Output current sensing method in discontinuous DC-to-DC voltage converter

The present invention refers to high- voltage generators, in particular to a step-down DC-to-DC converter circuit (buck converter) for supplying a DC output voltage U out which may e.g. be used in a voltage supplying circuitry of an X-ray radiographic imaging system. According to the invention, the...

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Bibliographische Detailangaben
Hauptverfasser:	BLEUKX MARC M A, REXHAUSEN WOLFGANG
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 ELECTRICITY GENERATION
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Beschreibung
Zusammenfassung:	The present invention refers to high- voltage generators, in particular to a step-down DC-to-DC converter circuit (buck converter) for supplying a DC output voltage U out which may e.g. be used in a voltage supplying circuitry of an X-ray radiographic imaging system. According to the invention, the peak value of the buck converter's storage inductor current I L is controlled by a control circuit [mu]C' which regulates the on- time delta t o n of a semiconductor switch S in the feeding line of this storage inductor L. As a result thereof, an output current sensor CS, which is commonly used in today's buck converter designs, becomes redundant.