FS6S Datasheet, PDF (1/13 Pages) Fairchild Semiconductor – Fairchild Power Switch(FPS)

FS6S-SERIES
FS6S0965RT/FS6S1265RB
Fairchild Power Switch(FPS)
www.fairchildsemi.com
Features
• Wide Operating Frequency Range Up to 150Khz
• Lowest Cost SMPS Solution
• Lowest External Components
• Low Start up Current (max:170uA)
• Low Operating Current (max:15mA)
• Internal High Voltage SenseFET
• Built-in Auto Restart Circuit
• Over Voltage Protection (Auto Restart Mode)
• Over Load Protection (Auto Restart Mode)
• Over Current Protection With Latch Mode
• Internal Thermal Protection With Latch Mode
• Pulse By Pulse Over Current Limiting
• Internal Burst Mode Controller for Stand-by Mode
• Under Voltage Lockout With Hysteresis
• External Sync. Terminal
Application
• Monitor SMPS
Description
The Fairchild Power Switch(FPS) product family are
specially designed for an off line SMPS with minimal
external components. The Fairchild Power Switch(FPS)
consists of a high voltage power SenseFET and a current
mode PWM IC. Included PWM controller features the
integrated fixed oscillator, the under voltage lockout, the
optimized gate turn on/turn off driver, the thermal shut
down protection, the over voltage protection, and the
temperature compensated precision current sources for the
loop compensation and the fault protection circuitry.
Compared to a discrete MOSFET and a controller or a RCC
switching converter solution, a Fairchild Power Switch(FPS)
can reduce the total component count, design size, and
weight and at the same time increase efficiency,
productivity, and system reliability. It has a basic platform
well suited for the cost effective monitor power supply.
TO-220F-5L
TO-3P-5L
Internal Block Diagram
SoftStart
& Sync
Vref
5
Vpp=5.8/7.2V
Vfb
Vth=1V
OSC
Vref
Burst mode
controller
Feedback
4
Vcc
Vth=11V/12V
Ifb
Vref
Vcc
2.5R
R
Idelay
Vth=7.5V
Vcc
Vth=30V
OLP
OVP
UVLO Reset
(Vcc=9V)
SQ
R
1
1
1. Drain 2. Gnd 3. VCC 4. FeedBack 5. Sync.
Internal
Bias
Vref
UVLO
S
Q
R
PWM
Vcc
Drain
3
1
Ron
Roff
Vfb Offset
OCL Filter
(130nsec)
TS
(Tj=^D160℃)
Rsenese
Vth=1V
2 ^GND
©2002 Fairchild Semiconductor Corporation
Rev.1.0.6