描述 Description

The FAN7530 is an active power factor correction (PFC) controller for the boost PFC applications that operates in critical conduction mode (CRM). It uses the voltage mode PWM that compares an internal ramp signal with the error amplifier output to generate MOSFET turn-off signal. Because the voltage mode CRM PFC controller does not need the rectified AC line voltage information, it can save the power loss of the input voltage sensing network necessary for the current mode CRM PFC controller.
FAN7530 provides many protection functions such as over voltage protection, open-feedback protection, over current protection, and under-voltage lockout protection. The FAN7530 can be disabled if the INV pin voltage is lower than 0.45V and the operating current decreases to 65μA. Using a new variable on-time control method, THD is lower than the conventional CRM boost PFC ICs.

特性 Features

■ Low Total Harmonic Distortion (THD)
■ Precise Adjustable Output Over-Voltage Protection
■ Open-Feedback Protection and Disable Function
■ Zero Current Detector
■ 150μs Internal Start-up Timer
■ MOSFET Over-Current Protection
■ Under-Voltage Lockout with 3.5V Hysteresis
■ Low Start-up (40μA) and Operating Current (1.5mA)
■ Totem Pole Output with High State Clamp
■ +500/-800mA Peak Gate Drive Current
■ 8-pin DIP or 8-pin SOPApplications
■ Adapter
■ Ballast
■ LCD TV, CRT TV
■ SMPS

應(yīng)用 Application

■ Adapter
■ Ballast
■ LCD TV, CRT TV
■ SMPS

簡(jiǎn)介

FAN7530屬于集成電路（IC）的PFC（功率因數(shù)校正）。由制造生產(chǎn)的FAN7530PFC（功率因數(shù)校正）功率因數(shù)校正 (PFC) 是用于調(diào)整交流電路中的電壓和電流之間的相位角，使之趨近于零的半導(dǎo)體器件。不同模式包括平均電流、邊界導(dǎo)通、連續(xù)導(dǎo)通、臨界導(dǎo)通、電流控制式頻率折返、不連續(xù)和不連續(xù)導(dǎo)通，開(kāi)關(guān)頻率從 6 kHz 至 1.7 MHz 可調(diào)。