Especificações Técnicas

FEATURES FOR THE UCC3818 CONTROLS BOOST PREREGULATOR TO NEAR-UNITY POWER FACTOR LIMITS LINE DISTORTION WORLD WIDE LINE OPERATION OVER-VOLTAGE PROTECTION ACCURATE POWER LIMITING AVERAGE CURRENT MODE CONTROL IMPROVED NOISE IMMUNITY IMPROVED FEED-FORWARD LINE REGULATION LEADING EDGE MODULATION 150-µA TYPICAL START-UP CURRENT LOW-POWER BICMOS OPERATION UP TO 18-V OPERATION FREQUENCY RANGE 6 KHZ TO 220 KHZ DESCRIPTION FOR THE UCC3818 THE UCCX817 AND UCCX818 FAMILY PROVIDES ALL THE S NECESSARY FOR ACTIVE POWER FACTOR-CORRECTED PREREGULATORS. THE CONTROLLER ACHIEVES NEAR-UNITY POWER FACTOR BY SHAPING THE AC INPUT LINE CURRENT WAVEFORM TO CORRESPOND TO THAT OF THE AC INPUT LINE VOLTAGE. AVERAGE CURRENT MODE CONTROL MAINTAINS STABLE, LOW DISTORTION SINUSOIDAL LINE CURRENT. DESIGNED IN TEXAS INSTRUMENT-S BICMOS PROCESS, THE UCCX817 AND UCCX818 OFFERS NEW FEATURES SUCH AS LOWER START-UP CURRENT, LOWER POWER DISSIPATION, OVERVOLTAGE PROTECTION, A SHUNT UVLO DETECT CIRCUITRY, A LEADING-EDGE MODULATION TECHNIQUE TO REDUCE RIPPLE CURRENT IN THE BULK CAPACITOR, AND AN IMPROVED, LOW-OFFSET (±2-MV) CURRENT AMPLIFIER TO REDUCE DISTORTION AT LIGHT LOAD CONDITIONS. UCC3818D CI CONTROLADOR DE PFC 10.5/10V UVLO MAIORES DETALHES DE UCC3818D NO SITE DO FABRICANTE: HTTPS://WWW.TI.COM/LIT/DS/SYMLINK/UCC3818.PDF?TS=1659107913217&REF_URL=HTTPS%253 TAGS DE UCC3818D: UCC3818D, UCC3818AD, 3818D, CI 3818, UCC2817, UCC2818, UCC3817, UCC3818, SWITCHING CONTROLLERS RESONANT POWER SUPPLY CONTROL IC, PMIC - POWER MANAGEMENT ICS, DIGITAL CONTROLLER FOR HIGH-EFFICIENCY RESONANT POWER SUPPLY, TEA1995T DUAL LLC RESONANT SR CONTROLLER, TEA19162, CI PFC DE FONTE ATX, CI PARA PFC FONTE ATX, CI PFC, PFC IC, TEA1995T, CI PFC DE FONTE ATX, CI PARA PFC FONTE ATX, CI PFC, PFC IC, TEA1995T

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