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Fairchild Semiconductor Electronic Components Datasheet

FSQ100 Datasheet

Green Mode Fairchild Power Switch

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March 2011
FSQ100
Green Mode Fairchild Power Switch (FPS™)
Features
Internal Avalanche-Rugged SenseFET
Precision Fixed Operating Frequency: 67KHz
Burst-Mode Operation
Internal Startup Circuit
Pulse-by-Pulse Current Limiting
Over-Voltage Protection (OVP)
Overload Protection (OLP)
Internal Thermal Shutdown Function (TSD)
Auto-Restart Mode
Under-Voltage Lockout (UVLO) with Hysteresis
Built-in Soft-Start
Secondary-Side Regulation
Applications
Charger & Adapter for Mobile Phone, PDA, MP3
Auxiliary Power for White Goods, PC, C-TV, Monitor
Related Application Notes
AN-4137 Design Guidelines for Off-line Flyback
Converters using FPS™
AN-4141 Troubleshooting and Design Tips for
Fairchild Power Switch (FPS™) Flyback Applications
AN-4147 Design Guidelines for RCD Snubber of
Flyback
AN-4134 Design Guidelines for Off-line Forward
Converters using FPS™
AN-4138 Design Considerations for Battery
Charger Using Green Mode Fairchild Power Switch
(FPS™)
Description
The FSQ100 consists of an integrated Pulse Width
Modulator (PWM) and SenseFET, specifically designed
for high-performance, off-line, Switch-Mode Power
Supplies (SMPS) with minimal external components.
This device is an integrated high-voltage power
switching regulator that combines a VDMOS SenseFET
with a voltage mode PWM control block. The integrated
PWM controller features include a fixed 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.
When compared to a discrete MOSFET and controller or
RCC solution, the FSQ100 device reduces total
component count and design size and weight, while
increasing efficiency, productivity, and system reliability.
This device provides a basic platform well suited for
cost-effective flyback converters.
Ordering Information
Product Number
FSQ100
Package
8-DIP
Marking Code
Q100
FPS™ is a trademark of Fairchild Semiconductor Corporation.
© 2007 Fairchild Semiconductor Corporation
FSQ100 Rev. 1.0.2
BVDSS
650V
fOSC
67KHz
RDS(ON)
16
www.fairchildsemi.com


Fairchild Semiconductor Electronic Components Datasheet

FSQ100 Datasheet

Green Mode Fairchild Power Switch

No Preview Available !

Typical Application
AC
IN
VSTR
Drain
PWM
VFB VCC GND
DC
OUT
Figure 1. Typical Flyback Application
Table 1. Output Power Table
Product
FSQ100
230VAC ±15%(2)
13W
Open Frame(1)
85~265VAC
8W
Notes:
1. Maximum practical continuous power in an open-frame design with sufficient drain pattern as a heat sinker, at
50C ambient.
2. 230VAC or 100/115VAC with doubler.
Internal Block Diagram
VCC 2
VFB 3
NC 4
L
UVLO
Idelay Ifb
5µA 400µA
Voltage
Ref
Internal
Bias
9/7V
OSC
Vck
PWM
VBURL/
VBURH
S/S
15ms
BUR ST
OLP
Reset
Min.20V
VSD
OVP
TSD
SQ
R
SQ
R
A/R
VSTR
5
H
Drain
6,7,8
DR IVER
SFET
LEB
ILIM
Vth
Rsense
1
GND
Figure 2. Functional Block Diagram
© 2007 Fairchild Semiconductor Corporation
FSQ100 Rev. 1.0.2
2
www.fairchildsemi.com


Part Number FSQ100
Description Green Mode Fairchild Power Switch
Maker Fairchild Semiconductor
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FSQ100 Datasheet PDF






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