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Silicon Carbide Chips How Bosch, Infineon, and ST Micro Are Competing for the Best Architecture

By Sven Prawitz | Translated by AI 8 min Reading Time

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FAULHABER Drive Systems

Eight years after silicon carbide semiconductors were first used in mass production, the market has undergone a realignment. The three largest suppliers of power semiconductors are relying on different SiC architectures.

From the boule (bottom) to the wafer to the chip (on top of the boule). Transistors are used as switches in power electronics.(Image: Bosch)
From the boule (bottom) to the wafer to the chip (on top of the boule). Transistors are used as switches in power electronics.
(Image: Bosch)

It was the Model 3 with which Tesla became the first automaker to introduce silicon carbide MOSFETs in 2018. According to Yole, ST Microelectronics supplied the SiC semiconductors. That model had a 400-volt electrical system, while the chips installed were designed as 650-volt components. The move set off a wave that swept through the entire supplier industry—Jens Baringhaus, Chief Expert at Bosch, looks back on it as the “first major wave.”

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