This converter is used for Class 1 PoE applications where high-efficiency and multiple-outputs are required. The multi-outputs for this design are 3.3V/0.7A, 5V/0.145A, 3.3V/1.5A. The flyback converter with synchronous rectifier provides excellent efficiency, and small size for PoE applications, such as an IP phone solution.
The TPS23785B contains both the PoE powered device and the PWM controller functions.
| Output voltage options | PMP8752.1 | PMP8752.2 |
|---|---|---|
| Vin (Min) (V) | 36 | 36 |
| Vin (Max) (V) | 57 | 57 |
| Vout (Nom) (V) | 3.3 | 5 |
| Iout (Max) (A) | .7 | .15 |
| Output Power (W) | 2.31 | .75 |
| Isolated/Non-Isolated | Isolated | Isolated |
| Input Type | DC | DC |
| Topology | Flyback- Synchronous^POE | Flyback- Synchronous^POE |
A fully assembled board has been developed for testing and performance validation only, and is not available for sale.
Download ready-to-use system files to speed your design process.
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
Design file that contains information on physical board layer of design PCB
Includes TI products in the design and potential alternatives.
| Type | Title | Date | ||
|---|---|---|---|---|
| Test report | PMP8752 Test Results | Feb. 01, 2013 |
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