is reference design is a GaN-based 3-kW phase-shifted full-bridge (PSFB) converter. This design uses an active clamp on the secondary side to minimize the voltage stress on the synchronous rectifier (SR) MOSFETs enabling the use of lower voltage rating MOSFETs that possess better figure-of-merit (FoM). PMP22951 uses 30-mΩ GaN on the primary side and 100-V, 1.8-mΩ GaN for the synchronous rectifiers. PSFB control is realized using TMS320F280049C real-time microcontroller. The PSFB converter operates at 140-kHz switching frequency and achieves a peak efficiency of 97.45% with 385-V input.
| Output voltage options | PMP22951.1 |
|---|---|
| Vin (Min) (V) | 350 |
| Vin (Max) (V) | 400 |
| Vout (Nom) (V) | 54 |
| Iout (Max) (A) | 56 |
| Output Power (W) | 3024 |
| Isolated/Non-Isolated | Isolated |
| Input Type | DC |
| Topology | Full Bridge- Phase Shifted |
A fully assembled board has been developed for testing and performance validation only, and is not available for sale.
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Test results for the reference design, including efficiency graphs, test prerequisites and more
Detailed schematic diagram for design layout and components
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Includes TI products in the design and potential alternatives.
| Type | Title | Date | ||
|---|---|---|---|---|
| Test report | 54-V, 3-kW, Phase-Shifted Full Bridge With Active Clamp Reference Design | PDF | HTML | Aug. 24, 2023 |
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