This reference design introduces an offline single-stage supercapacitor charger. Isolated constant-voltage constant-current flyback controller UCC28740 charges three supercapacitors in series directly from a wide input (195 VAC to 480 VAC). The supercapacitor output voltage is limited to 6.5 V.
| Output voltage options | PMP31140.1 |
|---|---|
| Vin (Min) (V) | 195 |
| Vin (Max) (V) | 480 |
| Vout (Nom) (V) | 6.5 |
| Iout (Max) (A) | 1.1 |
| Output Power (W) | 7.15 |
| Isolated/Non-Isolated | Isolated |
| Input Type | AC |
| Topology | Flyback- Quasi 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
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Design file that contains information on physical board layer of design PCB
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Includes TI products in the design and potential alternatives.
| Type | Title | Date | ||
|---|---|---|---|---|
| Test report | Offline Supercapacitor Backup Power Supply With Passive Cell Balancing Ref Des | PDF | HTML | Aug. 08, 2022 |
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