【导读】处处可见的小家电无疑在国内、外都是一个巨大的市场。随着电机市场的变革，小家电的厂家所面临的变化还不止这些，在电源部分的变化对工程师和厂商来说同样是一场革命。本文介绍Fairchild针对小家电应用的完整电源解决方案。
一、Fairchild FSL156 完整电源解决方案
1. FSL156 特点说明
因应世界节能减碳的需求,在FSL156MRIN加入了Advanced Soft Burst Mode降低功耗,较低的操作电流(0.4mA)另外RFF 将降低EMI,内建650V SenseFET及Soft-Start : 15mS , 可应用于家用电器,LCDM…等等产品。FSL156MRIN为DIP-8 , 可应用于输入230VAC : 26W(Adapter) ~ 40W(Open Frame)。输入85 ~ 265Vac : 20W(Adapter) ~ 30W(Adapter)。
2. 方案框图
3. FSL156芯片参数：
Internal Avalanche Rugged SenseFET: 650V
Precision Fixed Operating Frequency: 67kHz
No-Load 150mW at 265VAC without Bias Winding;
25mW with Bias Winding for FSL206MR
30mW with Bias Winding for FSL206MRBN
No Need for Auxiliary Bias Winding
Frequency Modulation for Attenuating EMI
Line Under-Voltage Protection (LUVP)
Pulse-by-Pulse Current Limiting
Low Under-Voltage Lockout (UVLO)
Ultra-Low Operating Current: 300µA
Built-In Soft-Start and Startup Circuit
Various Protections: Overload Protection (OLP),Over-Voltage Protection (OVP), Thermal Shutdown(TSD), Abnormal Over-Current Protection (AOCP),Auto-Restart Mode for All Protections
二、Fairchild FSL306LRN 完整电源解决方案
1. FSL306LRN特点说明
在230Vac 输入时及有Extemal Bias时会展现小于25mW的超低功耗表现,在没有Extemal Bias时小于120mW,更低的操作电流(250uA),可不需要加入AUX Bias Winding以节省PCB空间,应用于Buck : 3W 以内,Flyback : 7W以内。此产品主要应用于家用和工业用的电源产品。
2. 方案框图
3. FSL306LRN 参数：
Built-in Avalanche Rugged SenseFET: 650 V
Fixed Operating Frequency: 50 kHz
No-Load Power Consumption: 25 mW at 230 VAC with External Bias;120 mW at 230 VAC without External Bias
No Need for Auxiliary Bias Winding
Frequency Modulation for Attenuating EMIPulse-by-Pulse Current Limiting
Ultra-Low Operating Current: 250 µA
Built-in Soft-Start and Startup Circuit
Adjustable Peak Current Limit
Built-in Transconductance (Error) Amplifier
Various Protections: Overload Protection (OLP), Over-Voltage Protection (OVP), Feedback Open Loop Protection (FB_OLP), AOCP (Abnormal Over-Current Protection), Thermal Shutdown (TSD)
Fixed 650 ms Restart Time for Safe Auto-Restart Mode of All Protections
4. Demo 照片
