A newly introduced high-voltage MOSFET platform promises to boost efficiency and power density across a range of data center, industrial and renewable power conversion systems.
A new 600 V Super Junction MOSFET platform by Alpha and Omega Semiconductor Limited (AOS) has emerged in the power electronics landscape, marking a clear step up for mid- to high-power conversion designs that demand both high efficiency and robust performance. The first device from this lineup, a 600 V MOSFET with a low on-resistance of 37 milliohms, is already in production and aimed at systems where efficiency, density and reliability are critical.
Designed to improve the core switching element in switched-mode power supplies (SMPS) and inverter systems, the platform targets applications such as server power supplies, telecom rectifiers, solar converters, motor drives and industrial power systems. Super Junction MOSFET technology, long favored in hard switching topologies like totem-pole PFC, LLC resonant converters and push-pull stages, underpins the design to deliver lower conduction and switching losses while enabling higher power density.
The key features are:
- 600 V Super Junction MOSFET with 37 mΩ maximum on-resistance
- Optimized for high-efficiency switching and low losses
- Rugged intrinsic body diode with reduced recovery stress
- Enhanced avalanche and short-circuit handling for reliability
- Suitable for totem-pole PFC, LLC and inverter topologies
What sets this MOSFET apart is its rugged intrinsic body diode and enhanced avalanche and short-circuit resilience characteristics essential in handling hard commutation events such as reverse recovery stress or startup transients. Testing indicates the device can withstand high di/dt stress at elevated junction temperatures, which translates into improved long-term reliability in demanding environments.
The platform’s first silicon, housed in a TOLL package, is offered in production quantities with a typical lead time and unit pricing aligned with high-volume power component standards. Early adopters in power supply and renewable energy converter design are expected to leverage the platform to reduce system level losses and potentially simplify thermal management.
Industry observers note that advances in MOSFET efficiency and ruggedness remain pivotal as energy conversion systems push toward higher power densities and stricter efficiency targets particularly in data centers and EV-charging infrastructure. This new platform aims to provide designers with a more capable silicon option without sacrificing cost-effectiveness.
