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20kW 3-phase PFC Inverter

Overview

This 3-phase power factor correction (PFC) inverter incorporates Renesas high-performance MCUs for digital PFC control and communication. The RA6M3 MCU functions as a middle communication controller, while the RA8T1 MCU serves as a digital controller for the high-power PFC inverter, supporting power capacities of up to 20kW.

System Benefits:

  • Implements an algorithm optimized for the Renesas Arm® Cortex®-M85 480MHz MCU-based 3-phase PFC inverter.
  • Utilizes high-performance gate drivers to optimize switching behavior, reducing losses and improving efficiency.

Block Diagram

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RTC

Application-Specific Clocks

RS-485

Standard RS-485/RS-422

MCU

RA Arm Cortex-M MCUs

Flash

LDO

Linear Regulators (LDO)

Buck Regulator

Buck Regulators (Integrated FETs)

Gate Driver

IGBT Drive Photocouplers / Optocouplers

Photocoupler Isolation Amplifier

Isolation Amplifier Analog Output Photocouplers / Optocouplers

MCU

RA Arm Cortex-M MCUs

Op Amp

General-purpose Op Amps

Buck Regulator

Buck Regulators (Integrated FETs)

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