IRPT4052

The IRPT4052C provides the complete power conversion function for a 7.5hp (5.5kW) variable voltage, variable frequency, AC motor controller. The combines a power assembly IRPT4052A with a Driver-Plus Board IRPT4052D. Figure 1 shows the block diagram of the within an AC motor control system.

The power assembly contains a 3-phase input bridge rectifier, 3-phase IGBT inverter and a thermistor mounted on an Insulated Metal Substrate (IMS) power board. The IRPT4052 is designed for easy mounting to a heat sink.

The Driver-Plus Board contains DC link capacitors, capacitor pre-charge function, isolated IGBT gate drive circuits, shutdown protection, isolated trip and current feedback signals, and local power supply. The IRPT4052 interfaces to the power assembly via soldered connector pins. Terminal blocks are provided on the Driver-Plus Board for all end-user external connections to the.

Output power is Pulse-Width Modulated (PWM), 3-phase, variable-frequency, variable voltage controlled by externally generated user provided PWM controller for inverter IGBT switching. The PWM input signals and feedback signals are optically isolated from the power circuit.