Electronic Products & Technology

High efficiency planar transformer serves smaller space dc-dc conversion designs

Stephen Law   

Electronics Power Supply / Management density Planar power transformers

BOURNS Model PLN0xx-ED21 Series planar transformers provide high volumetric power density, low loss and enhanced efficiency in a low-height profile design. The forward converter transformers deliver high volumetric power density, low loss and improved efficiency in a compact, low-height profile design. Units deliver greater reliability due to their enhanced thermal conduction and heat dissipation properties. Product increases design flexibility and delivers efficiency and power density advantages over conventional wirewound transformer designs due to significantly reduced ac resistance losses. Providing from 48 watts up to 70 watts of output power in applications with input voltages ranging from 33 to 57Vdc and a switching frequency of 250 kHz, unit has low leakage inductance from 0.29μH to 0.60μH and a volt-second time of 81.6 (V-µsec).

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