The TDK Group introduces a new EPCOS transformer for the second enhanced Power over Ethernet (PoE ++) with IEEE 802.3bt standard and 60W output power. The new B82806D0060A** series of transformers are available in four models with different turns ratios and output voltages of 3.3 V, 5 V, 12 V and 24 V, respectively. The new series of transformers are surface mount components measuring 30 mm x 22 mm x 11.4 mm and are suitable for a wide temperature range (-40 ° C to +125 ° C). These transformers are RoHS compliant and have electrical insulation performance in accordance with UL 1446 130 (B) and pass through high voltage tests (1500 V AC / 50 Hz high voltage for 1 second) on the primary and secondary sides without breakdown. It is particularly worth mentioning that the DC resistance of these transformers is very small, as small as 3.5 mΩ, depending on the model. This feature can significantly improve the efficiency of the transformer, making the new transformer suitable for the active clamp forward converter topology. The typical switching frequency of a transformer is 250 kHz. At present, more and more devices have LAN connection functions to facilitate communication connections. The simplest solution is to power the device over a LAN cable (Power over Ethernet), eliminating the need for a separate power supply unit. Most existing systems use dual-strand port outputs that comply with IEEE 802.3af (PoE) and IEEE 802.3at (PoE+) standards, with output powers of 15 W and 30 W, respectively. The new EPCOS transformers are specifically designed to provide high power output to the device using a four-port output compliant with the IEEE 802.3bt (PoE++) standard. Typical applications for new series of transformers include video and POS systems, as well as building management systems such as lighting controllers, fire alarm systems or access control systems. the term Power over Ethernet (PoE): A system for simultaneous data transmission and power over a single LAN cable main application High-load power supplies, such as video and POS systems, and building management systems such as lighting controllers, fire alarm systems or access control systems Main features and benefits Output power up to 60 W DC resistance as low as 35 mΩ
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