Analysis and Application of the Infineon IKW40N65ET7 650V 40A TRENCHSTOP™ 7 IGBT
The Infineon IKW40N65ET7 is a high-performance Insulated Gate Bipolar Transistor (IGBT) belonging to the advanced TRENCHSTOP™ 7 technology family. Designed for robust switching operations, this device combines high efficiency with exceptional reliability, making it a preferred choice for power electronic applications requiring high power density and thermal stability.
A key feature of this IGBT is its optimized trench cell structure, which significantly reduces saturation voltage (VCE(sat)) and minimizes switching losses. With a voltage rating of 650V and a continuous current capability of 40A, it is well-suited for systems operating under high-stress conditions. The device also exhibits a tight parameter distribution, enhancing consistency in mass production and system performance.
The low turn-off losses and soft switching behavior of the IKW40N65ET7 contribute to improved electromagnetic compatibility (EMC) and reduced heat generation. Its positive temperature coefficient allows for easier parallelization in high-current applications, providing designers with flexibility in scaling power output.
Typical applications include:
- Switched-Mode Power Supplies (SMPS) and UPS systems
- Solar inverters and energy storage solutions
- Industrial motor drives and welding equipment

- Electric vehicle charging systems
The module is offered in a TO-247 package, ensuring effective heat dissipation and mechanical durability. Its integrated reverse diode offers additional protection and design simplification.
ICGOOODFIND: The Infineon IKW40N65ET7 exemplifies modern IGBT innovation, delivering high efficiency, thermal robustness, and design flexibility for next-generation power systems.
Keywords:
TRENCHSTOP™ 7 Technology
Low Switching Losses
650V Voltage Rating
High Power Density
Thermal Stability
