High-Performance Power Conversion with onsemi FDMS86520 PowerTrench® MOSFET
In the rapidly advancing field of power electronics, efficiency, thermal performance, and power density are critical design parameters. The onsemi FDMS86520 PowerTrench® MOSFET stands out as a premier solution engineered to meet these demanding requirements in high-frequency switch-mode power supplies (SMPS), DC-DC converters, and motor control applications.
This MOSFET leverages onsemi's advanced PowerTrench® technology, which is specifically designed to minimize key loss mechanisms. A standout feature is its exceptionally low figure-of-merit (FOM), achieved by optimizing the trade-off between gate charge (Qg) and on-resistance (RDS(on)). The FDMS86520 offers a very low RDS(on) of just 2.6 mΩ maximum at 10 V, coupled with a total gate charge of only 78 nC. This superior combination directly translates to significantly reduced switching and conduction losses, enabling higher efficiency and allowing systems to operate at elevated switching frequencies.
The benefits of operating at higher frequencies are substantial. Designers can utilize smaller, lighter, and more cost-effective passive components like inductors and capacitors. This is crucial for achieving greater power density—packing more power into a smaller physical footprint—a key objective in modern applications from enterprise computing to renewable energy systems.
Thermal management is another area where the FDMS86520 excels. Housed in a compact 8 x 8 mm PolarPak® package, it features an exposed top surface that facilitates direct attachment to an external heatsink. This innovative packaging solution dramatically improves heat dissipation compared to traditional packages, leading to lower operating temperatures and enhanced long-term reliability. The package also offers a creepage and clearance distance of more than 2.2 mm, simplifying design for safety-critical applications.
Furthermore, the device boasts excellent ruggedness and avalanche energy rating, ensuring robust performance in harsh electrical environments and protecting against voltage transients. Its broad operating voltage (VDS = 60 V) makes it an ideal choice for popular intermediate bus voltages like 48 V and 12 V systems.
ICGOODFIND: The onsemi FDMS86520 is a high-performance MOSFET that sets a new benchmark for efficiency and thermal management in power conversion. Its optimized FOM, innovative PolarPak® packaging, and rugged design make it an exceptional choice for engineers aiming to push the limits of power density and reliability in their next-generation designs.
Keywords: PowerTrench® MOSFET, Low RDS(on), High Power Density, PolarPak® Package, High-Efficiency Conversion
