FAN6921BMR中文资料mWSaver™ Combo Power Factor Correction + QR Flyback Controller, Brown Out Protection数据手册ONSEMI规格书

描述 Description

The highly integrated FAN6921BMR combines Power Factor Correction (PFC) controller and Quasi-Resonant PWM controller. Integration provides cost effect design and allows for fewer external components. For PFC, FAN6921BMR uses a controlled on-time technique to provide a regulated DC output voltage and to perform natural power factor correction. With an innovative THD optimizer, FAN6921BMR can reduce input current distortion at zero-crossing duration to improve THD performance.For PWM, FAN6921BMR provides several functions to enhance the power system performance: valley detection, green-mode operation, high / low line over power compensation. FAN6921MR provides many protection functions as well: secondary-side open-loop and over-current with auto recovery protection, external latch triggering, adjustable over-temperature protection by RT pin and external NTC resistor, internal over-temperature shutdown, VDD pin OVP, and DET pin over-voltage for output OVP, and brown-in / out for AC input voltage UVP.The FAN6921BMR controller is available in a 16-pin small outline package (SOP).

特性 Features

• Integrated PFC and Flyback Controller
• Small foot print design
• Critical Mode PFC Controller
• High PF and Low THD under 300 W
• Zero-Current Detection for PFC Stage
• High PF and Low THD
• Quasi-Resonant Operation for PWM Stage
• High Efficiency
• Internal Minimum tOFF 8µs for QR PWM Stage
• High System Reliability
• Internal 10ms Soft-Start for PWM
• Stable operation
• Brownout Protection
• High System Reliability
• High / Low Line Over-Power Compensation
• High System Reliability
• Auto-Recovery Over-Current Protection
• High System Reliability
• Auto-Recovery Open-Loop Protection
• High System Reliability
• Externally Latch Triggering (RT Pin)
• Design flexibility
• Adjustable Over-Temperature Latched (RT Pin)
• Design flexibility
• VDD Pin and Output Voltage OVP (Latched)
• High System Reliability
• Internal Over-Temperature Shutdown (140°C)
• High System Reliability

应用 Application

• AC-DC Power Supply
• Power Supply

简介

FAN6921BMR属于集成电路（IC）的PFC（功率因数校正）。由制造生产的FAN6921BMRPFC（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。