48V/10A High Frequency PWM 3-Phase GaN Inverter Reference Design for High-Speed Drives


Design files


Low voltage, high-speed drives and/or low inductance brushless motors require higher inverter switching frequencies in the range of 40 kHz to 100 kHz to minimize losses and torque ripple in the motor. The TIDA-00909 reference design achieves that by using a 3-phase inverter with three 80V/10A half-bridge GaN power modules LMG5200 and uses shunt based phase current sensing. Gallium nitride (GaN) transistors can switch much faster than silicon FETs and integrating the GaN FET and driver in the same package reduces parasitic inductances and optimizes switching performance reducing losses, thus allowing to down-size or eliminate the heatsink. The TIDA-00909 offers a TI BoosterPack compatible interface to connect to a C2000 MCU LaunchPad™ development kit for easy performance evaluation.

  • 3-phase GaN inverter with wide input voltage range 12V to 60V and 7Arms/10Apeak output current, tested up to 100 kHz PWM.
  • GaN power stage with greatly reduced switching losses allows high PWM switching frequencies with peak efficiency up to 98.5% at 100 kHz PWM
  • LMG5200 GaN half-bridge power stage ease PCB layout and reduce parasitic inductances for optimized switching performance, less than 2ns rise/fall time.
  • Very low switch node voltage over- and undershoot with very low 12.5ns dead band minimize phase voltage ringing, as well as reduce phase voltage distortions and EMI.
  • Precision shunt-based phase current sensing with high accuracy (0.1%).
  • TI BoosterPack compatible interface with 3.3V I/O for easy performance evaluation with a C2000 MCU LaunchPad™ development kit.
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A fully assembled board has been developed for testing and performance validation only, and is not available for sale.

Design files & products

Design files

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


Reference design overview and verified performance test data


Detailed schematic diagram for design layout and components


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


Detailed overview of design layout for component placement

TIDROK6.ZIP (5846 K)

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

TIDCCV4.ZIP (1218 K)

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

TIDROK5.PDF (2813 K)

PCB layer plot file used for generating PCB design layout


Includes TI products in the design and potential alternatives.

AC/DC & DC/DC converters (integrated FET)

LM50187.5-100V Wide Vin, 300mA Constant On-Time Synchronous Buck Regulator

Data sheet: PDF | HTML
Analog current-sense amplifiers

INA240-4 to 80V, bidirectional, ultra-precise current sense amplifier with enhanced PWM rejection

Data sheet: PDF | HTML
Direction-controlled voltage translators

SN74AVC8T2458-Bit Dual-Supply Bus Transceiver with Configurable Voltage-Level Shifting and 3-State Outputs

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

LMG520080V GaN Half Bridge Power Stage

Data sheet: PDF | HTML
Linear & low-dropout (LDO) regulators

LP38691500-mA, 10-V, low-dropout voltage regulator

Data sheet: PDF | HTML
Series voltage references

REF33333.3-V, 30-ppm/°C drift, 3.9-µA, 3-pin SOT-23, 3-pin SC70, 8-pin UQFN voltage reference

Data sheet: PDF | HTML
Temperature switches

TMP302-Q1Automotive, Pin-Selectable Trip Point 1.4V-Capable Family of Temperature Switches

Data sheet: PDF | HTML

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Technical documentation

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Type Title Date
* Design guide 48V/10A High-Frequency PWM, 3-Phase GaN Inverter Reference Design for HS Motors (Rev. B) Apr. 03, 2017
Technical article Five benefits of enhanced PWM rejection for in-line motor control PDF | HTML Nov. 08, 2016
Technical article What’s next for Industry 4.0? The best new technologies shaping the future of smar PDF | HTML Nov. 07, 2016

Related design resources

Hardware development

LAUNCHXL-F28069M F28069M LaunchPad™ development kit for C2000™ Piccolo™ MCU

Reference designs

TIDA-00913 48V 3-Phase Inverter with Shunt-based In-line Motor Phase Current Sensing Reference Design

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