Planar transformers for 250W support 700kHz frequencies

March 21, 2019 // By Nick Flaherty
Planar transformers for 250W support 700kHz frequencies
Premier Magnetics has launched a series of frequency-optimised planar transformers with ratings to 250W.

The PM-PTxxx series is designed for forward converter, full/half bridge and active clamp applications utilizing switching frequencies between 200 KHz and 700 KHz. Proprietary layout techniques for the circuit board windings result in optimization of transformer impedance and interwinding capacitance effects in the desired operating frequency range.

The PT Series devices all provide isolation up to 2250 VDC, operate over a wide temperature range of -40ºC to +125ºC, support efficiency up to 99% and provide improved heat dissipation thorugh the planer construction vs. classic wire-wound transformers.

“Customer demand was the driving force in the development of these planar transformers,” said Dennis Earley, Premier Magnetics’ General Manager. “Our designs are optimized to meet their requirements for higher power density, higher-efficiency power conversion in switch mode power supplies and in electric vehicle, industrial, aerospace and solar applications. The addition of planar transformers fills a market void and makes the PM Power Product line one of the most complete in the industry.”

The transformers are priced at $1.60 - $3.25 in OEM quantities and samples are in stock.


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