UNDERSTANDING SIC MOSFETS IN FAST SWITCHING APPLICATIONS

UNDERSTANDING SIC MOSFETS IN FAST SWITCHING APPLICATIONS SiC MOSFET body diode reverse recovery The reverse recovery of SiC MOSFET body diodes differs du to its unique characteristics from that of Si pn-diodes. The output capacitance and the commutation stray inductance play a significant role in fast switching circuits. The turn-off transient of SiC MOSFET body diodes differs from that of Si pn-diodes in IGBT circuits due to their unique characteristics. The output capacitance has a larger, and the bipolar charge a smaller impact. However, this changes at elevated temperatures and high current densities. Moreover, in fast switching applications, the commutation loop stray inductance plays a significant role. The conventional definition to determine Erec and Qrr may give misleading results that do not represent the actual device properties. This talk discusses the unique characteristics and various influences on the body diode turn-off behavior. This whitepaper explains: The unique characteristics of SiC MOSFET body diodes, how body diode turn-off is influenced in fast switching applications, why the conventional definition to calculate Qrr and Erec may give largely misleading results, what comprises reverse recovery losses of SiC MOSFETs, and how the user can optimize the turn-off behavior in his application. First publication of the paper at PCIM Europe Digital Days 2021. The provider of this whitepaper Infineon Technologies AG Am Campeon 1 -15 85579 Neubiberg Deutschland Phone : +49 (0)8923422767 Fax : +49 (0)8923428482 Contact form   Download free whitepaper Registration Login Firstname Please fill out this field. Lastname Please fill out this field. Business E-mail Please enter a valid mailadress. Company Please fill out this field. Password Please fill out this field. Minimum of 8 characters Lower case letter Upper case letter Number/Special character Download With Free Account By clicking on „Download With Free Account“ I agree to the processing and use of my data according to the consent form (please expand for details) and accept the Terms of Use. For more information, please see our Privacy Policy. Unfold for details of your consent Declaration of consent It goes without saying that we treat your personal data responsibly. Where we collect personal data from you, we process the data in compliance with the relevant data protection regulations. More detailed information is available in our privacy policy. Consent to the use of data for advertising purposes I consent to the use of my email address to send editorial newsletters by Mesago Messe Frankfurt GmbH, Rotebühlstr. 83-85, 70178 Stuttgart, Germany including all of its affiliates within the meaning of Section 15 et seq. AktG (‘Mesago’). I have viewed lists of each group of affiliates here for the Mesago.The content of the newsletter covers the products and services of all of the companies listed above including, for example, trade magazines and specialist books, events and exhibitions and event-related products and services, printed and digital media products and services such as additional (editorial) newsletters, competitions, lead campaigns, online and offline market research, technical web portals and e-learning courses. If my personal telephone number has also been collected, it may be used to send offers for the aforementioned products and services from the above companies, as well as for market research purposes.If I wish to access protected content online on portals of Mesago including its affiliates within the meaning of Section 15 et seq. AktG, I must register with additional data in order to access that content. In return for this free access to editorial content, my data may be used in line with this declaration of consent for the purposes described herein. Right to withdraw consent I am aware that I can withdraw this consent at any time with future effect. My withdrawal of consent does not affect the lawfulness of processing performed based on my consent before its withdrawal. If I wish to withdraw my consent, I can send an email to Mesago at [email protected]. If I no longer wish to receive individual newsletters to which I have subscribed, I can also click on the unsubscribe link at the bottom of a newsletter. I can find more information on my right to withdraw, how to exercise this right and the consequences of my withdrawal in the Privacy policy Editorial newsletters section.

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