NCP1345 Description
High-Voltage Quasi-Resonant Flyback Controller With USB-PD Optimization NCP1345 The NCP1345 is a highly integrated quasi−resonant flyback controller suitable for designing high−performance off−line USB−PD and USB Type−C power converters. The included dual−pin VCC architecture allows direct connection to the aux winding for simplified VCC management with a reduced parts count and increased performance.
NCP1345 Key Features
- Integrated High-Voltage Startup Circuit with Brownout Detection
- Integrated X2 Capacitor Discharge Capability
- Wide VCCL Range from 8 V to 38 V
- 150 V VCCH Pin for Connection to High-Voltage Aux Winding
- 36.5 V VCC Overvoltage Protection
- Primary Side Based Constant Output Current Limiting
- Abnormal Overcurrent Fault Protection for Winding Short Circuit
- Internal Temperature Shutdown
- Valley Switching Operation with Valley-Lockout for Noise-Free
- Rapid Frequency Foldback for Fast Reduction of Switching