High Power Density

A central component of many electrified vehicles is the traction DCDC-converter. It’s task is to connect and convert energy between different energy storages, battery chargers (AC-chargers, fast DC-chargers), drive inverters and range extending sources. In modern car architecture, weight and volume are determinant factors. To take a look beyond state-of-the art, power electronic cores based on SiC and GaN can show the highest power densitys and lowest weight of dc-dc converters. These devices allow a high switching frequency of 200 kHz and in the same way a high efficiency of more than 98.5%. The high switching frequency has allowed a dramatic size reduction of passive components leading to a record-breaking power density of up to 143 kW / dm³


Typical challenges of High Power Density Prototypes:

    Low inductive commutation cell for fast switching

    Integrated power modules

    Extremely flat, small and high dV/dt driver

    Multi phase operation for reduced ripple current

    High performance ceramic highside capacitor

    Small, accurate and EMI-immune current sensing

    Low-volume, high energy power inductors

    Integrated and optimized water cooling




Bidirectional full SiC 200 kW DC-DC Converter


Cool Systems with SiC and GaN