Microchip launches new power modules for AI data centres
Microchip has announced the availability of its new 3.3 kV HV‑D3 mSiC® Power Modules, designed to simplify and accelerate the adoption of solid-state transformers (SSTs) in AI hyperscale data centres and other high‑voltage power applications. The new modules integrate 3.3 kV silicon carbide (SiC) mSiC® MOSFETs and Schottky diodes in an industry‑standard 62 mm package, enabling efficient power delivery from the medium‑voltage grid directly to the server rack.
As AI data centres continue to scale, token generation is limited by power availability, while efficiency is a defining factor for return on investment. Traditional architectures based on bulky, low‑frequency transformers add complexity, increase losses and limit flexibility. Solid-state transformers represent a foundational shift in power delivery, reducing conversion stages and enabling higher system efficiency. The industry’s shift toward higher-voltage DC rack distribution in next-generation AI facilities further amplifies the value of SSTs, which are intended to deliver regulated DC directly from the medium-voltage grid with fewer conversion stages.
Microchip’s HV‑D3 mSiC modules are engineered specifically to meet these requirements. The modules use Microchip’s mSiC MOSFET technology, which offers highly competitive RDS(on) stability over temperature, with packaging that supports 6 kV isolation, incorporates CTI 600‑rated materials and features extended creepage distances, designed to allow safe series connection for high‑voltage operation. A silicon nitride (Si₃N₄) substrate delivers enhanced thermal conductivity and power‑cycling capability, helping designers achieve higher power density with less aggressive cooling.
The HV‑D3 mSiC power modules are available in half‑bridge and common‑source configurations, with and without anti‑parallel Schottky diodes, addressing applications in the 100-300A range. Microchip’s mSiC MOSFET technology, offers balanced switching losses for both hard‑switched and soft‑switched topologies, making the devices well suited for SST designs and other high‑frequency, high‑voltage systems.
While optimised for solid-state transformers in AI data centres, the HV‑D3 mSiC power modules also address a wide range of applications, including megawatt charging infrastructure for heavy‑duty vehicles, auxiliary power supplies for rail/heavy transportation, medium‑voltage motor drives, industrial and defence power systems. These markets benefit from the same combination of high isolation, thermal robustness, and efficient power conversion.
