New IGBT module enables downsizing of drives combined with maximum efficiency

The paradigm shift towards offloading complexity to suppliers and adopting smaller IGBT modules is apparent in multifarious applications. In response to the global push for downsizing and integration, Infineon Technologies AG has introduced the 4.5kV XHP 3 IGBT modules that will fundamentally alter the landscape for medium voltage drives (MVD) and transportation applications operating at 2000VAC to 3300VAC in 2- and 3-level topologies. Applications profiting from the new devices include large conveyor belts, pumps, high-speed trains, locomotives, and commercial, construction, and agricultural vehicles.

The family incorporates a 450A dual IGBT module with TRENCHSTOP IGBT4 and an emitter-controlled diode and a 450A double diode module with an emitter-controlled E4 Diode. Both modules offer improved isolation of 10.4kV. Together, they assist in simplifying paralleling and downsizing without sacrificing efficiency. Previously, complex busbars were needed to parallelise switching modules, resulting in complex design efforts and leakage inductance. The innovative design of the family simplifies paralleling by conveniently positioning the connections side by side. As a result, only a single straight busbar is needed for paralleling.

The family also enables developers to decrease the number of units. Conventional IGBT solutions use numerous single switches and a double diode. With the new devices, however, designs can be lowered to two dual switches and a smaller double diode – a notable step forward in integrated drives.

Combining the XHP 3 FF450R45T3E4_B5 dual switch and the DD450S45T3E4_B5 double diode allows significant cost savings and a smaller footprint. For example, Infineon’s previous IGBT solutions required four 140mm x 190mm² or 140mm x 130mm² switches and one 140mm x 130mm² double diode. The new family can reduce the components to two 140mm x 100mm² dual switches and a smaller 140mm x 100mm² double diode.

The IGBT modules FF450R45T3E4_B5 and DD450S45T3E4_B5 are available now.