Fairchild FAN104W平板电脑和智能手机电池充电解决方案
Fairchild公司的FAN104W是高频初级调整的PWM控制器,能提高低功率反激转换器的性能.待机功耗小于30mW,满足能量之星五星标准,突发模式工作电流600uA,具有输出短路保护,输出过压保护(VSOVP),VDD过压保护和超温保护等功能,主要用在智能手机,PAD,PDA和数码相机电池充电器等.本文介绍了FAN104W主要特性,方框图,典型应用电路以及10W平板电脑和智能手机充电器参考设计主要特性,电路图,变压器电路和PCB布局图.
This highly integrated PWM controller, FAN104W, provides several features to enhance the performance of low-power flyback converters. The proprietary topology of FAN104W enables simplified circuit design for battery charger applications. The result is a lowercost,smaller, and lighter charger compared to a conventional design or a linear transformer.To minimize standby power consumption, a proprietary green-mode function provides off-time modulation to linearly decrease PWM frequency under light-load conditions. Green Mode assists the power supply in meeting power conservation requirements. By using FAN104W, a charger can be implemented with few external components and minimized cost.
FAN104W主要特性:
Achieves <30 mW; Energy Star’s 5-Star Level
Proprietary 500 V High-Voltage JFET Startup Reduces Startup Resistor Loss
Low Operation Current in Burst Mode: 600 μA
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