This reference design is a dual-output flyback converter using secondary-side regulation based on the UCC28742. A 5-V rail is regulated within ±1% precision and a cross regulation of a 12-V rail is within -8% to +14% at 25% to 100% load. The design utilizes a single-layer PCB for cost optimization. The peak efficiency is 82.82% at 115 V/50 Hz and 83.19% at 230 V/50 Hz. Power consumption at standby mode is 31.6 mW at 115 V/50 Hz and 54.2 mW at 230 V/50 Hz.
| Output voltage options | TIDA-010058.1 | TIDA-010058.2 |
|---|---|---|
| Vin (Min) (V) | 85 | 85 |
| Vin (Max) (V) | 264 | 264 |
| Vout (Nom) (V) | 12 | 5 |
| Iout (Max) (A) | 2.5 | 2 |
| Output Power (W) | 30 | 10 |
| Isolated/Non-Isolated | Isolated | Isolated |
| Input Type | AC | AC |
| Topology | Flyback- Non Sync | Flyback- Non Sync |
A fully assembled board has been developed for testing and performance validation only, and is not available for sale.
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Reference design overview and verified performance test data
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 | ||
|---|---|---|---|---|
| * | Design guide | 5-V/2-A, 12-V/2.5-A Dual-Output Flyback Ref Design With < 50-mW Standby Power | Jul. 02, 2019 |
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