DC/DC converter

A DC/DC converter includes a switching element connected to an input voltage so as to be turned on/off, a driving circuit arranged to perform ON/OFF control of the switching element, an inductor arranged to flow current controlled by the switching element, a smoothing capacitor connected to the indu...

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Bibliographische Detailangaben
1. Verfasser:	Guan, Shidong
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:	A DC/DC converter includes a switching element connected to an input voltage so as to be turned on/off, a driving circuit arranged to perform ON/OFF control of the switching element, an inductor arranged to flow current controlled by the switching element, a smoothing capacitor connected to the inductor so as to perform rectifying operation together with the inductor, an oscillator arranged to generate a rectangular wave signal for operating the driving circuit, and an output current detector arranged to detect output detection current flowing in the switching element or the inductor. The oscillator generates the rectangular wave signal at a fixed oscillation frequency when the output detection current is a predetermined value or larger, while it generates the rectangular wave signal at an oscillation frequency lower than the fixed oscillation frequency and proportional to the output detection current when the output detection current is smaller than the predetermined value.