Infineon adds power switch module in the 4.5 kV voltage class

August 19, 2013 // By Graham Prophet
Reliable and robust with lower conduction and switching losses and the highest power density, are the properties claimed for a 4.5kV IHV module from Infineon.

The high-isolation 6.5 kV housing offers enhanced protection by means of greater creepage and clearance distance enabling the module to be used in demanding environments. With optimised thermal properties, the IHV module is suitable for use in traction applications.

"With our new high-power product we are aiming at the international market for rail vehicles... we expect demand to continue to rise worldwide," says Björn Rentemeister, responsible marketing manager in the Industrial Power Control Division of Infineon. "For this reason the IHV A module is produced in a housing standard that is accepted worldwide which allows rapid and simple implementation by the customer in both new and already existing designs."

The module now available is based on an IGBT 3 device with trench field-stop technology and a field-stop diode. In combination with a base plate made of aluminum-silicon carbide with a low expansion coefficient and high thermal conductivity, it guarantees low conduction and switching losses and thus high energy efficiency combined with robustness. The module is designed for current between 400 and 1,200A and features enhanced DC stability. It can be used in an extended temperature range from -50°C to 125°C. It retains its blocking capability completely even below 0°C.

This IHV module complements the existing product family, which currently consists of module classes at 3.3 kV, 4.5 kV and 6.5 kV, each in single-switch and dual-diode configurations. An extension of the 4.5 kV module class with a chopper and another diode configuration is planned for the beginning of 2014. For the first half of 2014 Infineon plans the launch of type B housing for applications in medium voltage drives, power transmission including HVDC, and distribution and inverters for wind power stations.