IRPT1057A 查看數據表（PDF） - International Rectifier

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IRPT1057A

Power Module for 0.75 hp Motor Drives

International Rectifier 

IRPT1057A

System Description

The IRPT1057A Power Module

The IRPT1057A Power Module, shown in figure 1, is a chip

and wire epoxy encapsulated module. It houses input rectifiers,

output inverter, current sense shunts and NTC thermistor. The

3-phase input bridge rectifiers are rated at 800V. The inverter

section employs 600V, short circuit rated, ultrafast IGBTs and

ultrafast freewheeling diodes. Current sensing is achieved

through 75 mΩ low inductance shunts provided in the positive

and negative DC bus rail. The NTC thermistor provides

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.

The IRPT1057C

(Figure 3) provides the

complete power conversion function for a 0.75 hp (0.56 kW)

variable voltage, variable frequency AC motor controller. The

combines the Power Module (IRPT1057A)

with a Driver-Plus Board (IRPT1057D).

Figure 3. IRPT1057C

page 2

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