This reference design uses the UCC2897A active clamp forward controller to convert 176-VAC to 264-VAC input to a 24-VDC output with a max power of 150 W. The UCC5304 isolated gate driver is used to drive the high-voltage clamp FET. The design achieves > 92% efficiency with diode rectification. Secondary-side current sense provides precise overcurrent protection through a constant current regulation loop. The design passes CISPR 32 conducted emissions testing.
| Output voltage options | PMP22495.1 |
|---|---|
| Vin (Min) (V) | 176 |
| Vin (Max) (V) | 264 |
| Vout (Nom) (V) | 24 |
| Iout (Max) (A) | 6.25 |
| Output Power (W) | 150 |
| Isolated/Non-Isolated | Isolated |
| Input Type | AC |
| Topology | Forward- 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
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Design file that contains information on physical board layer of design PCB
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| Type | Title | Date | ||
|---|---|---|---|---|
| Test report | 176–264 VAC Input, 24-V, 150-W Active Clamp Forward Reference Design | PDF | HTML | Feb. 16, 2023 |
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