MOLDED DC/DC CONVERTER

PROBLEM TO BE SOLVED: To provide a DC/DC converter, which can effectively reduce radiation noise on the rear surface side of a substrate, without having to provide a ground pattern on the rear surface of the substrate or an intermediate layer and can be reduced in size and thickness. SOLUTION: In a...

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Hauptverfasser:	TAKAHASHI MASAMI, OZAKI YUMIKO
Format:	Patent
Sprache:	eng
Schlagworte:	APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC,OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWERSUPPLY SYSTEMS CONTROL OR REGULATION THEREOF CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER CONVERSION OR DISTRIBUTION OF ELECTRIC POWER ELECTRICITY GENERATION
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a DC/DC converter, which can effectively reduce radiation noise on the rear surface side of a substrate, without having to provide a ground pattern on the rear surface of the substrate or an intermediate layer and can be reduced in size and thickness. SOLUTION: In a molded DC/DC converter, DC/DC converter circuit parts 40 which includes a transformer T are mounted on the parts mounting surface of a printed wiring board 31 on one side of the board 31. The part-mounting surface of the board 31 is molded with a composite ferrite 50 prepared by mixing ferrite powder with a resin, and at the same time, the board 31 is constituted of a double-sided copper clad laminated substrate, which is formed by laminating fiber-reinforced resin layers containing a mixed ferrite powder upon one another. On the edge sections of the wiring board 31, surface mounted terminal electrodes 34 are formed.