SiC power board When considering cost efficiency such as unit price when using conductors, rather than simply comparing efficiency with silicon products, it is necessary to use products with guaranteed reliability and stability to be meaningful as premium products. It is judged to be so.

According to the ' CoolSiC™ White Paper - How Infineon Achieves and Qualifies Reliability of SiC Power Semiconductors ' published by Infineon , a thorough product qualification process is required to fully utilize the benefits of SiC.

According to the white paper2a01735723745d3f14" target="_blank">SiC power semiconductors have low switching loss and can perform high-speed switching, but there is a problem with gate malfunction due to high-speed switching. To solve this, a negative voltage is used at the gate terminal, and it was analyzed that as the negative voltage increases, there is a problem with reduced lifespan.

Accordingly, the selection of gate resistor is important, but if expensive resistors are selected to avoid these shortcomings, the unit price increases, resulting in economic loss, and the lack of reliability and stability makes it meaningless as a premium system using SiC power semiconductors .

In order to have value as a premium system that uses SiC power semiconductors and also secure economic feasibility,er/mosfet/silicon-carbide/?utm_source=e4ds&utm_medium=referral&utm_campaign=202202_ap_ko_ipc_ipc.p.sic&utm_content=article&utm_term=korea.sicwhitepaper#!?fileId=5546d46272e49d2a01735723745d3f14" target="_blank">It is essential to give priority to reliability and stability in the SiC power semiconductor itself.

Accordingly, SiC power semiconductor specialized companies are said to be operating a thorough verification process to eliminate many risks that customers may face in advance and to enable them to trust and safely utilize the technology.

first of all/www.infineon.com/cms/en/product/power/mosfet/silicon-carbide/?utm_source=e4ds&utm_medium=referral&utm_campaign=202202_ap_ko_ipc_ipc.p.sic&utm_content=article&utm_term=korea.sicwhitepaper#!?fileId=5546d46272e49d2a01735723745d3f14" target="_blank">In the case of Infineon, the threshold voltage was raised by more than 1V compared to the minimum standard of 3.5V, creating an environment where a small gate resistor can be used, which can have a great advantage in switching frequency and loss.

It was also reported that the device's suitability is verified through checks such as turn-off spike voltage and c*dv/dt, and the gate resistance is selected under precise conditions through double pulse testing, and switching loss is also measured to ensure that it can be linked to device damage or stability in terms of reliability.

In particular, according to Infineon , the withstand capacity in case of a short circuit is directly guaranteed in the datasheet.

urce=e4ds&utm_medium=referral&utm_campaign=202202_ap_ko_ipc_ipc.p.sic&utm_content=article&utm_term=korea.sicwhitepaper#!?fileId=5546d46272e49d2a01735723745d3f14" target="_blank">The white paper states that in order to fully utilize the benefits of SiC to increase efficiency and power density and reduce system cost, thorough technology development and product verification procedures must follow, and that careful consideration must be given to how the necessary development or reliability verification processes should be differentiated as there are significant differences in the properties and operating modes of the materials themselves.