IRPT2056A

The IRPT2056A Power Module, shown in figure 1, is a chip and wire epoxy encapsulated module. The IRPT2056A houses input rectifiers, output inverter, current sense shunts and NTC thermistor. The 3- phase input bridge rectifiers are rated at 800V. The brake circuit uses 600V IGBT and freewheeling diode. The inverter section employs 600V, short circuit rated, ultrafast IGBT's and ultrafast freewheeling diodes. Current sensing is achieved through 25 m low inductance shunts provided in the positive and negative DC bus rail. The NTC thermistors provide temperature sensing capability. The lead spacing on the power module meets UL840 pollution level 3 requirements.

The power circuit and layout within the module are carefully designed to minimize inductance in the power path, to reduce noise during inverter operation and to improve the inverter efficiency. The Driver-Plus Board required to run the inverter can be soldered to the power module pins, thus minimizing assembly and alignment. The power module is designed to be mounted to a heat sink with two screw mount positions, in order to insure good thermal contact between the module substrate and the heat sink.