参数资料
型号: FSQ311L
厂商: Fairchild Semiconductor
文件页数: 1/21页
文件大小: 0K
描述: IC SWITCH FPS LOW EMI HE 8-LSOP
标准包装: 50
输出隔离: 隔离
输入电压: 9 V ~ 20 V
输出电压: 650V
功率(瓦特): 10W
工作温度: -40°C ~ 85°C
封装/外壳: 8-SMD,鸥翼型
供应商设备封装: 8-LSOP
包装: 管件
August 2011
FSQ0365, FSQ0265, FSQ0165, FSQ321
Green Mode Fairchild Power Switch (FPS?)
for Valley Switching Converter – Low EMI and High Efficiency
Features
? Optimized for Valley Switching Converter (VSC)
? Low EMI through Variable Frequency Control and
Inherent Frequency Modulation
? 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
? Protection Functions: Overload Protection (OLP),
Over-Voltage Protection (OVP), Abnormal Over-
Current Protection (AOCP), Internal Thermal
Shutdown (TSD)
? Under-Voltage Lockout (UVLO) with Hysteresis
? Internal Startup Circuit
? Internal High-Voltage SenseFET: 650V
Description
A Valley Switching Converter generally shows lower EMI
and higher power conversion efficiency than a
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 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.
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 for cost-effective
designs of valley switching fly-back converters.
Related Application Notes
? AN-4137 - Design Guidelines for Offline Flyback
Converters Using Fairchild Power Switch (FPS?)
? Built-in Soft-Start: 15ms
Applications
? Power Supplies for DVP Player, DVD Recorder,
Set-Top Box
? Adapter
? Auxiliary Power Supply for PC, LCD TV, and PDP TV
? 2007 Fairchild Semiconductor Corporation
FSQ0365, FSQ0265, FSQ0165, FSQ321 ? Rev. 1.0.6
?
?
?
?
AN-4141 - Troubleshooting and Design Tips for
Fairchild Power Switch (FPS?) Flyback
Applications
AN-4147 - Design Guidelines for RCD Snubber of
Flyback Converters
AN-4150 - Design Guidelines for Flyback
Converters Using FSQ-series Fairchild Power
Switch (FPS?)
AN-4134 - Design Guidelines for Off-line Forward
Converters Using Fairchild Power Switch (FPS?)
www.fairchildsemi.com
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