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TIDA-010276

36V, 50A 3-phase GaN inverter reference design for BLDC motor control

Design files

TIDA-010276

Design files

Overview

This design demonstrates a 36V, 50A gallium nitride (GaN) field-effect transistor (FET) power stage for driving a three-phase brushless DC motor in cordless tools operating from a 5-cell Li-ion battery to a 10-cell battery pack. This reference design uses the LMG3100R017 GaN FET with integrated GaN-FET drive to improve the motor control system efficiency and performance. Additionally, the design offers a TI BoosterPack™ Plug-in Module compatible with 3.3V I/O interface that can connect to a C2000™ MCU LaunchPad™ development kit or MSPM0 MCU LaunchPad development kit for quick and easy performance evaluation of TI GaN technology.

Features
  • 6.50mm × 4.0mm LMG3100R017 GaN FET with integrated driver enables high power density and easy PCB layout
  • High efficiency (> 99% peak) at 20kHz PWM enables operation at 25°C ambient up to 50A peak current without heat sink, 98.5% efficiency at 80kHz PWM in 50A peak current
  • LMG3100R017 enables operation at higher PWM frequencies to help reduce DC-bus capacitor size and height by replacing electrolytic with ceramic capacitors
  • Zero reverse recovery losses reduce switch node oscillations
  • Low dead time of <20ns minimizes phase voltage distortions
  • Supports high-speed motor control with high PWM frequency
  • Uses low-side current sampling, and adds phase voltage sampling to support verification of sensorless field-oriented control (FOC) or sensorless trapezoidal control
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Design files & products

Design files

Download ready-to-use system files to speed your design process.

download Design guide — TIDA-010276
PDF | HTML
TIDUF86A.PDF (2286 KB)

Reference design overview and verified performance test data

download Assembly drawing — TIDA-010276
TIDMDS9.PDF (622 KB)

Detailed overview of design layout for component placement

download Bill of materials (BOM) — TIDA-010276
TIDMDS8.PDF (340 KB)

Complete listing of design components, reference designators, and manufacturers/part numbers

download CAD/CAE symbol — TIDA-010276
TIDMDT1B.ZIP (4823 KB)

Files used for 3D models or 2D drawings of IC components

download Gerber file — TIDA-010276
TIDCGV2.ZIP (1070 KB)

Design file that contains information on physical board layer of design PCB

download PCB layout — TIDA-010276
TIDMDT0.PDF (2584 KB)

PCB layer plot file used for generating PCB design layout

download Schematic — TIDA-010276
TIDMDS7A.PDF (1097 KB)

Detailed schematic diagram for design layout and components

Products

Includes TI products in the design and potential alternatives.

Linear & low-dropout (LDO) regulators

TPS7B81 — 150-mA, off-battery (40-V), ultra-low-IQ, low-dropout (LDO) voltage regulator with enable

Data sheet: PDF | HTML
Thermistors

TMP61 — 1%, 10-kΩ linear thermistor in 0402, 0603/0805 and through hole packages

Data sheet: PDF | HTML
DC/DC converters

LMR38010 — SIMPLE SWITCHER® 80-V, 1.0-A, 2.2-MHz step-down converter with 40-µA IQ

Data sheet: PDF | HTML
General-purpose op amps

OPA4323 — Quad, 5.5-V, 20-MHz, zero-cross low-noise (6 nV/√Hz) RRIO operational amplifier

Data sheet: PDF | HTML
Gallium nitride (GaN) power stages

LMG3100R017 — 100V 1.7mΩ GaN FET with integrated driver

Data sheet: PDF | HTML

Start development

Hardware development

Development kit

LAUNCHXL-F2800137 — TMS320F2800137 LaunchPad™ development kit for C2000™ real-time MCU

This design demonstrates a 36V, 50A gallium nitride (GaN) field-effect transistor (FET) power stage for driving a three-phase brushless DC motor in cordless tools operating from a 5-cell Li-ion battery to a 10-cell battery pack. This reference design uses the LMG3100R017 GaN FET with integrated (...)
Supported products & hardware

Supported products & hardware

Hardware development
Reference design
TIDA-010276 — 36V, 50A 3-phase GaN inverter reference design for BLDC motor control
In stock
Limit:
Out of stock on TI.com
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LAUNCHXL-F2800137 — TMS320F2800137 LaunchPad™ development kit for C2000™ real-time MCU

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Hardware development
Reference design
TIDA-010276 — 36V, 50A 3-phase GaN inverter reference design for BLDC motor control
Evaluation board

LP-MSPM0G3507 — MSPM0G3507 LaunchPad™ development kit for 80-MHz Arm® Cortex®-M0+ MCU

This design demonstrates a 36V, 50A gallium nitride (GaN) field-effect transistor (FET) power stage for driving a three-phase brushless DC motor in cordless tools operating from a 5-cell Li-ion battery to a 10-cell battery pack. This reference design uses the LMG3100R017 GaN FET with integrated (...)
EVM user’s guide: PDF | HTML
Supported products & hardware

Supported products & hardware

Hardware development
Reference design
TIDA-010264 — MCU based medical alarm with supercapacitor backup reference design TIDA-010276 — 36V, 50A 3-phase GaN inverter reference design for BLDC motor control TIDA-010935 — Solar power line communication reference design TIDA-010985 — Resistive-bridge insulation monitoring device for 800V DC systems with large Y cap reference design
Evaluation board
PLC010935BP — PLC010935BP BoosterPack™ plug-in module for solar power line communication reference design
In stock
Limit:
Out of stock on TI.com
Not available on TI.com

LP-MSPM0G3507 — MSPM0G3507 LaunchPad™ development kit for 80-MHz Arm® Cortex®-M0+ MCU

close
Latest version
Version: null
Release date:
open-in-new

View all versions

Hardware development
Reference design
TIDA-010264 — MCU based medical alarm with supercapacitor backup reference design TIDA-010276 — 36V, 50A 3-phase GaN inverter reference design for BLDC motor control TIDA-010935 — Solar power line communication reference design TIDA-010985 — Resistive-bridge insulation monitoring device for 800V DC systems with large Y cap reference design
Evaluation board
PLC010935BP — PLC010935BP BoosterPack™ plug-in module for solar power line communication reference design
TI’s Standard Terms and Conditions for Evaluation Items apply.

Technical documentation

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* Design guide 36V 50A Three-Phase GaN Inverter Reference Design for BLDC Motor Control (Rev. A) PDF | HTML Jul 21, 2025

Related design resources

Software development

GUI FOR EVALUATION MODULE (EVM)
MOTORSTUDIO — Motor Studio GUI for tuning and evaluating BLDC motor drivers
SOFTWARE DEVELOPMENT KIT (SDK)
C2000WARE-MOTORCONTROL-SDK — MotorControl software development kit (SDK) for C2000™ MCUs

Support & training

TI E2E™ forums with technical support from TI engineers

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