NCP1605BG EPFC controller

NCP1605BG - Enhanced, High Voltage and Efficient Standby Mode, Power Factor Controller, SOP-16

General Features

Near−Unity Power Factor
Fixed Frequency, Discontinuous Conduction Mode Operation
Critical Conduction Mode Achievable in Most Stressful Conditions
Lossless High Voltage Current Source for Startup
Soft Skip Cycle for Low Power Standby Mode
Switching Frequency up to 250 kHz
Synchronization Capability
Fast Line / Load Transient Compensation
Valley Turn On
High Drive Capability: −500 mA / +800 mA
Signal to Indicate that the PFC is Ready for Operation (“pfcOK” Pin)
VCC range: from 10 V to 20 V
Follower Boost Operation
Two VCC Turn−On Threshold Options: 15 V for NCP1605 & NCP1605B; 10.5 V for NCP1605A
These Devices are Pb−Free, Halogen Free/BFR Free and are RoHS Compliant


Safety Features

Output Under and Overvoltage Protection
Brown−Out Detection
Soft−Start for Smooth Startup Operation
Overcurrent Limitation
Zero Current Detection Protecting the PFC stage from Inrush Currents
Thermal Shutdown
Latched Off Capability


Typical Applications

PC Power Supplies
All Off Line Appliances Requiring Power Factor Correction