Infineon extends collaboration with SolarEdge Technologies

Germany’s Infineon Technologies and Israel-based smart energy company SolarEdge Technologies have announced an extension of their collaboration to advance solid-state circuit breaker (SSCB) technology for high-voltage DC distribution in AI and hyperscale data centers.  

SolarEdge is leading the design of the SSCB solution, with Infineon providing its silicon carbide (SiC) JFET technology at the core of the protection devices.

Solid-state circuit breakers are designed to interrupt faults within a few microseconds, with no mechanical contacts to separate, while Infineon’s CoolSiC JFET devices deliver efficient operation and superior robustness, according to a press release.

The collaboration builds directly on SolarEdge's SST platform with Infineon SiC components, first announced in November 2025. The SST is designed to enable direct medium-voltage (13.8-34.5 kV) to 800-1500 VDC conversion at over 99 percent efficiency, collapsing multiple conversion stages into a single solution while reducing physical footprint. 

“High-density AI infrastructure at 800 VDC demands uncompromising efficiency and protection,” said Shuki Nir, Chief Executive Officer of SolarEdge. “Solid-state protection will enable operators to achieve both, delivering ultra-fast and dependable fault isolation without sacrificing conversion performance. Infineon’s silicon carbide technology is what makes it practical at scale.”

“Today’s data infrastructures have become more vulnerable to electrical faults, thereby driving the demand for smarter, faster and more robust power distribution systems,” said Andreas Weisl, Executive Vice President and Chief Sales Officer of Industrial & Infrastructure at Infineon. “By combining our advanced silicon carbide JFET technology with SolarEdge’s expertise in final power distribution, we are addressing these demands to ensure fast, safe and reliable operations in AI data centers.”