LEM and Semikron Danfoss Introduce Current Sensing to Automotive Power Modules

LEM and Semikron Danfoss have joined forces to create a cutting-edge current sensor called 'Nano' specifically designed for monitoring current in automotive silicon carbide power MOSFET modules. This innovative sensor is compatible with Semikron's DCM SiC power modules, which have voltage ratings of 750 or 1,200V and current ratings ranging from 200 to 1,000A.

The concept behind the Nano current sensor was to develop a core-based sensor that could be conveniently placed in the unused space between the top side of the power module and the gate driver board. This unique design allows the footprint of the current sensor to overlap with that of the power module, eliminating the need for additional space in the inverter. Furthermore, no extra components are required to secure the sensor mechanically or establish an electrical connection to the driver board, simplifying the installation process.

Electronics Weekly has reached out to LEM for more technical details and images of the Nano current sensor. While awaiting a response, LEM has disclosed that DCM modules equipped with the sensor meet the IEC 60664-1 insulation requirements for 800V batteries, ensuring optimal safety and performance.

Benefits of the Nano Current Sensor

The collaboration between LEM and Semikron Danfoss has resulted in a current sensor that offers several advantages for automotive applications. Firstly, the Nano sensor's compact design allows it to fit seamlessly into the existing space within the power module, minimizing the need for additional components or modifications to the inverter. This not only saves valuable space but also simplifies the installation process, reducing both time and costs.

Secondly, the Nano current sensor provides accurate and reliable current monitoring, enabling precise control and protection of the power MOSFET modules. This is crucial for automotive applications, where efficient power management is essential for optimal performance and safety.

Lastly, the compatibility of the Nano sensor with Semikron's DCM SiC power modules ensures seamless integration and reliable operation. By leveraging the expertise of both LEM and Semikron Danfoss, the Nano current sensor offers automotive manufacturers a reliable and efficient solution for monitoring current in silicon carbide power MOSFET modules.

Future Developments and Applications

The collaboration between LEM and Semikron Danfoss represents a significant step forward in the development of current sensing technology for automotive applications. As the demand for electric vehicles and other high-power applications continues to grow, the need for accurate and efficient current monitoring becomes increasingly important.

With the successful introduction of the Nano current sensor, LEM and Semikron Danfoss are likely to explore further advancements in this field. By continuously improving the design and performance of the sensor, they aim to meet the evolving requirements of the automotive industry and contribute to the development of more efficient and reliable power electronics systems.

Overall, the collaboration between LEM and Semikron Danfoss has resulted in the creation of a groundbreaking current sensor that offers numerous benefits for automotive silicon carbide power MOSFET modules. The Nano sensor's compact design, accurate monitoring capabilities, and seamless integration make it an ideal solution for automotive manufacturers seeking to enhance the performance and safety of their power electronics systems.