. As a solution, we study the device performance and parasitics of SiC mosfet s in different packaging schemes. We further offer a solution to the challenges of driving SiC devices by demonstrating a multiresonant gate driver and use this scheme to drive an SiC mosfet at 30 MHz and a SiC JFET at 13.56 MHz in a class-E inverter, achieving 85.7 $\%$ drain efficiency for the mosfet and 93.8 $\%$ for the JFET.
Databáze: OpenAIRE