NCP1616 Datasheet | onsemi

High Voltage High Efficiency Power Factor Correction Controller The NCP1616 is a high voltage PFC controller designed to drive PFC boost stages based on an innovative Current Controlled Frequency Foldback (CCFF) method. In this mode, the circuit operates in critical conduction mode (Cr M) when the inductor current exceeds a programmable value. When the current is below this preset level, the NCP1616 linearly decays the frequency down to a minimum of about 26 k Hz at the sinusoidal zero- crossing. CCFF maximizes the efficiency at both nominal and light load. In particular, the standby losses are reduced to a minimum. Innovative circuitry allows near- unity power factor even when the switching frequency is reduced. The integrated high voltage start- up circuit eliminates the need for external start- up ponents and consumes negligible power during normal operation. Housed in a SOIC- 9 package, the NCP1616 incorporates the Features necessary for robust and pact PFC stages, with few external ponents. General Features - High Voltage Start- Up Circuit with Integrated Brownout Detection - Input to Force Controller into Standby Mode - Skip Mode Near the Line Zero Crossing - Fast Line / Load Transient pensation - Valley Switching for Improved Efficiency - High Drive Capability: - 500 m A/+800 m A - Wide VCC Range: from 9.5 V to 28 V - Input Voltage Range Detection - Input X2 Capacitor Discharge Circuitry - This is a Pb and Halogen Free Device Safety Features - Soft Overvoltage Protection - Line Overvoltage Protection - Overcurrent Protection - Open Pin Protection for FB and STDBY/FAULT Pins - Internal Thermal Shutdown - Latch Input for OVP - Bypass/Boost Diode Short Circuit Protection - Open Ground Pin Protection Typical Applications - PC Power Supplies - Off Line Appliances Requiring Power Factor Correction - LED...