IRPT1058

The IRPT1058C provides the complete conversion function for a 0.75 hp (0.56 kW) variable frequency, variable voltage, AC motor controller. The combines a power module IRPT1058A with a Driver-Plus Board IRPT1058D. Figure 1 shows the block diagram of the within an AC motor control system.

The power module contains a single-phase input bridge rectifier IRPT1058, 3-phase IGBT inverter, current sense shunts, and a
thermistor. It is designed for easy mounting to a heat sink. The Driver-Plus Board contains DC link capacitors, capacitor soft charge function using NTC thermistor, surge suppression MOV, IGBT gate drivers, DC bus voltage and current feedback signals, protection circuitry and local power supply. It is designed to mate with a controller board through a single row header. Terminal blocks are provided on the Driver-Plus Board for all end user line input and motor output.

Output power is Pulse-Width Modulated (PWM) 3-phase, variable frequency, variable voltage controlled by an externally generated user-provided PWM controller for inverter IGBT switching. The power supply offers the user non-isolated 5V and 15V to power the micro-controller.