POWER SUPPLY CIRCUIT

PROBLEM TO BE SOLVED: To provide a power supply circuit capable of efficiently reducing background noise and EMI.SOLUTION: The power supply circuit includes: a mounting substrate (1); a semiconductor switching element (10) disposed on the mounting substrate (1); passive components (20, 30) disposed...

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Bibliographische Detailangaben
Hauptverfasser:	HIRAGA NORIAKI, INAGAKI RYOSUKE
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 CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS CONTROL OR REGULATION THEREOF CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER CONVERSION OR DISTRIBUTION OF ELECTRIC POWER ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR ELECTRICITY GENERATION MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS PRINTED CIRCUITS
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a power supply circuit capable of efficiently reducing background noise and EMI.SOLUTION: The power supply circuit includes: a mounting substrate (1); a semiconductor switching element (10) disposed on the mounting substrate (1); passive components (20, 30) disposed on the mounting substrate (1) and connected between main electrodes of the semiconductor switching element (10); a mounting substrate opening part (8) which is disposed in a current-carrying loop (18) constituted of the semiconductor switching element (10) and the passive components (20, 30) and is opened in the mounting substrate (1); and local shielding means for suppressing a change in magnetic flux Φ which is generated in the current-carrying loop by switching of the semiconductor switching element (10).