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High-Efficiency, 230-VAC, 2-kW, 3-phase GaN Inverter Reference Design

Reference Design for Servo Drives and Robotics

Introduction

This reference design demonstrates a high-efficiency, 320-VDC input, 3-phase power stage utilizing six fast-switching GaN-FETs. It is designed for motor-integrated servo drives and robotics applications, featuring integrated drivers, protection, and temperature reporting with hot-side MCU control. The design offers accurate phase-current sensing with isolated delta-sigma modulators and DC-link voltage measurement. For ease of evaluation, it includes a 3.3-V I/O interface signal with a 180-pin connector for C2000™ MCU controlCARDs, as well as a standard header to connect to other MCUs like the Sitara™ AM2631.

Key Features

High-efficiency, 3-phase GaN-FET power stage with 99.4% peak efficiency at 16-kHz PWM.
Integrated drivers, protection, and temperature reporting in LMG3422R030 GaN FETs.
Accurate phase-current sensing with isolated delta-sigma modulators.
3.3-V I/O interface for easy evaluation with various MCUs.

Applications

Single and multi-axis servo drives
Industrial and collaborative robots

Resources

Explore the design files, schematics, BOM, and more for this reference design at Texas Instruments TIDA-010255 product page.

Models: R971-KN-1, R971-KN-1 High-Efficiency 230-VAC 3-phase GaN Inverter, High-Efficiency 230-VAC 3-phase GaN Inverter, 230-VAC 3-phase GaN Inverter, 3-phase GaN Inverter, GaN Inverter

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References

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