Components

250W Frequency-Optimized Planar Transformers for Variety of Topologies

Premier Magnetics announced its PM-PTxxx Series of frequency-optimized planar transformers. The new line, offering models with ratings to 250W, for forward converter, full- or half-bridge and active clamp applications utilizing switching frequencies between 200kHz and 700kHz.

The company says that its proprietary layout techniques for the circuit board windings result in optimization of transformer impedance, and interwinding capacitance effects in the desired operating frequency range.

PT Series devices all provide excellent isolation (up to 2250Vdc), operate over a wide temperature range (-40°C to +125°C), demonstrate outstanding efficiency (up to 99%), and provide exceptional heat dissipation due to their planer construction compared to classic wire-wound transformers.

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“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.”

(Click on table above to enlarge)

Characteristics
  • Designed for forward converter, half/full bridge, active clamp
  • Switching frequency: 200kHz to 700kHz optimized
  • Power Range: 150W to 250W
  • Operating Temperature: -40°C to +125°C
  • Isolation Voltage: 2250Vdc at 1 second
  • Storage Temperature: -25°C to +100°C

The PM-PTxxx Series is priced at $1.60 – $3.25 in OEM quantities. Samples are in stock for immediate delivery. The series has a delivery time of 8 weeks, ARO for OEM quantities.

Premier Magnetics
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