950V CoolMOS PFD7 Family with an Integrated Fast Body Diode to Address Industrial SMPS Applications

Published  October 31, 2022   0
CoolMOS PFD7 High-Voltage MOSFET Family

Infineon Technologies has developed a new CoolMOS PFD7 high-voltage MOSFET family that combines outstanding performance with state-of-the-art ease of use and features an integrated fast body diode ensuring a robust device and in turn reduced bill-of-material (BOM). Tailored to ultrahigh-power density and the highest efficiency designs, these new products are primarily addressing lighting systems, along with consumer and industrial SMPS applications. Moreover, these new products are suitable for flyback, PFC, and LLC/LCC designs, including half- or full-bridge configurations making commutation robust and reliable. 

This new family offers up to 55 percent lower on-resistance (R DS(on)) devices in various SMD and THD packages, like 450 mΩ in DPAK or 60 mΩ in TO247. This enables designers to use smaller packages and boost power density and board space savings at reduced BOM and production costs. A gate-source threshold voltage (V (GS),th) of 3 V and smallest V (GS),th variation of ±0.5 V, makes the new devices easy to design in and drive, leading to increased design freedom. Due to the low threshold voltage and tolerance, MOSFET linear mode operation is avoided while allowing lower driving voltage and reduced idle loss.

Key Features

  • Integrated ultra-fast body diode with BiC Qrr (reverse recovery charge)

  • Best-in-class FOM RDS(on) x Eoss; reduced Qg, Ciss and Coss

  • Best-in-class  RDS(on) in various packages like 450 mΩ in DPAK or 60 mΩ in TO-247

  • Best-in-class V(GS)th of 3 V and smallest V(GS)th variation of ±0.5 V

  • ESD protection up to class 2 (HBM)

  • Best-in-class quality and reliability

By integrating an ultra-fast body diode with ultra-low reverse recovery charge (Q rr), they offer hard commutation ruggedness and reliability. This makes it the most robust SJ MOSFET in this voltage class, enabling usage across all topologies in the targeted applications. These new products improve light- and full-load PFC efficiency by more than 0.2 percent while matching the performance with regards to LLC efficiency, contributing to a greener world.