EVALPM8803-FLY Datasheet, PDF (1/5 Pages) STMicroelectronics – EVALPM8803-FLY: IEEE802.3at compliant demonstration kit with synchronous flyback PoE converter

EVALPM8803-FLY
EVALPM8803-FLY: IEEE802.3at compliant demonstration kit
with synchronous flyback PoE converter
Features
■ EEE 802.3at compliant
■ Support for Gigabit Ethernet
■ Data pass-through for the Ethernet data
■ Works with power supplied from Ethernet LAN
cables or from local auxiliary sources
■ Successful IEEE802.3at layer1 classification
indicator
■ Single output 3.3 V/5 V
■ 90+% converter efficiency
■ Board size 10x13 cm
Description
The EVALPM8803-FLY is a demonstration board
implementing an IEEE802.3at compatible
interface together with a synchronous rectification
flyback converter based on PM8803.
The board is designed to work up to 30 W, and
with minimal changes the output voltage can be
selected either 5 V or 3.3 V. For sake of flexibility,
alternative footprint have been foreseen for the
main component (MOS, transformer, etc).
It is possible to connect auxiliary sources to one
of the 2 jacks in the EVALPM8803-FLY like in real
application design. In one case thanks to the
PM8803 feature, prevalence of the auxiliary
source can be guaranteed.
Three LEDs give indication of :
– the converter is running
– an external auxiliary source is connected to
the board a type 2 PSE is connected to the
board.
EVALPM8803-FLY
April 2011
Doc ID 018592 Rev 1
1/5
www.st.com
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