NCP1616中文资料功率因数控制器，高电压，有源 X2数据手册ONSEMI规格书

描述 Description

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(CrM) when the inductor current exceeds a programmable value. When the current is below this preset level, the NCP1616 linearly decays the frequency down to minimum of about 26kHz 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 components and consumes negligible power during normal operation. Housed in a SOIC-9 package, the NCP1616 incorporates the features necessary for robust and compact PFC stages, with few external components.

特性 Features

• High Voltage Start-Up Circuit
• Improved efficiency at light load and fast startup time
• Critical conduction mode with current controlled frequency foldback
• Optimizes conversion efficiency across load range
• Integrated Input Filter Capacitor (X2) Discharge Circuitry
• Improved light load efficiency and elimination of external resistors
• Dynamic Response Enhancer
• Improved transient response for line and load steps
• Soft Overvoltage Protection
• Reduces acoustic noise and stress in the event of an overvoltage fault
• -500 mA/+800 mA Drive Capability
• Supports wide range of MOSFETs and power levels
• AC Line Brownout Detection
• Protects boost stage power components during line fault conditions

应用 Application

• Off-line power supplies
• Lighting Ballast
• LED Lighting Drivers and Power Supplies
• All-In-One Computers
• High Powered Adapters
• Flat TV / LED-TV / LCD-TV / Plasma

简介

NCP1616属于集成电路（IC）的PFC（功率因数校正）。由制造生产的NCP1616PFC（功率因数校正）功率因数校正 (PFC) 是用于调整交流电路中的电压和电流之间的相位角，使之趋近于零的半导体器件。不同模式包括平均电流、边界导通、连续导通、临界导通、电流控制式频率折返、不连续和不连续导通，开关频率从 6 kHz 至 1.7 MHz 可调。