DC-DC converter

An output stage of a switching DC-DC converter (110) includes a pair of transistors (220, 240) and a bias transistor (230) connected between the transistors (220, 240). A voltage regulator (210) generates a bias voltage to bias a control terminal of the bias transistor (230) with a fixed bias voltag...

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Bibliographische Detailangaben
Hauptverfasser:	PARTHASARATHY HARIKRISHNA, VEERAMREDI SRINIVAS V, SUBRAMANIAM MURUGESH P
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:	An output stage of a switching DC-DC converter (110) includes a pair of transistors (220, 240) and a bias transistor (230) connected between the transistors (220, 240). A voltage regulator (210) generates a bias voltage to bias a control terminal of the bias transistor (230) with a fixed bias voltage. The voltage regulator (210) is operable in a full-power mode and a low-power mode. The voltage regulator (210) consumes larger current in the full-power mode than in the low-power mode. At low load currents, the voltage regulator (210) is operated in the low-power mode when both the transistors in the pair of transistors (220, 230) are off, and in the full-power mode otherwise.