Peak Nano and Advanced Conversion Partner on DC-Link Capacitors for 800 V+ SiC EV Inverters

Why It Matters

The partnership delivers a higher‑efficiency, smaller and cooler DC‑link capacitor, removing a key barrier to broader adoption of high‑voltage SiC powertrains across transport sectors.

Key Takeaways

• NanoPlex LDF dissipation factor <0.0004 up to 150 °C
• Power Ring reduces commutation loop inductance dramatically
• Enables 800 V+ SiC inverters without derating or oversizing
• US‑based production supports domestic EV component supply chain
• Target launch late 2026 for automotive, bus, aviation markets

Pulse Analysis

Silicon‑carbide (SiC) inverters are reshaping electric‑vehicle powertrains by offering faster switching, higher efficiency, and reduced weight compared with traditional silicon IGBTs. However, the rapid voltage transitions generate intense dV/dt stresses that strain conventional DC‑link capacitors, especially those built from biaxially oriented polypropylene (BOPP) film. BOPP caps suffer from elevated dissipation factors and require derating or additional cooling, limiting the performance gains SiC devices promise. This technical gap has become a focal point for manufacturers seeking to unlock the full potential of 800 V+ architectures in cars, buses, and even aircraft.

The Peak Nano‑Advanced Conversion collaboration directly addresses these challenges. NanoPlex LDF film maintains a dissipation factor below 0.0004 even at 150 °C, dramatically cutting heat generation inside the capacitor. Coupled with the Power Ring’s ultra‑low inductance design, voltage overshoot during SiC switching is minimized, allowing inverter designers to avoid the bulky, oversized capacitor banks that have been the norm. The result is a more compact, thermally stable DC‑link that can sustain the high‑frequency pulses of modern SiC modules without sacrificing reliability or requiring extra cooling infrastructure.

Beyond the engineering advantages, the partnership strengthens the U.S. domestic supply chain for critical EV components. Advanced Conversion’s Florida‑based manufacturing ensures that the new capacitors can be sourced locally, reducing lead times and exposure to geopolitical disruptions. With product launches slated for late 2026, the solution is positioned for high‑performance automotive, electric‑bus, heavy‑truck, off‑highway, and emerging aviation applications such as electric aircraft and drones. By removing a longstanding bottleneck, the joint offering could accelerate SiC adoption, drive down system costs, and reinforce America’s leadership in next‑generation e‑mobility technology.