Circuit protection with SiC FETs in dual-gate configuration White Paper

PublishTime：2021-11-12

WHITE PAPER: A great deal of research has been conducted into the benefits of solid-state circuit breakers, which fall broadly into the classes of hybrid breakers and completely solid-state breakers with no mechanical parts. This article focuses on solid-state circuit breakers. Table 1 presents an overview of the relative advantages and disadvantages of solid-state circuit breakers when compared to established electromechanical breakers and relays. The key benefit of solid-state breakers is known to be their ability to interrupt current on a nano/microsecond scale, rather than the milli-second scale needed with mechanical breakers. This becomes increasingly valuable when interrupting power sources with very low internal impedance, for e.g., EV batteries. They can also be used to interrupt DC circuits, without the need for elaborate arc prevention measures. The absence of moving parts and degradation of contacts allows many more cycles of fault prevention without the need for replacement in the field. However, solid-state circuit breakers do have higher resistance than mechanical contacts, making their cost/A significantly higher. As the voltage rating of the semiconductors increase, the resistance increases as the V2 or V2.5 for the same area of material used (for basic unipolar devices). This directly impacts the cost as the voltage class of the breaker increases.

Brand of Product：	UnitedSiC
Part#：
Product Category：	SiC FETs 、 SJ MOSFETs 、 GaN FETs 、 SiC MOSFETs 、 SiC-JFET More
Application：	More
Data Type：	White Paper More
Safety & Environment Standards：	More
Operating Temperature：	Please see the document for details
Qualification Grade：	More
Qualification Approval：	More
Package：	TO-247
Language：	English Chinese Chinese and English Japanese
Date of Creation：	October 2021
Version Number：
Data Encoding：
Data Size：	1.4 MB

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