FSQ0270RNA_11 Datasheet, PDF (1/17 Pages) Fairchild Semiconductor – Green Mode Fairchild Power Switch (FPS™)

FSQ0170RNA, FSQ0270RNA
Green Mode Fairchild Power Switch (FPS™)
October 2011
Features
 Internal Avalanche Rugged 700V SenseFET
 Consumes only 0.8W at 230 V_AC & 0.5W 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
 Auxiliary Power Supply for PC and Server
 SMPS for VCR, SVR, STB, DVD & DVCD Player,
Printer, Facsimile & Scanner
 Adapter for Camcorder
Description
The FSQ0170RNA, and FSQ0270RNA, consists of an
integrated current mode Pulse Width Modulator (PWM)
and an avalanche-rugged 700V Sense FET. 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 FSQ0170RNA, and
FSQ0270RNA 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, as in PC auxiliary power supplies.
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
 AN-4148: Audible Noise Reduction Techniques for
FPS™ Applications
8-DIP
Ordering Information
Product Number
FSQ0170RNA
FSQ0270RNA
Package
8DIP
8DIP
Marking Code
Q0170RA
Q0270RA
BV_DSS
700V
700V
f_OSC
100kHz
100kHz
R_{DS(ON) (MAX.)}
11
7.2
FPS^TM is a trademark of Fairchild Semiconductor Corporation.
© 2006 Fairchild Semiconductor Corporation
FSQ0170RNA, FSQ0270RNA Rev. 1.0.5
www.fairchildsemi.com