120W planar transformers for active clamp forward topology

August 26, 2015 // By Graham Prophet
Coilcraft’s PoE120PL Series of high-efficiency planar transformers are optimised for active clamp forward converters, including use in Power over Ethernet PSE and pre-standard PD devices.

The PoE120PL Series is suitable for 60-120W applications such as thin clients, monitors, industrial Ethernet, IPTV, and building management; and are suited for 90-W PoE++ Powered Devices (PDs).

PoE120PL SeriesPoE120PL Series transformers are optimised for 200kHz, with a 36-72V input. They offer excellent DCR for high efficiency and very low leakage inductance. They also provide 1500 Vrms primary-to-secondary isolation and 0.229 mm clearance above the seating plane and include a 12-V auxiliary winding.

PoE120PL Series transformers have a 20.83 x 23.37 mm footprint, with a maximum height of 10.34 mm, requiring far less board space and overall volume than a standard EFD20 wire wound package. They are RoHS compliant and feature matte tin over nickel over brass terminations. They have an ambient temperature range of -40°C to +125°C.

Coilcraft; www.coilcraft.com/poe120pl.cfm