Dual-input redundant PoE PD with smooth transition reference design
PMP20859
This product has been released to the market and is available for purchase. For some products, newer alternatives may be available.
This product has been released to the market and is available for purchase. For some products, newer alternatives may be available.
See the Important Notice and Disclaimer covering reference designs and other TI resources.
Key Document
- Dual-Input Redundant PoE PD With Smooth Transition Reference Design
(PDF 1042 KB)
21 Oct 2018
Description
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.
Features
- Redundant inputs: two PoE and 48V adapter
- Continuous output when switching between inputs
- 84% efficiency with 5V/6A output and PoE input
See the Important Notice and Disclaimer covering reference designs and other TI resources.
