POWER-FACTOR IMPROVEMENT CIRCUIT, AND SWITCHING POWER-SUPPLY DEVICE USING THE SAME

• Main Author: SUGIMOTO MASATOSHI
• Format: Patent
• Language: English; Japanese
• Published: 04.04.2019
• Subjects: 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

To provide a power-factor improvement circuit capable of properly maintaining a loop gain while maintaining current detection accuracy even when inputting a different AC input voltage, and to provide a switching power-supply device using the same.SOLUTION: There are provided an input voltage detecti...