SWITCHING POWER CIRCUIT AND ELECTRONIC APPARATUS USING THE SAME

PROBLEM TO BE SOLVED: To provide a switching power supply circuit that is of a current control system, depends on an output voltage and uses an oscillation circuit, capable of suppressing oscillation of an output voltage during a soft start while suppressing a cost increase.SOLUTION: An error amplif...

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1. Verfasser:	IKUTA YOSHINORI
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:	PROBLEM TO BE SOLVED: To provide a switching power supply circuit that is of a current control system, depends on an output voltage and uses an oscillation circuit, capable of suppressing oscillation of an output voltage during a soft start while suppressing a cost increase.SOLUTION: An error amplifier EA10 into which a soft start voltage Vss, a reference voltage Vref and a feedback voltage Vadj are input switches a gain according to an output of a comparator 8 that compares between the soft start voltage Vss and the reference voltage Vs.