3.3kV SiC modules target trains
Infineon Technologies has launched two 3.3kV silicon carbide (SiC) modules for powering the traction motors in electrics trains.
The FF2000UXTR33T2M1 and the FF2600UXTR33T2M1 modules use newly developed 3.3 kV CoolSiC MOSFETs and Infineon’s .XT interconnection technology. The modules come in XHP2 package and have been specifically tailored for traction applications.
Power modules for traction drives require packaging that allow fast switching, along with interconnection technologies that enable a long service life time. The CoolSiC MOSFET chips with integrated body diodes in the XHP2 packaging enable low switching losses while maintaining high reliability and power density.
The XHP2 packaging also features low stray inductance, a symmetrical and scalable design, and high current carrying capability. The FF2000UXTR33T2M1 module offers a drain-source-on-state resistance of 2.0 mΩ, while the FF2600UXTR33T2M1 features a drain-source-on-state resistance of 2.6 mΩ. Despite the demanding operating profiles of trains, the .XT interconnect technology improves power cycling capabilities.
This allows the modules to reduce the overall energy consumption in the motor and converter of the train by ten percent with a more compact, lighter converter and simplified cooling systems as well as lower acoustic noise from the motors.
An Infineon SiC-based XHP 2 power module has been proven in a joint field test with streetcars conducted by Siemens Mobility and Stadtwerke München (SWM) in 2022. The test has shown that power semiconductors based on SiC significantly reduce engine noise during operation.
“For environmentally friendly mobility, rail technology requires innovative semiconductor solutions designed specifically for these applications,” said Dr. Peter Wawer, Division President of Infineon’s Green Industrial Power Division. “With low switching losses and the ability to enable higher switching frequencies, Infineon’s new silicon carbide products contribute to greener and quieter trains, which are extremely important features for tomorrow’s train traffic.”
The CoolSiC XHP2 3,3 kV high-power modules are available as samples for selected customers and will be shown at the PCIM 2023 exhibition this week.
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