This reference design is a 65-W, high-power density USB charger using the UCC28782 active-clamp flyback controller achieving 30-W/in power density. The maximum power rating is 65-W at 20-V VOUT across a universal AC-input range. VOUT is also adjustable to 20-, 15-, 9-, and 5-V output voltage and 3 A. The design reaches a peak efficiency of 94%. The average efficiency and standby power levels are designed to meet DoE Level VI and CoC Tier 2 limits.
| Output voltage options | PMP40974.1 | PMP40974.2 | PMP40974.3 | PMP40974.4 |
|---|---|---|---|---|
| Vin (Min) (V) | 90 | 90 | 90 | 90 |
| Vin (Max) (V) | 264 | 264 | 264 | 264 |
| Vout (Nom) (V) | 5 | 9 | 15 | 20 |
| Iout (Max) (A) | 3 | 3 | 3 | 3.25 |
| Output Power (W) | 15 | 27 | 45 | 65 |
| Isolated/Non-Isolated | Isolated | Isolated | Isolated | Isolated |
| Input Type | AC | AC | AC | AC |
| Topology | Flyback- Active Clamp | Flyback- Active Clamp | Flyback- Active Clamp | Flyback- Active Clamp |
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 | High Power Density 65-W, USB Type-C® Charger Using Active Clamp Flyback Ref Des | PDF | HTML | Oct. 26, 2021 |
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