Infineon Launches World's Thinnest Silicon Power Wafer, Deliveries to First Customers Completed

On October 29, Infineon announced the release of the world's thinnest silicon power wafer, becoming the first company to master 20μm ultra-thin power semiconductor wafer processing technology.

This wafer, with a diameter of 30mm and a thickness of just 20μm—one-quarter the thickness of a human hair—is half the thickness of the current leading 40-60μm wafers. The technology has been validated and is already being applied in Infineon's integrated intelligent power stages (DC-DC converters), with the first batch delivered to customers.

Infineon states that this innovation will significantly enhance energy efficiency, power density, and reliability in power conversion solutions, making it suitable for AI data centers as well as consumer electronics, motor control, and computing applications.

Specifically, compared to solutions based on conventional silicon wafers, the halving of wafer thickness reduces substrate resistance by 50%, which results in over 15% reduction in power losses within power systems. For high-end AI server applications, where increased current drives up energy requirements, reducing the processor voltage from 230V to below 1.8V is particularly crucial for power conversion. The ultra-thin wafer technology greatly enhances vertical power transfer designs based on trench MOSFET technology, enabling close integration with AI chips to improve overall efficiency while minimizing power loss.

Recently, Infineon also announced the launch of the world's first 300mm Gallium Nitride (GaN) power semiconductor wafer and the completion of the world’s largest 200mm Silicon Carbide (SiC) power semiconductor wafer factory in Kulim, Malaysia. These efforts reflect Infineon's commitment to expanding its presence in the power semiconductor market.

Adam White, President of Infineon’s Power and Sensor Systems Division, noted that energy efficiency is becoming increasingly important as energy demand from AI data centers grows. This development provides a major opportunity for Infineon, which expects its AI-related business to reach €1 billion in revenue over the next two years, supported by double-digit growth rates.