Step-down converter

This application discloses a step-down converter for converting a DC input voltage into a DC output voltage. The step-down converter includes a DC input circuit having a positive input terminal (IN +)and a negative input terminal (IN ) and configured to provide an DC input voltage (Vi); a converter...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	YONGCHANG DAI, SHENGDIE LIN
Format:	Patent
Sprache:	chi ; 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 ELECTRIC HEATING ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR ELECTRICITY GENERATION
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Beschreibung
Zusammenfassung:	This application discloses a step-down converter for converting a DC input voltage into a DC output voltage. The step-down converter includes a DC input circuit having a positive input terminal (IN +)and a negative input terminal (IN ) and configured to provide an DC input voltage (Vi); a converter circuit (30) configured to convert the DC input voltage (Vi) into a DC output voltage (Vo); a DC output circuit having a positive output terminal (OUT+), a negative output terminal (OUT-), and an output capacitor (C5) connected between the positive output terminal (OUT+) and the negative output terminal (OUT-); a switching device (IC) having a first switch terminal (D) connected to the positive input terminal (IN+) and a second switch terminal (CS) connected to the negative input terminal (IN-)via a charging diode (D1); a charging inductor (L1); and a return circuit (33) varying with frequency and configured to connect the positive output terminal (OUT+) with the power terminal (Vcc) of the switching device (IC) to