This reference design utilizes a diode rectified flyback converter for a 24-V input to isolated 56-V/1.25-A output. The LM51551 PWM controller provides the control for the flyback converter, including hiccup mode short circuit protection. This reference design is ideal for when any well-regulated 56-V output is required, such as the power source for Power over Ethernet (PoE) Power Source Equipment (PSE).
| Output voltage options | PMP22764.1 |
|---|---|
| Vin (Min) (V) | 19.2 |
| Vin (Max) (V) | 28.8 |
| Vout (Nom) (V) | 54 |
| Iout (Max) (A) | 1.25 |
| Output Power (W) | 67.5 |
| Isolated/Non-Isolated | Isolated |
| Input Type | DC |
| Topology | 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
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Includes TI products in the design and potential alternatives.
| Type | Title | Date | ||
|---|---|---|---|---|
| * | Test report | Isolated Flyback Converter (56 V/1.25 A) Reference Design | Jan 19, 2021 |
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