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FSQ0765R



Fairchild Semiconductor 로고
Fairchild Semiconductor
SQ0765R 데이터시트, 핀배열, 회로
June 2008
FSQ0565R, FSQ0765R
Green-Mode Fairchild Power Switch (FPS™) for
Quasi-Resonant Operation - Low EMI and High Efficiency
Features
„ Optimized for Quasi-Resonant Converter (QRC)
www.DataSheet4U.c„omLow EMI through Variable Frequency Control and AVS
(Alternating Valley Switching)
„ 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)
Description
A Quasi-Resonant Converter (QRC) 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 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.
© 2008 Fairchild Semiconductor Corporation
FSQ0565R, FSQ0765R Rev. 1.0.1
www.fairchildsemi.com


SQ0765R 데이터시트, 핀배열, 회로
Ordering Information
Product
Number
PKG.(5)
Maximum Output Power(1)
Operating Current RDS(ON)
230VAC±15%(2)
Temp.
Limit
Max.
Adapter(3)
Open
Frame(4)
85-265VAC
Adapter(3)
Open
Frame(4)
Replaces
Devices
FSQ0565R TO-220F-6L -40 to +85°C 3.0A
2.2Ω
70W
80W
41W
60W
FSCM0565R
FSDM0565RB
FSQ0765R TO-220F-6L -40 to +85°C 3.5A
1.6Ω
80W
90W
48W
70W
FSCM0765R
FSDM0765RB
Notes:
1. The junction temperature can limit the maximum output power.
2. 230VAC or 100/115VAC with doubler.
www.DataSheet4U.c3o.mTypical continuous power in a non-ventilated enclosed adapter measured at 50°C ambient temperature.
4. Maximum practical continuous power in an open-frame design at 50°C ambient.
5. These parts are RoHS compliant.
© 2008 Fairchild Semiconductor Corporation
FSQ0565R, FSQ0765R Rev. 1.0.1
2
www.fairchildsemi.com




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