FL6961集成電路（IC）的PFC（功率因數(shù)校正）規(guī)格書PDF中文資料

FL6961屬于集成電路（IC）的PFC（功率因數(shù)校正）。由安森美半導(dǎo)體公司制造生產(chǎn)的FL6961PFC（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，開關(guān)頻率從 6 kHz 至 1.7 MHz 可調(diào)。

Description

The FL6961 is a general lighting power controller for low- to high-power lumens applications requiring power factor correction. It is designed for flyback or boost converter operating in Boundary Mode.

The FL6961 provides a controlled on-time to regulate the output DC voltage and achieves natural power factor correction (PFC). The maximum on-time of the external switch is programmable to ensure safe operation during AC brownouts. An innovative multi-vector error amplifier provides rapid transient response and precise output voltage clamping. A built-in circuit disables the controller if the output feedback loop is opened. The startup current is lower than 20μA and the operating current is less than 6mA. The supply voltage can be up to 25V, maximizing application flexibility.

Features

■ Boundary Mode PFC Controller

■ Low Input Current THD

■ Controlled On-Time PWM

■ Zero-Current Detection

■ Cycle-by-Cycle Current Limiting

■ Leading-Edge Blanking Instead of RC Filtering

■ Low Startup Current: 10μA Typical

■ Low Operating Current: 4.5mA Typical

■ Feedback Open-Loop Protection

■ Programmable Maximum On-Time (MOT)

■ Output Over-Voltage Clamping Protection

■ Clamped Gate Output Voltage: 16.5V

Applications

■ General LED Lighting

■ Industrial, Commercial and Residential Fixtures

■ Outdoor Lighting: Street, Roadway, Parking, Construction, and Ornamental LED Lighting