ON Semiconductor

Demoboard FEBFDMQ8205_90W

GreenBridge for Power Over Ethernet

Topology: Flyback
Input Voltage (min.): 42.50 V
Input Voltage (max.): 57.00 V
Output 1: 3.30 V / 27.000 A

Original publication on 2016-06-22, revision 0.1.0


GreenBridge™ FDMQ8205 evaluation board highlights the polarity protection bridge at input of PoE (Power over Ethernet) PD (Power device) so that the input will be insensitive to the polarity of a power source coupled to the device. The device itself may be sensitive to the polarity of the power source, but bridge rectifier can be configured to provide the proper polarity to the device when the polarity of the power source is reversed. GreenBridge replaces the conventional diode bridge to reduce the power dissipation caused by the large voltage drop of a diode bridge, resulting in a high efficiency power device while not compromising IEEE802.3af/at. The small package size of MLP4.5x5 reduces PCB area and increases power density.


  • Active MOSFET bridge with low forward drop to replace conventional diode bridge IEEE802.3af/at compliant
  • . Not compromise PoE detection and classification
  • . Works with 2 and 4-pair architecture Enhanced thermal performance package of 4x4.5mm MLP Wide operating voltage range up to 70V


  Order Code SPEC Product series L
n IR
RDC1 max
RDC2 max
(V (AC))
Anzahl Ports HPLE Datenrate Betriebstemperatur xPxC Typ Montageart Anwendungssystem Samples
749251100 PDF WE-CST Current Sense Transformer 2000 1 : 100 20 0.75 5.5 50 500
749022016 PDF Design Kit LAN Transformer WE-LAN 1500 1 No 10/100/1000 Base-T 0 °C up to +70 °C
61500814221 PDF WR-MJ Modular Jack Horizontal Shielded 8P8C Tab Down 8P8C Horizontal THT CAT 3