Multi-winding planar transformer made on PCB

• Main Author: BAI YUXIN
• Format: Patent
• Language: Chinese; English
• Published: 16.07.2014
• Subjects: BASIC ELECTRIC ELEMENTS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; INDUCTANCES; MAGNETS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS; PRINTED CIRCUITS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES; TRANSFORMERS

The utility model discloses a multi-winding planar transformer made on a PCB. The multi-winding planar transformer made on the PCB comprises six single-piece PCB layers, EI type planar magnetic cores arranged on all the PCB layers and four windings arranged among all the PCB layers, all the PCB layers are insulated from one another, three through holes are formed in the middle of each PCB layer in the width direction in sequence, the EI type planar magnetic cores are mounted in the three through holes, four circular metallized wire holes with equal distance are formed in the two sides of each PCB layer in the width direction, one of the four windings inputs, the other three windings output, and the wires of the windings penetrate through the wire holes. The multi-winding planar transformer made on the PCB is mutually formed by the planar magnetic cores of small sizes and windings formed by corresponding wires on the PCB, a winding framework of a traditional transformer is not needed, heat dissipation is good,