NCP1681 Overview
Key Features
- Totem Pole PFC Topology Eliminates Input Diode Bridge Enabling Very High Efficiency & Compact Design
- AC Line Monitoring Circuit & AC Phase Detection
- Brownout Detection
- Digital Loop Compensation
- Novel Current Sensing Scheme Providing Inductor Current Upslope and Downslope Sensing
- PFCOK Indicator
- Skip/Standby Mode for Optimizing Light Load Performance
- Near-Unity Power Factor in All Operating Modes Multi-Mode Operation
- Continuous Conduction Mode (CCM) in Heavy-Load Conditions
- Critical Conduction Mode (CrM) in Light & Medium Load Conditions
