New 120 Watt Planar Transformers for Active Clamp Forward Topology

Sept2_CoilcraftCoilcraft has introduced its new PoE120PL series of high-efficiency planar transformers, which are optimized for active clamp forward converters, including use in Power over Ethernet PSE and pre-standard PD devices. The PoE120PL series is suitable for 60-120 watt applications such as thin clients, monitors, industrial Ethernet, IPTV, building management, nurse call systems, point-of-sale terminals and information kiosks. They are suited for 90 Watt PoE++ Powered Devices (PDs).

PoE120PL series transformers are optimized for 200 kHz, with a 36-72 Volt input. They offer improved DCR for high efficiency and low leakage inductance. They also provide 1,500 Vrms primary-to-secondary isolation and 0.009 inch (0.229 mm) clearance above the seating plane and include a 12-volt auxiliary winding.

PoE120PL series transformers have a 20.83 by 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.

As with all Coilcraft parts, complete technical specifications and free evaluation samples of the PoE120PL Series are available online at www.coilcraft.com/poe120pl.cfm.