DC-DC converter with integrated transformer assembly composed of transformer pair
First Claim
1. An integrated transformer assembly comprising:
- a first core member constituting a first magnetic path;
a second core member constituting a second magnetic path, the second magnetic path being separated from the first magnetic path, the first and second core members being physically separated from each other;
a common coil member having a first portion configured to be alternately wound, for each one electromagnetic turn, around the first core member and around the second core member, the first portion of the common primary coil member wound around the first core member being magnetically linked to the first magnetic path thereof so as to constitute a first primary coil, the first portion of the common primary coil member wound around the second core member being magnetically linked to the second magnetic path thereof so as to constitute a second primary coil, the first primary coil and the second primary coil being connected in series; and
a secondary coil member having a first secondary coil and a second secondary coil, the first and second secondary coils being arranged to be magnetically linked to the first and second magnetic paths of the first and second core members, respectively.
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Accused Products
Abstract
In an integrated transformer assembly, a common coil member has a first portion alternately wound, for each one electromagnetic turn, around the first core member and around the second core member. The first portion of the common primary coil member wound around the first core member is magnetically linked to the first magnetic path thereof so as to constitute a first primary coil. The first portion of the common primary coil member wound around the second core member is magnetically linked to the second magnetic path thereof so as to constitute a second primary coil. The first and second primary coils are connected in series. A secondary coil member has first and second secondary coils. The first and second secondary coils are arranged to be magnetically linked to the first and second primary coils of the common primary coil member, respectively.
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Citations
14 Claims
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1. An integrated transformer assembly comprising:
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a first core member constituting a first magnetic path; a second core member constituting a second magnetic path, the second magnetic path being separated from the first magnetic path, the first and second core members being physically separated from each other; a common coil member having a first portion configured to be alternately wound, for each one electromagnetic turn, around the first core member and around the second core member, the first portion of the common primary coil member wound around the first core member being magnetically linked to the first magnetic path thereof so as to constitute a first primary coil, the first portion of the common primary coil member wound around the second core member being magnetically linked to the second magnetic path thereof so as to constitute a second primary coil, the first primary coil and the second primary coil being connected in series; and a secondary coil member having a first secondary coil and a second secondary coil, the first and second secondary coils being arranged to be magnetically linked to the first and second magnetic paths of the first and second core members, respectively. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A DC to DC converter comprising:
an integrated transformer assembly comprising; a core constituting a magnetic path, the core comprising; a pair of first and second bases, each base having one surface, the first and second bases being separated from each other; a pair of first and second poles each arranged opposing the one surface of a corresponding one of the first and second bases to be magnetically coupled thereto, the first and second poles extending away from the one surface of a corresponding one of the first and second bases, the first and second poles being arranged opposing each other with a first gap therebetween, each of the first and second poles having a substantially semicircular cross section orthogonal to the magnetic path in a corresponding one of the first and second poles, the first and second poles with the gap collectively having one of a substantially circular cross section and a substantially ellipsoidal cross section, the one of the substantially circular cross section and the substantially ellipsoidal cross section being orthogonal to the magnetic path in each of the first and second poles; and a pair of pole members each arranged opposing the one surface of a corresponding one of the first and second bases to be magnetically coupled thereto, the second pole member extending away from the one surface of a corresponding one of the first and second bases, the second pole member at least partially surrounding the pair of first and second poles; the first base, the first pole and one of the pole members constituting a first core member, the second base, the second pole and the other of the pole members constituting a second core member, the first core member and the second core member being physically separated from each other; a primary coil member composed of a first primary coil and a second primary coil connected to each other in series, the first and second primary coils being collectively wound around the paired first and second poles, the first primary coil being magnetically linked to the magnetic path of the first pole, the second primary coil being magnetically linked to the magnetic path in the second pole; and a secondary coil member composed of a first secondary coil and a second secondary coil, the first and second secondary coils being wound around the first and second poles to be magnetically linked to the magnetic paths of the first and second poles, respectively, the first primary coil, the first secondary coil, and the core constituting a first transformer, the second primary coil, the second secondary coil, and the core constituting a second transformer; an inverter circuit provided with at least one switching element via which input DC power is supplied, the inverter circuit being configured to turn the at least one switching element on and off in accordance with a predetermined duty cycle to convert the input DC power into AC power, thus supplying the converted AC power to the first and second primary coils of the first and second transformers, the first and second transformers being configured to alternately execute a transformer operation and a reactor operation so as to generate secondary AC power in the first and second secondary coils of the integrated transformer assembly; and a rectifier configured to rectify the secondary AC power generated in the first and second secondary coils to thereby output DC power. - View Dependent Claims (14)
Specification