Electricity: electrical systems and devices – Housing or mounting assemblies with diverse electrical... – For electronic systems and devices
Patent
1993-05-20
1995-11-21
Sparks, Donald A.
Electricity: electrical systems and devices
Housing or mounting assemblies with diverse electrical...
For electronic systems and devices
174 524, 257786, 257924, 307150, 333185, 336 82, 336 83, 336 98, 336200, 336145, 336182, 336225, 336223, 365226, 365229, H05K 702, H02J 1700, H01F 504
Patent
active
054693349
ABSTRACT:
A switching power supply embodiment of the present invention includes a plastic leaded chip carrier (PLCC) that has two rectangular holes joined by a channel on the bottom surface that allow the PLCC to be surface mounted on a printed circuit board over a ferrite U-core section. A ferrite I-core section caps the ends of the U-core section above the top surface of the PLCC. A wire frame within the PLCC provides for several individual parallel conductor segments that pass between the two holes to rows of surface mount pins on opposite edges of the PLCC. Traces on the printed circuit board complete the connection of these conductor segments to form a primary winding of a transformer. A secondary winding is similarly constructed using pins on another edge of the PLCC. A switched mode power supply integrated circuit chip is molded directly into the body of the PLCC nearer the primary winding conductor and chops current flowing in the primary winding according to a voltage derived from the current that results in the secondary winding.
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Power Integrations, Inc.
Sparks Donald A.
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