Pulse Intros PA0369/PA0423 Power Transformers

Pulse Engineering Inc. (San Diego, CA) introduced a new series of 100W to 140W surface-mount planar transformers for high-density, isolated, dc/dc modules and discrete power supplies for use in telecom, datacom and industrial control applications. The new series is designed to meet either operational or basic insulation, 1,500Vdc isolation, and is optimized for frequencies between 200kHz to 500kHz. The transformers feature low resistance windings (<0.5 milliohms), ac-resistance performance and low leakage inductance (<0.4µH).

The first two transformers in the series are designed for use in active-clamp, forward-converter topologies operating from a wide-range telecom input voltage of 36V to 75V and providing a regulated 100W (3.3V/30A) output (PA0369) or a 140W (12V/11.6A) output (PA0423). Other versions are available for 5V/20A and 26V/4A outputs, as well as transformers for full-bridge, half-bridge and push-pull topologies. The transformer's package is compatible with all contemporary pick-and-place processes.

The new series is available in trays and tape-and-reel packaging, with prices starting at $2.85 for quantities of 100,000 for the PA0369, and $3.15 for quantities of 100,000 for the PA0423. Lead-time is four to six weeks. Volume discounts are available.