August 25, 2025 /SemiMedia/ — TDK Corporation has broadened its EPCOS InsuGate series of SMT gate drive transformers, introducing variants rated for DC working voltages up to 1000 V (ordering code B78541A25). The new components are designed to meet IEC 61558-1/2-16 insulation standards and enable more compact driver designs for full-bridge inverter modules used in electric vehicles and industrial systems.

Featuring a triple-insulated winding structure on a MnZn ferrite core with optimized coil design, the transformers deliver reliable galvanic isolation at high switching frequencies without compromising PCB space. Measuring only 13.85 x 10.5 x 9.2 mm, the devices reduce board area by about 30% compared with conventional designs. With a nominal inductance of 75 µH, a coupling capacitance of just 4 pF, and stable performance up to +150 °C, they are tailored for fast-switching IGBT and SiC devices.

The series is qualified to AEC-Q200 Rev. E and has passed vibration testing per AQG 324, confirming durability for powertrain-mounted automotive modules. With a partial discharge extinction voltage of ≥1.2 kV, reinforced insulation capability at 300 V (AC), and high-voltage test performance at 3 kV (AC) for 60 seconds, the components address strict reliability demands in next-generation power electronics.

TDK highlighted that the InsuGate transformers are aimed at switch-mode power supplies, isolated DC-DC converters, and galvanically isolated driver circuits for IGBT and SiC semiconductors, providing a robust solution for the electrification and AI-driven evolution of the semiconductor industry.

For more information, please visit www.tdk-electronics.tdk.com/en/transformers_igbt_fet.