This reference design converts a universal AC input to an isolated 12-V, 1.5-A output and an isolated 5-V, 0.2-A output. The design achieves a peak efficiency of 92.7%. This reference design features UCC28781-Q1 which is a zero-voltage switching (ZVS) flyback controller to minimize switching losses, UCC5350, a reinforced isolated gate driver to drive the synchronous rectifier MOSFET and TPS629203, a synchronous buck converter with low quiescent current.
| Output voltage options | PMP23331.1 | PMP23331.2 |
|---|---|---|
| Vin (Min) (V) | 90 | 10 |
| Vin (Max) (V) | 265 | 15 |
| Vout (Nom) (V) | 12 | 5 |
| Iout (Max) (A) | 1.5 | .2 |
| Output Power (W) | 18 | 1 |
| Isolated/Non-Isolated | Isolated | Non-Isolated |
| Input Type | AC | DC |
| Topology | Flyback- Synchronous | Buck- Synchronous |
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
Includes TI products in the design and potential alternatives.
| Type | Title | Date | ||
|---|---|---|---|---|
| Test report | 19-W, AC/DC Multi-Output 12-V and 5-V, ZVS Flyback Ref. Des. for Server Apps | PDF | HTML | Aug. 24, 2023 |
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