Coilcraft has introduced its new PoE120PL series of high-efficiency planar transformers which are optimised for active clamp forward converters, including use in Power over Ethernet PSE (power sourcing equipment) and pre-standard PD (powered devices).
The PoE120PL series is suitable for 60-120 W applications, such as thin clients, monitors, industrial Ethernet, IPTV, building management, nurse call systems, point-of-sale terminals and information kiosks. It is also ideal for 90 W PoE++ PDs.
The transformers are optimised for 200 kHz, with a 36-72 V 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.
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