CIRCUIT FOR A SWITCHING POWER SUPPLY

CIRCUIT FOR A SWITCHING POWER SUPPLY

An output transistor is made to perform switching operation synchronous with a clock signal in a current mode based on an error voltage, which is commensurate with the difference between a feedback voltage commensurate with an output voltage and a reference voltage, and a slope voltage, which is com...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Hauptverfasser: Wachi, Takatsugu, TAN, George G
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:An output transistor is made to perform switching operation synchronous with a clock signal in a current mode based on an error voltage, which is commensurate with the difference between a feedback voltage commensurate with an output voltage and a reference voltage, and a slope voltage, which is commensurate with a current that passes through the output transistor. Based on the result of comparison of the error voltage with a skip threshold voltage, a skip signal is generated. When the skip signal turns to high level in response to a light load, the switching operation is stopped. Thereafter, when the skip signal turns back to low level, the output transistor is turned on asynchronously with the clock signal.