This reference design implements an IEEE802.3bt (draft) Power over Ethernet (PoE) Powered Device (PD) with dual redundant inputs and a smooth transition between these inputs and an auxiliary input. The design consists of a 5V/6A synchronous flyback converter and allows for up to three power supplies (two PoE Power Source Equipment (PSE) supplies and one AC/DC wall adapter auxiliary supply) to be used in order to decrease the probability of power and data loss in your system.
In need of an IEEE802.3bt-ready PSE controller? Check out the TPS23881.
| Output voltage options | PMP20859.1 |
|---|---|
| Vin (Min) (V) | 42.5 |
| Vin (Max) (V) | 57 |
| Vout (Nom) (V) | 5 |
| Iout (Max) (A) | 6 |
| Output Power (W) | 30 |
| Isolated/Non-Isolated | Isolated |
| Input Type | DC |
| Topology | Flyback- Synchronous^POE |
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
Complete listing of design components, reference designators, and manufacturers/part numbers
Detailed overview of design layout for component placement
Files used for 3D models or 2D drawings of IC components
Design file that contains information on physical board layer of design PCB
PCB layer plot file used for generating PCB design layout
Includes TI products in the design and potential alternatives.
| Type | Title | Date | |
|---|---|---|---|
| * | Test report | Dual-Input Redundant PoE PD With Smooth Transition Reference Design | Oct. 21, 2018 |
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