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Fairchild Semiconductor Electronic Components Datasheet

FSQ110 Datasheet

Green Mode Fairchild Power Switch

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November 2007
FSQ110
Green Mode Fairchild Power Switch (FPS™)
Features
„ Internal Avalanche-Rugged 650V SenseFET
„ Consumes only 0.65W at 230 VAC & 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™)
www.DataSh„eeAt4NU-.4c1om41: 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
BVDSS
650V
All package are lead free per JEDEC: J-STD-020B standard.
fOSC
100kHz
RDS(ON) (MAX.)
19Ω
FPSTM is a trademark of Fairchild Semiconductor Corporation.
© 2007 Fairchild Semiconductor Corporation
FSQ110 Rev. 1.0.0
www.fairchildsemi.com


Fairchild Semiconductor Electronic Components Datasheet

FSQ110 Datasheet

Green Mode Fairchild Power Switch

No Preview Available !

Application Diagram
AC
IN
Vstr Drain
IPK PWM
FB VCC GND
DC
OUT
FSQ0x70RNA Rev. 1.01
Figure 1. Typical Flyback Application
Output Power Table(1)
Product
230VAC ±15%(2)
Adapter(3)
Open Frame(4)
85–265VAC
Adapter(3)
Open Frame(4)
FSQ110
11W
17W
8W
12W
Notes:
1. The maximum output power can be limited by junction temperature.
2. 230 VAC or 100/115 VAC with doubler.
3. Typical continuous power in a non-ventilated enclosed adapter with sufficient drain pattern as a heat sink, at 50°C
ambient.
4. Maximum practical continuous power in an open-frame design with sufficient drain pattern as a heat sink, at 50°C
ambient.
Internal Block Diagram
VCC
2
www.DataSheet4U.com
FB 3
VBURL/VBURH
VCC
VCC
IDELAY
IFB
IPK 4
8V/12V
Normal
2.5R
R
Burst
Vstr
5
ICH
VCC good
Vref
Internal
Bias
OSC
PWM
SQ
RQ
Gate
Driver
LEB
Drain
6,7,8
VSD
VCC
Vovp
TSD
VCC good
SQ
RQ
Figure 2. Internal Block Diagram
1 GND
Soft-Start
FSQ110 Rev. 1.00
© 2007 Fairchild Semiconductor Corporation
FSQ110 Rev. 1.0.0
2
www.fairchildsemi.com


Part Number FSQ110
Description Green Mode Fairchild Power Switch
Maker Fairchild Semiconductor
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