Apraksts

• Critical Conduction Mode
• PFC Controller Utilizing a
• Transconductance Error
• Amplifier
• The NCP1608 is an active power factor correction (PFC)
• controller specifically designed for use as a pre−converter in ac−dc
• adapters, electronic ballasts, and other medium power off−line
• converters (typically up to 350 W). It uses critical conduction mode
• (CrM) to ensure near unity power factor across a wide range of input
• voltages and output power. The NCP1608 minimizes the number of
• external components by integrating safety features, making it an
• excellent choice for designing robust PFC stages. It is available in
• a SOIC−8 package.
• General Features
• • Near Unity Power Factor
• • No Input Voltage Sensing Requirement
• • Latching PWM for Cycle−by−Cycle On Time Control (Voltage
• Mode)
• • Wide Control Range for High Power Application (>150 W) Noise
• Immunity
• • Transconductance Error Amplifier
• • High Precision Voltage Reference (±1.6% Over the Temperature
• Range)
• • Very Low Startup Current Consumption (≤ 35 A)
• • Low Typical Operating Current Consumption (2.1 mA)
• • Source 500 mA/Sink 800 mA Totem Pole Gate Driver
• • Undervoltage Lockout with Hysteresis
• • Pin−to−Pin Compatible with Industry Standards
• • This is a Pb−Free and Halide−Free Device

Parametri

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