This reference design is a compact isolated bias power design which can be used for the GaN half-bridge. The design uses the UCC25800 to generate two isolated 12-V power supplies for the two FETs of the half-bridge and converts the single 12-V DC into two 12-V DC lines with isolation. The UCC25800 has a 1-MHz switching ability, LLC resonant topology and an ultra-compact transformer (4.5 mm × 3.2 mm × 3.5 mm). Using these features of the device, 1.2 W of power with relatively high efficiency can be delivered to the reference design.
| Output voltage options | PMP41034.1 |
|---|---|
| Vin (Min) (V) | 11.5 |
| Vin (Max) (V) | 12.5 |
| Vout (Nom) (V) | 12 |
| Iout (Max) (A) | .15 |
| Output Power (W) | 1.8 |
| Isolated/Non-Isolated | Isolated |
| Input Type | DC |
| Topology | Half Bridge- Resonant |
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
Complete listing of design components, reference designators, and manufacturers/part numbers
Detailed overview of design layout for component placement
Files used for 3D models or 2D drawings of IC components
Design file that contains information on physical board layer of design PCB
PCB layer plot file used for generating PCB design layout
| Type | Title | Date | ||
|---|---|---|---|---|
| Test report | Ultra-Compact Isolated Bias Reference Design With UCC25800 | PDF | HTML | Oct. 28, 2022 |
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