This reference design takes a Universal AC input (85 VAC - 265 VAC) and converts to a 17.5-V isolated output using a PSR flyback topology. It is then followed by a battery charger circuit, which outputs up to 15 V to a lead acid battery. This is a fast-charge design capable of delivering 12 V @ 2.5 A (30 W) to the battery.
| Output voltage options | PMP21618.1 |
|---|---|
| Vin (Min) (V) | 85 |
| Vin (Max) (V) | 265 |
| Vout (Nom) (V) | 12 |
| Iout (Max) (A) | 2.5 |
| Output Power (W) | 30 |
| Isolated/Non-Isolated | Isolated |
| Input Type | AC |
| Topology | Buck- Synchronous^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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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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| Type | Title | Date | ||
|---|---|---|---|---|
| * | Test report | Universal input reference design for 12-V lead acid battery charger | Mar. 13, 2019 |
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