Planar platform boosts throughput power for SMT transformers
Pulse Electronics Corp. has rolled out a planar platform that claims to increase throughput power for its planar SMT transformers by 50 per cent over transformers of comparable size to deliver up to 800W of power capability. According to the company, the transformers are used for isolation and voltage conversion for switched mode power supplies in datacom and intermediate bus converter applications.
The PH9278NL planar transformer is built on Pulse's ER25+ platform and can be customized depending on the application. The platform measures 33.5 x 26.8 x 18.3mm and delivers 50 per cent greater power than transformers built on an ER28 platform, which measures 35.5 x 30.5 x 12.6mm, detailed the company. The increased power is achieved by increasing the effective cross-sectional area of the core by 40 per cent. This results in lower core losses for a given number of winding turns. Additionally, copper losses can be reduced by removing some winding turns. The cost-effective flat coil windings have 50 per cent lower direct current resistance compared to multilayer PCB technology. The core design allows for a compact inter-connection and termination of the winding elements.
Pulse's planar transformers are RoHS compliant and meet standard EIA481 requirements. They're available in tape-and-reel packaging. Lead time is eight weeks. The price ranges from $3.75 to $4.95 for quantities up to 50,000 pieces. Pricing varies according to order configuration and destination. Datasheet: http://productfinder.pulseeng.com/products/datasheets/P729.pdf
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