LEM, Semikron, and Danfoss Collaborate to Enhance Automotive Power Modules with Current Sensing Technology

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 main objective behind the development of the Nano concept was to design a core-based current 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 positioning 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 with the driver board, according to LEM.

Electronics Weekly has reached out to LEM for more technical details and images regarding the Nano current sensor. So far, the only additional information released by LEM is that DCM modules equipped with the sensor meet the IEC 60664-1 insulation requirements for 800V batteries.

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 available space within the power module, minimizing the need for additional components or modifications to the existing setup. This not only saves space but also simplifies the installation process.

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 utilizing the existing infrastructure and leveraging the expertise of both companies, the Nano current sensor offers a cost-effective solution without compromising on performance or reliability.

Future Implications

The development of the Nano current sensor marks a significant advancement in the field of automotive power electronics. As electric vehicles continue to gain popularity, the demand for efficient and reliable power management solutions will only increase. The collaboration between LEM and Semikron Danfoss sets a precedent for future partnerships and innovations in this domain.

With the Nano current sensor, automotive manufacturers can enhance the performance and safety of their vehicles by accurately monitoring and controlling the current in silicon carbide power MOSFET modules. This not only improves the overall efficiency of the vehicle but also contributes to a more sustainable and eco-friendly transportation ecosystem.