Planar transformers save space and weight

Pulse has a series of 30W planar transformers it claims offer a size and weight reduction of up to 60% in DC power supplies or in discrete power supply systems.

Pulse has a series of 30W planar transformers it claims offer a size and weight reduction of up to 60% in DC power supplies or in discrete power supply systems.

Primary applications for the new transformer series include telecomms power systems, industrial control systems, or automotive and heavy equipment applications where high package density is required.

Based on Pulse's planar technology, the transformers are formed from multilayer PCBs sandwiched between ferrite cores to make small, flat components ideally suited to PCB mounting, and compatible with all contemporary pick-and-place processes.

In addition to their small footprint and low profile (7.4mm), the highly efficient transformers are able to operate effectively at temperatures ranging from -40 to +130C, and offer significant performance benefits over traditional designs.

"Transformers must operate at higher frequencies to meet the demands of today's advanced computer and electronic equipment".

Vincent Pelletier, product marketing manager at Pulse remarked.

"Manufacturers are encountering significant magnetic design issues such as high AC losses and leakage inductances not found at lower operating frequencies.

With improved magnetic coupling and thermal management for high energy efficiency, Pulse's planar transformers solve these problems".

EMC compliant, with operating frequencies from 150 to 750kHz, and various turns ratios to suit a wide range of product applications, the transformers are available in both tray, and tape and reel packaging.

(This was Electronicstalk's Top Story on 4 January 2002).

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