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FSQ0165

更新时间： 2024-11-15 00:04:35
品牌 Logo 应用领域
飞兆/仙童 - FAIRCHILD 转换器开关
页数 文件大小 规格书
24页 1562K
描述
Green Mode Fairchild Power Switch(FPS )forValley Switching Converter-Low EMI and High Efficiency

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FSQ0165 数据手册

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September 2007  
FSQ0365, FSQ0265, FSQ0165, FSQ321, FSQ311  
Green Mode Fairchild Power Switch (FPS™) for  
Valley Switching Converter - Low EMI and High Efficiency  
Features  
Description  
„ Optimized for Valley Switching (VSC)  
A Valley Switching Converter generally shows lower EMI  
and higher power conversion efficiency than  
a
„ Low EMI through Variable Frequency Control and  
conventional hard-switched converter with fixed  
a
Inherent Frequency Modulation  
switching frequency. The FSQ-series is an integrated  
Pulse-Width Modulation (PWM) controller and  
SenseFET specifically designed for valley switching  
operation with minimal external components. The PWM  
controller includes an integrated fixed-frequency  
oscillator, Under-Voltage Lockout, Leading Edge  
Blanking (LEB), optimized gate driver, internal soft-start,  
temperature-compensated precise current sources for  
loop compensation, and self-protection circuitry.  
„ High-Efficiency through Minimum Voltage Switching  
„ Narrow Frequency Variation Range over Wide Load  
and Input Voltage Variation  
„ Advanced Burst-Mode Operation for Low Standby  
Power Consumption  
„ Pulse-by-Pulse Current Limit  
„ Various Protection Functions: Overload Protection  
(OLP), Over-Voltage Protection (OVP), Abnormal  
Over-Current Protection (AOCP), Internal Thermal  
Shutdown (TSD)  
Compared with discrete MOSFET and PWM controller  
solutions, the FSQ-series reduces total cost, component  
count, size and weight; while simultaneously increasing  
efficiency, productivity, and system reliability. This device  
provides a basic platform that is well suited for cost-  
effective designs of valley switching fly-back converters.  
„ Under-Voltage Lockout (UVLO) with Hysteresis  
„ Internal Start-up Circuit  
„ Internal High-Voltage SenseFET (650V)  
„ Built-in Soft-Start (15ms)  
Applications  
„ Power Supply for DVP Player and DVD Recorder,  
Set-Top Box  
„ Adapter  
„ Auxiliary Power Supply for PC, LCD TV, and PDP TV  
Related Application Notes  
„ AN-4137, AN-4141, AN-4147, AN-4150 (Flyback)  
„ AN-4134 (Forward)  
FPSTM is a trademark of Fairchild Semiconductor Corporation.  
© 2006 Fairchild Semiconductor Corporation  
www.fairchildsemi.com  
FSQ0365, FSQ0265, FSQ0165, FSQ321, FSQ311 Rev. 1.0.5  
1234567...24

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