Integrated magnetics for soft switching converter
In an integrated magnetic component for a switched mode power converter, comprising two magnetic cores forming an 8-shaped core structure and at least two first electric winding wires, wherein at least one magnetic core is an E-core, at least one of the first electric winding wires is wound on a flange of the E-core.
1. Switching mode power converter including a transformer, a parallel resonant inductor, two output filter chokes, and an integrated magnetic component, where the switched mode power converter is a soft switching converter, the integrated magnetic component comprising:
two magnetic cores forming an 8-shaped core structure;
a first electric winding wire constituting a winding of a first output filter choke wound on a first flange of a first magnetic core,
the first electric winding wire further constituting a first secondary winding of the transformer wound on the second flange of the first magnetic core,
a supplementary first electric winding wire constituting windings of a second output filter choke wound on a first flange of the second magnetic core,
the supplementary first electric winding wire further constituting a second secondary winding of the transformer wound on the second flange of the second magnetic core, and
a second electric winding wire constituting a first primary winding of the transformer wound on the second flange of the first magnetic core,
a supplementary second electric winding wire constituting a second primary winding of the transformer wound on a second flange of the second magnetic core,
wherein,
the first magnetic core is an E-core, and the second magnetic core is an E-core of an I-core,
the first electric winding wires are connected to each other and the second electric winding wires are connected to each other, and
all windings are wound around the flanges of the magnetic cores such as to lead to a cancellation of flux in a common center leg of the magnetic cores.
2. The switched mode power converter according to claim 1 , wherein at least one of the electric winding wires is wound directly on one of the magnetic cores.
3. The switched mode power converter according to claim 1 , wherein the first electric winding wires are connected to each other by a first soldering joint and/or the second electric winding wires are connected to each other by a second soldering joint.
4. The switched mode power converter according to claim 1 , wherein the 8-shaped core structure comprises an air gap.
5. The switched mode power converter according to claim 4 , wherein the air gap is centrally located in the 8-shaped core structure.
6. The switched mode power converter according to claim 1 , wherein the 8-shaped core structure comprises a slanted edge.
7. The switched mode power converter according to claim 1 , wherein three windings are wound on each magnetic core.
8. A switched mode power converter including a transformer, a parallel resonant inductor, two resonant inductors, and an integrated magnetic component where the switched mode power converter is a LLC converter, the integrated magnetic component comprising:
two magnetic cores forming an 8-shaped core structure; and
a first electric winding wire constituting a winding of a first resonant inductor wound on a first flange of a first magnetic core,
the first electric winding wire further constituting a first primary winding of the transformer wound on a second flange of the first magnetic core,
a supplementary first electric winding wire constituting windings of a second resonant inductor wound on a first flange of a second magnetic core,
the supplementary electric winding wire further constituting a second primary winding of the transformer wound on the second flange of the second magnetic core, and
a second electric winding wire constituting a first secondary winding of the transformer wound on the second flange of the first magnetic core,
a supplementary second electric winding wire constituting a second secondary winding of the transformer wound on a second flange of the second magnetic core,
the first electric winding wires are connected to each other and the second electric winding wires are connected to each other,
wherein,
the first magnetic core is an E-core, and the second magnetic core is an E-core or an I-core, and
all windings are wound around the flanges of the magnetic cores such as to lead to a cancellation of flux in a common center leg of the magnetic cores.
9. The switched mode power converter according to claim 8 , wherein at least one of the electric winding wires is wound directly on one of the magnetic cores.
10. The switched mode power converter according to claim 8 , wherein the first electric winding wires are connected to each other by a first soldering joint and/or the second electric winding wires are connected to each other by a second soldering joint.
11. The switched mode power converter according to claim 8 , wherein the 8-shaped core structure comprises an air gap.
12. The switched mode power converter according to claim 11 , wherein the air gap is centrally located in the 8-shaped core structure.
13. The switched mode power converter according to claim 8 , wherein the 8-shaped core structure comprises a slanted edge.
14. The switched mode power converter according to claim 8 , wherein three windings are wound on each magnetic core.