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


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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Design Files

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TI Devices (7)

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Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
INA240  -4 to 80V, bidirectional, ultra-precise current sense amplifier with enhanced PWM rejection  Current sense amplifiers  Sample & Buy View Design Kits & Evaluation Modules
LM5018  7.5-100V Wide Vin, 300mA Constant On-Time Synchronous Buck Regulator  Offline & isolated DC/DC controllers & converters  Sample & Buy View Design Kits & Evaluation Modules
LMG5200  80V GaN Half Bridge Power Stage  Power management  Sample & Buy View Design Kits & Evaluation Modules
LP38691  500-mA, 10-V, low-dropout voltage regulator  Power management  Sample & Buy Not Available
REF3333  3.3-V, 30-ppm/°C drift, 3.9-µA, 3-pin SOT-23, 3-pin SC70, 8-pin UQFN voltage reference  Voltage references  Sample & Buy View Design Kits & Evaluation Modules
SN74AVC8T245  8-Bit Dual-Supply Bus Transceiver with Configurable Voltage-Level Shifting and 3-State Outputs  Voltage level translators  Sample & Buy View Design Kits & Evaluation Modules
TMP302-Q1  Automotive, Pin-Selectable Trip Point 1.4V-Capable Family of Temperature Switches  Temperature sensors  Sample & Buy View Design Kits & Evaluation Modules

CAD/CAE symbols

Part # Package | Pins CAD File (.bxl) STEP Model (.stp)
INA240 Download
LM5018 Download Download
Download Download
LMG5200 Download -
LP38691 Download Download
Download Download
REF3333 Download Download
Download Download
SN74AVC8T245 Download Download
Download Download
Download Download
TMP302-Q1 Download Download

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Technical documentation

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User guide (1)
Title Type Size (KB) Date
PDF 8383 03 Apr 2017
Design files (6)
Title Type Size (KB) Date
ZIP 1218 04 Nov 2016
ZIP 5846 04 Nov 2016
PDF 2813 04 Nov 2016
PDF 554 04 Nov 2016
PDF 72 04 Nov 2016
PDF 829 04 Nov 2016
Related Tools & Software

Reference Designs (1)

Name Part Number Tool Type
48V 3-Phase Inverter with Shunt-based In-line Motor Phase Current Sensing Reference Design  TIDA-00913  Reference design 

Hardware development (1)

Name Part Number Tool Type
C2000 Piccolo MCU F28069M LaunchPad™ development kit  LAUNCHXL-F28069M  Evaluation board 

Software development (1)

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