THIN-FILM INDUCTOR, POWER SUPPLY CHANGEOVER CIRCUIT, AND CHIP

This application provides a thin film inductor. The thin film inductor includes a plurality of layers of magnetic thin films, the plurality of layers of magnetic thin films include at least a first magnetic thin film and a second magnetic thin film that are adjacent, the first magnetic thin film is...

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Bibliographische Detailangaben
Hauptverfasser:	ZHU, Yongfa, YANG, Shijun, YANG, Heqian, CHEN, Wei
Format:	Patent
Sprache:	eng ; fre ; ger
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 BASIC ELECTRIC ELEMENTS CONTROL OR REGULATION THEREOF CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER CONVERSION OR DISTRIBUTION OF ELECTRIC POWER ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR ELECTRICITY GENERATION INDUCTANCES MAGNETS SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES SEMICONDUCTOR DEVICES TRANSFORMERS
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Beschreibung
Zusammenfassung:	This application provides a thin film inductor. The thin film inductor includes a plurality of layers of magnetic thin films, the plurality of layers of magnetic thin films include at least a first magnetic thin film and a second magnetic thin film that are adjacent, the first magnetic thin film is nested in the second magnetic thin film, and a relative magnetic permeability of the first magnetic thin film is less than a relative magnetic permeability of the second magnetic thin film, and a difference between the relative magnetic permeability of the first magnetic thin film and the relative magnetic permeability of the second magnetic thin film is greater than or equal to a first threshold, where when a magnetic induction intensity of the second magnetic thin film reaches a saturated magnetic induction intensity of the second magnetic thin film, a magnetic induction intensity of the first magnetic thin film is less than or equal to a saturated magnetic induction intensity of the first magnetic thin film. Use of this application can avoid a problem of a sharp decrease in an inductance of the thin film inductor caused when the first magnetic thin film is easily magnetically saturated. Additionally, this application further provides a corresponding power conversion circuit and chip.