Abstract: A low profile electromagnetic component assembly for a circuit board such as a power inductor includes a first shaped magnetic core piece comprising a bottom surface for seating upon the circuit board, a top surface opposing the bottom surface, and a groove defined on the top surface. A conductive coil winding includes first and second terminal sections and a center main winding section extending between the first and second terminal sections. The center main winding section comprises an elongated strip of conductor having a thickness oriented extend to perpendicular to a plane of the circuit board. The terminal sections define a different cross sectional area of conductor than in the center main winding section.

Abstract: A magnetic core structure for an electromagnetic component includes a first magnetic core piece having a planar section and a plurality of posts extending perpendicularly to and projecting from the planar section, and a second, L-shaped magnetic core piece assembled with the first piece and in abutting contact with the plurality of posts. The component also includes a plurality of windings respectively corresponding to each phase of a DC multi-phase power system. The component may be one of a transformer or inductor component and may be included in a DC/DC power converter application having high power density and improved efficiency.

Abstract: A low profile electromagnetic component assembly for a circuit board such as a power inductor includes a first shaped magnetic core piece comprising a bottom surface for seating upon the circuit board, a top surface opposing the bottom surface, and a groove defined on the top surface. A conductive coil winding includes first and second terminal sections and a center main winding section extending between the first and second terminal sections. The center main winding section comprises an elongated strip of conductor having a thickness oriented extend to perpendicular to a plane of the circuit board. The terminal sections define a different cross sectional area of conductor than in the center main winding section.

Abstract: LED lamp systems as described herein include a dimmer switch and a bleeder circuit. The bleeder circuit provides a bleeder current to management voltage and to prevent the dimmer switch from turning off prematurely. The bleeder circuit may monitor the AC input voltage outputted by the dimmer switch. When the AC input voltage is less than a first threshold, the bleeder circuit provides a bleeder current. When the AC input voltage is greater than a second threshold, the bleeder circuit adjusts the bleeder current to less than a predetermined level.

Abstract: LED lamp systems as described herein include a dimmer switch and a bleeder circuit. The bleeder circuit provides a bleeder current to management voltage and to prevent the dimmer switch from turning off prematurely. The bleeder circuit may monitor the AC input voltage outputted by the dimmer switch. When the AC input voltage is less than a first threshold, the bleeder circuit provides a bleeder current. When the AC input voltage is greater than a second threshold, the bleeder circuit adjusts the bleeder current to less than a predetermined level.