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Fairchild Semiconductor Electronic Components Datasheet

FSQ0565RS Datasheet

Green-Mode Fairchild Power Switch

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December 2009
FSQ0565RS/RQ
Green-Mode Fairchild Power Switch (FPS™) for
Quasi-Resonant Operation - Low EMI and High Efficiency
Features
! Optimized for Quasi-Resonant Converters (QRC)
! Low 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), Internal
Thermal Shutdown (TSD) with Hysteresis,
Output Short Protection (OSP)
! Under-Voltage Lockout (UVLO) with Hysteresis
! Internal Startup 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 Resources
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 Converters
! AN-4148: Audible Noise Reduction Techniques for
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
FSQ0565RS/RQ Rev. 1.0.3
www.DataSheet.in
www.fairchildsemi.com


Fairchild Semiconductor Electronic Components Datasheet

FSQ0565RS Datasheet

Green-Mode Fairchild Power Switch

No Preview Available !

Ordering Information
Product
Number
PKG.(5)
Operating
Temp.
Maximum Output Power(1)
Current RDS(ON)
230VAC±15%(2)
Limit
Max.
Adapter(3)
Open
Frame(4)
85-265VAC
Adapter(3)
Open
Frame(4)
Replaces
Devices
FSQ0565RSWDTU TO-220F-
FSQ0565RQWDTU
6L
-25 to +85°C
2.25A
3.0A
2.2Ω
70W
80W
41W
60W
FSCM0565R
FSDM0565RE
FSQ0565RSLDTU TO-220F-
2.25A
6L -25 to +85°C
FSQ0565RQLDTU (L-Forming)
3.0A
2.2Ω
70W
80W
41W
60W
FSCM0565R
FSDM0565RE
For Fairchild’s definition of Eco Status, please visit: http://www.fairchildsemi.com/company/green/rohs_green.html.
Notes:
1. The junction temperature can limit the maximum output power.
2. 230VAC or 100/115VAC with doubler.
3. Typical 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. Eco Status, RoHS
Application Diagram
AC
IN
VSTR
Drain
Sync
PWM
GND
VFB VCC
VO
FSQ0565RS Rev. 00
Figure 1. Typical Flyback Application
© 2008 Fairchild Semiconductor Corporation
FSQ0565RS/RQ Rev. 1.0.3
www.DataSheet.in
2
www.fairchildsemi.com


Part Number FSQ0565RS
Description Green-Mode Fairchild Power Switch
Maker Fairchild Semiconductor
Total Page 23 Pages
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