Medium-power planar transformer provides high efficiency
Vishay Intertechnology has introduced a planar transformer offering power from 1 to 3kW in a compact 70x53x22mm size. Compared to devices built on traditional winding technology, the Vishay Sfernice PLA51 delivers the same power transfer / conversion while offering higher efficiency and a lower weight and profile.
The device is optimised for DC/DC power converters, on-board chargers for electric vehicles, UPS, power control cooling units, and solar inverters. In these applications, the PLA51's high typical efficiency of > 99 % typical reduces losses, while its low profile of 22mm saves space in subassemblies. In addition, the transformer's reduced weight of 170g is a key parameter for power supplies in avionics applications.
Providing excellent repeatability, the PLA51 features a frequency range of 50 to 400kHz and operates over a temperature range from -55 to +125 °C with heatsink dissipation. Offered in full-bridge, half-bridge, and forward power supply topologies, the transformer features tapped outputs for fast and easy connection. This RoHS-compliant device is also available in custom designs upon request.
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