Soitec partners with ZenSemi to scale power chips for AI and EVs
In brief
- Soitec and ZenSemi collaborate on 300mm BCD-on-SOI substrate production for power chips
- Target markets include AI datacenters, electric vehicles, humanoid robots, and industrial systems
- Soitec holds over 4,800 patents in engineered substrate technology
- Partnership enables production scaling without foundry capital expenditure
The Technology Behind the Deal
BCD-on-SOI technology enables chips that can handle high voltages, analog signals, and digital logic all on the same piece of silicon, with the added benefit of SOI's inherent energy efficiency. BCD stands for Bipolar-CMOS-DMOS—a process combining three different transistor types onto a single chip. SOI, or Silicon-on-Insulator, is Soitec's engineered substrate technique that adds an insulating layer to reduce power leakage and boost performance.
The 300mm wafer size matters because it's the industry standard for high-volume manufacturing. Bigger wafers mean more chips per production run and lower costs per unit. This scale is critical for meeting demand in power-hungry applications like AI datacenters and electric vehicle powertrains.
Soitec's Strategic Shift
Soitec will supply its 300mm Power-SOI substrates to ZenSemi, which will use them to develop new manufacturing processes and expand production capacity. The company has been positioning itself as more than just a smartphone chip substrate supplier for several years now. This partnership accelerates that diversification into power electronics—a market segment with substantial growth potential.
Soitec brings serious intellectual property to this arrangement. The company holds over 4,800 active patents, most related to engineered substrate technologies. As a materials supplier, Soitec doesn't bear the enormous capital expenditure burden of building and operating fabrication facilities. That advantage lets the company scale production partnerships without the infrastructure costs that foundries like ZenSemi must absorb.
Market Implications
Target applications include AI datacenters, electric vehicles, humanoid robots, and industrial systems. These are exactly the sectors driving semiconductor demand in 2025 and beyond. The partnership bolsters ZenSemi's process development efforts and elevates its production capacities, positioning the Chinese foundry as a serious contender in the global power chip market.
