FSQ110 Datasheet, PDF (1/12 Pages) Fairchild Semiconductor – Green Mode Fairchild Power Switch (FPS™)

November 2007
FSQ110
Green Mode Fairchild Power Switch (FPS™)
Features
„ Internal Avalanche-Rugged 650V SenseFET
„ Consumes only 0.65W at 230 V_AC & 0.3W Load with
Burst-Mode Operation
„ Precision Fixed Operating Frequency: 100kHz
„ Internal Start-up Circuit and Built-in Soft-Start
„ Pulse-by-Pulse Current Limiting and Auto-Restart
Mode
„ Over-Voltage Protection (OVP), Overload Protection
(OLP), Internal Thermal Shutdown Function (TSD)
„ Under-Voltage Lockout (UVLO)
„ Low Operating Current: 3mA
„ Adjustable Peak Current Limit
Applications
„ SMPS for STB, Low-cost DVD
Related Application Notes
„ AN-4134: Design Guidelines for Off-line Forward
Converters Using Fairchild Power Switch (FPS™)
„ AN-4137: Design Guidelines for Off-line Flyback
Converters Using Fairchild Power Switch (FPS™)
„ AN-4141: Troubleshooting and Design Tips for
Fairchild Power Switch (FPS™) Flyback Applications
„ AN-4147: Design Guidelines for RCD Snubber of
Flyback
Description
The FSQ110 consists of an integrated, current-mode,
Pulse Width Modulator (PWM) and an avalanche-rugged
650V SenseFET. It is specifically designed for high-
performance off-line Switch-Mode Power Supplies
(SMPS) with minimal external components.
The integrated PWM controller features include: a fixed-
frequency generating oscillator, Under-Voltage Lockout
(UVLO) protection, Leading-Edge Blanking (LEB), an
optimized gate turn-on/ turn-off driver, Thermal
Shutdown (TSD) protection, and temperature-
compensated precision current sources for loop
compensation and fault protection circuitry.
Compared to a discrete MOSFET and controller or RCC
switching converter solution, the FSQ110 reduces total
component count, design size, and weight while
increasing efficiency, productivity, and system reliability.
These devices provide a basic platform that is well suited
for the design of cost-effective flyback converters.
8-DIP
Ordering Information
Product Number
FSQ110
Package
8DIP
Marking Code
Q110
BV_DSS
650V
All package are lead free per JEDEC: J-STD-020B standard.
f_OSC
100kHz
R_{DS(ON) (MAX.)}
19Ω
FPS^TM is a trademark of Fairchild Semiconductor Corporation.
© 2007 Fairchild Semiconductor Corporation
FSQ110 Rev. 1.0.0
www.fairchildsemi.com