NCP1345数据手册ONSEMI中文资料规格书

描述 Description

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.The NCP1345 also features a precise, primary side based output current limiting circuit to ensure a constant output current limit regardless of programmed output voltage, or nameplate output power.

特性 Features

• 150-V Wide Range Vcc Architecture
• Reduces external part counts
• Auto-Tuning Skip
• Adjusts skip entry based on VOUT
• Rapid Frequency Foldback
• Improved Light Load Efficiency
• Constant Output Current Limiting
• Meet LPS(Limited Power Source) requirements in PPS
• SR Spike Reduction Circuitry (Adaptive Gate Drive)
• Enables Lower Voltage Rated SR FETs
• Improved Frequency Jittering
• Softer EMI Signature
• 350 KHz high frequency QR
• Enable smaller magnetic designs
• Internal 700 V Startup w X2 discharge
• Improve standby power

应用 Application

• USB PD
• Phone, Tablet, & Notebook Chargers
• Aftermarket USB PD Multi-Port Chargers
• USB C Enabled Wall Sockets