Ultra-compact DFN8x8 packaged 650V SiC MOSFETs from Toshiba enhance power density and efficiency in industrial equipment

20th May 2025

Toshiba Electronics Europe GmbH (“Toshiba”) announces volume shipments of its 3rd generation, 650V silicon carbide (SiC) MOSFETs in the compact DFN8x8 package for industrial equipment, the TW031V65C, TW054V65C, TW092V65C, and TW123V65C. An important characteristic of Toshiba’s next-generation process is the consistently low drain-source on-resistance (R_DS(ON)) temperature coefficient of the devices. The low R_DS(ON) x gate-drain charge (Q_gd) figure of merit (FoM), therefore, enables engineers to enhance the power density and efficiency of numerous high-voltage applications, including switched-mode power supplies (SMPSs), electric vehicle (EV) charging stations, uninterruptible power supplies (UPS), and photovoltaic (PV) inverters.

The surface-mount DFN8x8 package reduces volume by more than 90% compared to existing lead-inserted packages, such as TO-247 and TO-247-4L(X), improving the power density of equipment while enabling automated assembly. Surface mounting also reduces parasitic impedance, thereby cutting switching losses and contributing to the low FoM, which improves efficiency. With less heat needing to be dissipated, high-voltage power system designs can be simpler and more compact, making them suitable for space-constrained applications or furthering miniaturisation.

Furthermore, the multi-pin device allows a Kelvin connection of its signal-source pin for the gate drive. This capability reduces the inductance influence in the source wire within the package, enabling high-speed switching performance. As a result, under specific test conditions (V_DD=400V, V_GG=+18/0V, I_D=20A, R_G =4.7Ω, L=100µH), one of the new products, the TW054V65C, reduces turn-on loss by approximately 55% and turn-off loss by approximately 25% compared to existing Toshiba products, thereby helping to reduce power loss in equipment.

Toshiba will continue to expand its lineup to meet market trends and contribute to improving equipment efficiency and increasing power capacity.