San Diego - Pulse says its Prism series planar-transformer platform reduces componentry size by 40 percent compared with conventional wirewound magnetics. The units are packaged in a footprint of 29.5 x 25.4 mm and stand 9.3 to 10.4 mm high.
The high-frequency transformers are designed for Linear Technology Corp.'s LT1950, LTC3722, LT1725 and LTC1922 ICs, which compete with dc/dc power supply modules, said John Gallagher, field applications engineer for Pulse. The transformers can be used in forward, push-pull, half-bridge and full-bridge power supply topologies, Gallagher said.
The double-interleave PA0526 and PA0550 Prism units offer higher efficiency, lower direct-current resistance and lower leakage inductance; the single-interleave PA0442 and PA0576 are lower-cost models. Targeting datacom, telecom and industrial apps, the transformers are said to offer low ac losses and repeatable parasitics for resonant-based designs. The series is available in 15 winding configurations. Units are specified for up to 250 watts; the frequency range is 200 to 700 kHz. The series supports inputs from 18 to 75 Vdc.
Available in trays, the transformers start at $3 each in quantities of 100,000. Delivery is four to six weeks.
Call (858) 674-8100