FL7740中文资料PWM 控制器，恒定电压，初级侧调节实现功率因数校正数据手册ONSEMI规格书

描述 Description

The FL7740 provides accurate CV (Constant Voltage) regulation with differentiated dynamic function to minimize overshoot and undershoot of output voltage in line and load transient condition. Standby power is less than 0.3 W for smart lighting application and power factor is higher than 0.9 even half load condition when enabling PF optimizer for wide output powerscalability.

特性 Features

• Internal start up JFET
• Fast start up and Low standby power consumption
• Accurate primary side regulation technique
• Low eBOM counts & precise CV regulation
• Dynamic CV regulation
• Stable operation with under 10% CV regulation in load transient
• PF optimizer
• Over 0.9 PF even at half load and univesal input condition

应用 Application

• Smart Lighting AC-DC Power
• Lighting Driver
• AC-DC Adapters, TVs, Monitors
• Lighting
• TV

简介

FL7740属于集成电路（IC）的ACDC转换器离线开关。由ONSEMI制造生产的FL7740AC DC 转换器，离线开关该系列是元器件级控制产品，用于构建将交流市电转换为直流电（通常电压大幅降低）的设备。集成和未集成系统主要开关元件的器件均包括在内。由于高输入输出电压比，以及此类系统中通常需要隔离，这些器件通常与外部变压器配合使用。尽管通常使用定制变压器来实现此用途，但也有许多专门用于此用途的库存产品，请参见“开关转换器，SMPS 变压器”标题。