EFFICIENT BOOTSTRAPPING FOR DC-DC CONVERTERS

The circuits and methods described herein provide technical solutions for technical problems facing DC-DC converters. A self-timed active bootstrap driver may be used within a DC-DC converters to reduce or eliminate effects associated with passive bootstrap DC-DC converters. The self-timed active bo...

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Bibliographische Detailangaben
1. Verfasser:	Amin, Sally Safwat
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:	The circuits and methods described herein provide technical solutions for technical problems facing DC-DC converters. A self-timed active bootstrap driver may be used within a DC-DC converters to reduce or eliminate effects associated with passive bootstrap DC-DC converters. The self-timed active bootstrap driver improves or maximizes power efficiency by using available CMOS devices to sense the inductor node voltage Vx and using this information to turn ON the self-timed active bootstrap switch only at the falling edge of Vx node or when Vx close to "0," which ensures that BST switch is turned ON when HS switch is OFF and VxVBS or where both HS switch and the BST switch are ON at the same time, and therefore reduces or minimizers efficiency penalties and circuit component aging and reliability issues that may result from bootstrapping.