Transcription of NCP1654 - Power Factor Controller for Continuous ...
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NCP1654 - Power Factor Controller for Continuous ...
NCP1654 . Power Factor Controller for Compact and Robust, Continuous Conduction Mode Pre-Converters The NCP1654 is a Controller for Continuous Conduction Mode (CCM) Power Factor Correction step up pre converters. It controls the Power switch conduction time (PWM) in a fixed frequency mode 8. and in dependence on the instantaneous coil current. Housed in a SO8 package, the circuit minimizes the number of 1. external components and drastically simplifies the PFC SO 8. implementation. It also integrates high safety protection features that D SUFFIX. make the NCP1654 a driver for robust and compact PFC stages like CASE 751. an effective input Power runaway clamping circuitry. MARKING DIAGRAM. Features IEC61000 3 2 Compliant 8. Average Current Continuous Conduction Mode 54 Bxx ALYW. Fast Transient Response G. Very Few External Components 1. Very Low Startup Currents (< 75 mA) xx = 65, 133 or 200.
NCP1654 www.onsemi.com 5 DETAILED PIN DESCRIPTIONS Pin Symbol Name Function 1 GND Ground − 2 Vin Multiplier Voltage This pin provides a voltage VM for the PFC duty cycle modulation.
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