Peak Nano and Advanced Conversion partner on SiC DC-Link tech
US companies Peak Nano and Advanced Conversion have announced a partnership to co-develop next-generation DC-link capacitor solutions for high-voltage e-mobility applications, with an initial focus on Formula E and performance automotive, electric buses and heavy trucks, off-highway and industrial vehicles, and electrified aviation.
Their collaboration combines Peak Nano's NanoPlex LDF nanolayer capacitor film with Advanced Conversion's Power Ring DC-link integration platform, which delivers sub-5nH commutation loop inductance for fast-switching SiC modules.
The shift to 800V+ power architectures was supposed to unlock the next generation of EV performance, charging speed, and electrified aviation. Instead, engineers keep running into the same wall: DC-link capacitors that weren't designed for the high currents, thermal loads, switching speeds, and voltage stress that SiC MOSFETs demand.
The workarounds (derating capacitors, oversizing the DC link, adding cooling infrastructure) are expensive, weight restrictive, and space-consuming, and they undermine the efficiency gains SiC was designed to deliver.
"SiC has fundamentally changed what the DC link must deliver, and the industry has been working around legacy polypropylene limitations for too long. Engineers designing 800V+ inverter systems shouldn't have to derate, oversize, or add cooling just so their capacitors can keep up," said Edward Sawyer, CEO of Advanced Power Conversion Solutions.
"NanoPlex LDF also serves as a direct replacement for polyester-based films where the supply chain has become constrained — we're already seeing strong adoption across our customer base. Partnering with Peak Nano gives us the film technology to match the ambition of our Power Ring platform. Together, we're delivering a DC-link solution purpose-built for 800V SiC inverters and geometrically aligned to integrate directly with motor housings."
The partnership brings together two technologies purpose-built for the 800V+ shift. Peak Nano's patented NanoPlex LDF film design delivers thermal stability and voltage endurance that 800V+ SiC systems require, without the derating penalties that constrain biaxially oriented polypropylene (BOPP) based designs. Advanced Conversion's patented Power Ring platform provides ultra-low commutation loop inductance and superior thermal coupling, enabling fast-switching SiC modules to operate at their full potential in compact, high-heat environments.
Together, they claim to close a critical gap in high-voltage inverter design that neither company could address alone.
"NanoPlex LDF was built for exactly the environment that high-voltage SiC inverters create — high temperature, high frequency, high electrical stress, with no room for derating. Advanced Conversion's Power Ring architecture is the integration platform that can translate that film capability into a complete, optimized system," said Jim Welsh, CEO Of Peak Nano. "This partnership puts the right film and the right manufacturing platform together for the first time, and the products we are developing together will set a new benchmark for DC-link performance in e-mobility on land, sea, and air."
Engineering teams from both companies are developing joint products now, with initial releases slated for late 2026. This partnership is structured for long-term co-development across passenger EVs, commercial vehicles, off-highway platforms, electrified aviation, and DC fast-charging infrastructure.
