| 摘要 |
A transformer, or a method of making a transformer, comprises: interleaving a first portion of a primary winding with a first portion of a secondary winding in a first layer; interleaving a second portion of the primary winding with a second portion of the secondary winding in a second layer and arranging the second layer on top of the first layer and interconnecting the primary and secondary portions, respectively though connections through the central region of the windings. The said interconnections may involve contact pads 525, 520, located in the centre of the windings, which may also be used for centre-tap connections for the primary and/or secondary windings of the transformer. Further contact pads 500, 505, 510, 515, external to the windings, may be provided for the respective terminals of the primary and secondary windings. A plurality of first and second layers may be stacked together and interconnected to form a transformer. The transformer may be formed as a compact PCB or integrated circuit micro-transformer component which is suitable for use in power converter arrangements such as a push-pull power converter system. |
