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3D DMD mechanical geometry
TIDA-010255
230VAC, 2kW three-phase GaN inverter reference design for robotics and servo drives
TIDA-010255
Overview
This reference design demonstrates a high-efficiency 320-VDC input, three-phase power stage using six fast switching GaN-FETs with integrated driver, protection and temperature reporting with hot-side microcontroller control, especially for motor-integrated servo drives and robotics applications. Accurate phase-current sensing is achieved with isolated delta-sigma modulators. The DC-link voltage is measured with a non-isolated small form-factor delta-sigma modulator and an analog phase voltage feedback option allows validation of advanced sensorless designs like InstaSPIN-FOC™. For easy evaluation, this design offers a 3.3-V I/O interface signal with a 180-pin connector for C2000™ microcontroller controlCARDs, as well as a standard header to connect to other microcontrollers, such as the Sitara™ AM2631.
Features
- 99.4% peak power efficiency at 16kHz PWM with 320-V DC-link voltage to help reduce the size of the heatsink
- 600-V, 30-mΩ GaN FET with integrated driver and protection increase reliability and reduce system cost
- On-chip temperature sensor enables precise monitoring of the die temperature to maximize safe operation area (SOA)
- Zero reverse recovery losses reduce switch node oscillations and low dead time of 120ns minimize phase voltage distortions
- Precision phase current sensing with ±50A linear range using 1-mΩ shunt and isolated delta-sigma modulator
- Interface with 3.3-V I/O enables easy evaluation of TI GaN technology for motor drives with C2000™, Sitara™ or other microcontrollers
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.
TIDUF28.PDF (2195 KB)
Reference design overview and verified performance test data
TIDMC66.PDF (698 KB)
Detailed overview of design layout for component placement
TIDMC65.PDF (169 KB)
Complete listing of design components, reference designators, and manufacturers/part numbers
TIDMC68.ZIP (4239 KB)
Files used for 3D models or 2D drawings of IC components
TIDCGJ5.ZIP (1474 KB)
Design file that contains information on physical board layer of design PCB
TIDMC64.PDF (977 KB)
Detailed schematic diagram for design layout and components
Products
Includes TI products in the design and potential alternatives.
Isolated ADCs
AMC1306M05 — ±50-mV input, precision current sensing reinforced isolated modulator
Power modules (integrated inductor)
TPSM560R6H — 4.2-V to 60-V input, 1-V to 16-V output, 0.6-A step-down module in 5-mm x 5.5-mm x 4-mm QFN
Gallium nitride (GaN) power stages
LMG3422R030 — 600-V 30-mΩ GaN FET with integrated driver, protection and temperature reporting
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Technical documentation
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| Type | Title | Date | ||
|---|---|---|---|---|
| * | Design guide | High-Eff. 230-VAC 2-kW 3-phase GaN Inverter RefDes for Servo Drives and Robotics | PDF | HTML | Nov 28, 2023 |
| Certificate | TIDA-010255 EU RoHS Declaration of Conformity (DoC) | Apr 4, 2023 |
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