The PMP20289 was built and tested to verify the performance of a high frequency (>400kHz nominal switching frequency) LLC series resonant converter (LLC-SRC) implemented with Texas Instrument’s high voltage GaN FETs under nominal (390V to 12V) voltage conversion. The digital controller UCD3138A is used along with the UCD7138 SR controller to optimize LLC-SRC efficiency. TI’s high voltage direct drive GaNFET LMG3410 is used to enable fast switching and be able to minimize dead-time between half-bridge switches. The test results show that 96.8% peak efficiency is achieved at 24A load and 96.3% efficiency is achieved at 42A full load with a switching frequency over 350kHz in a 390V to 12V conversion.
| Output voltage options | PMP20289.1 | PMP20289.2 | PMP20289.3 |
|---|---|---|---|
| Vin (Min) (V) | 370 | 200 | 5.5 |
| Vin (Max) (V) | 400 | 400 | 9 |
| Vout (Nom) (V) | 12 | 7 | 5 |
| Iout (Max) (A) | 42 | 1 | 1 |
| Output Power (W) | 504 | 7 | 5 |
| Isolated/Non-Isolated | Isolated | Isolated | Isolated |
| Input Type | DC | DC | DC |
| Topology | Half Bridge- LLC | Flyback- DCM | Buck- Synchronous |
A fully assembled board has been developed for testing and performance validation only, and is not available for sale.
Download ready-to-use system files to speed your design process.
Test results for the reference design, including efficiency graphs, test prerequisites and more
Detailed schematic diagram for design layout and components
Detailed schematic diagram for design layout and components
Detailed schematic diagram for design layout and components
Detailed schematic diagram for design layout and components
Complete listing of design components, reference designators, and manufacturers/part numbers
Complete listing of design components, reference designators, and manufacturers/part numbers
Complete listing of design components, reference designators, and manufacturers/part numbers
Complete listing of design components, reference designators, and manufacturers/part numbers
Detailed overview of design layout for component placement
Detailed overview of design layout for component placement
Detailed overview of design layout for component placement
Detailed overview of design layout for component placement
Files used for 3D models or 2D drawings of IC components
Files used for 3D models or 2D drawings of IC components
Files used for 3D models or 2D drawings of IC components
Files used for 3D models or 2D drawings of IC components
Files used for 3D models or 2D drawings of IC components
Files used for 3D models or 2D drawings of IC components
Design file that contains information on physical board layer of design PCB
Design file that contains information on physical board layer of design PCB
Design file that contains information on physical board layer of design PCB
Design file that contains information on physical board layer of design PCB
Design file that contains information on physical board layer of design PCB
Design file that contains information on physical board layer of design PCB
PCB layer plot file used for generating PCB design layout
PCB layer plot file used for generating PCB design layout
PCB layer plot file used for generating PCB design layout
PCB layer plot file used for generating PCB design layout
PCB layer plot file used for generating PCB design layout
PCB layer plot file used for generating PCB design layout
Includes TI products in the design and potential alternatives.
| Type | Title | Date | |
|---|---|---|---|
| * | User guide | 400V In to 12V Out, 500W Using LMG3410 User Guide | Aug. 17, 2016 |
| * | Test report | PMP20289 Test Results | Aug. 16, 2016 |
| Technical article | Power Tips: Improve power supply reliability with high voltage GaN devices | Nov. 03, 2016 | |
| Technical article | Power Tips: How GaN devices boost resonant converter efficiency | Aug. 25, 2016 |
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