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FSQ0565RWDTU PDF预览

FSQ0565RWDTU

更新时间： 2024-11-17 08:13:47
品牌 Logo 应用领域
飞兆/仙童 - FAIRCHILD /
页数 文件大小 规格书
22页 2802K
描述
Switching Regulator/Controller, Current-mode, 75.8kHz Switching Freq-Max, PZIP6

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FSQ0565RWDTU 数据手册

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June 2008  
FSQ0565R, FSQ0765R  
Green-Mode Fairchild Power Switch (FPS™) for  
Quasi-Resonant Operation - Low EMI and High Efficiency  
Features  
Description  
„ Optimized for Quasi-Resonant Converter (QRC)  
A Quasi-Resonant Converter (QRC) generally shows  
lower EMI and higher power conversion efficiency than a  
„ Low EMI through Variable Frequency Control and AVS  
(Alternating Valley Switching)  
conventional hard-switched converter with a fixed  
switching frequency. The FSQ-series is an integrated  
Pulse-Width Modulation (PWM) controller and  
SenseFET specifically designed for quasi-resonant  
operation and Alternating Valley Switching (AVS). The  
PWM controller includes an integrated fixed-frequency  
oscillator, Under-Voltage Lockout (UVLO), Leading-  
Edge Blanking (LEB), optimized gate driver, internal soft-  
start, temperature-compensated precise current sources  
for a loop compensation, and self-protection circuitry.  
Compared with a discrete MOSFET and PWM controller  
solution, the FSQ-series can reduce total cost,  
component count, size, and weight; while simultaneously  
increasing efficiency, productivity, and system reliability.  
This device provides a basic platform for cost-effective  
designs of quasi-resonant switching flyback converters.  
„ 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  
„ Simple Scheme for Sync Voltage Detection  
„ Pulse-by-Pulse Current Limit  
„ Various Protection functions: Overload Protection  
(OLP), Over-Voltage Protection (OVP), Abnormal  
Over-Current Protection (AOCP), Internal Thermal  
Shutdown (TSD) with Hysteresis, Output Short  
Protection (OSP)  
„ Under-Voltage Lockout (UVLO) with Hysteresis  
„ Internal Start-up Circuit  
„ Internal High-Voltage Sense FET (650V)  
„ Built-in Soft-Start (17.5ms)  
Applications  
„ Power Supply for LCD TV and Monitor, VCR, SVR,  
STB, and DVD & DVD Recorder  
„ Adapter  
Related Resourses  
Visit: http://www.fairchildsemi.com/apnotes/ for:  
„ AN-4134: Design Guidelines for Offline Forward  
Converters Using Fairchild Power Switch (FPS™)  
„ AN-4137: Design Guidelines for Offline Flyback  
Converters Using Fairchild Power Switch (FPS™)  
„ AN-4140: Transformer Design Consideration for  
Offline Flyback Converters Using Fairchild Power  
Switch (FPS™)  
„ AN-4141: Troubleshooting and Design Tips for  
Fairchild Power Switch (FPS™) Flyback Applications  
„ AN-4145: Electromagnetic Compatibility for Power  
Converters  
„ AN-4147: Design Guidelines for RCD Snubber of  
Flyback  
„ AN-4148: Audible Noise Reduction Techniques for  
Fairchild Power Switch Fairchild Power Switch(FPS™)  
Applications  
„ AN-4150: Design Guidelines for Flyback Converters  
Using FSQ-Series Fairchild Power Switch (FPS™)  
© 2008 Fairchild Semiconductor Corporation  
FSQ0565R, FSQ0765R Rev. 1.0.1  
www.fairchildsemi.com  
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